56 MODEL AVIATION
Bob Aberle
Te c h n i c a l R e v i e w
E-mail: [email protected]
JR XP6102 radio
This JR XP6102 RC system as received came with a JR R770
(PCM) receiver and four JR NES-537 servos for $269.99.
The transmitter provides six channel control functions. Digital
trims are employed on four primary control channels.
Technical Highlights:
• Ten model memory positions can be numbered and/or named
for identification purposes.
• Six channel control functions.
• Broadcasts FM-PCM or FM-PPM (regular FM), depending on
receiver you purchase.
• FM signal is on High Side deviation and is not selectable.
• Comes programmed for helicopter and fixed-wing flying.
• Full Ni-Cd batteries and charger supplied. Receiver pack has
1100 mAh capacity!
• Provisions for trainer and DSC cables.
• Full instruction manual available in PDF format on Horizon
Hobby’s Web site.
• Street prices range from $250 to $290.
I’LL BEGIN BY referring you to MA’s “From the Ground Up”
beginners’ series and the January 2004 installment “Advanced RC
Systems,” in which I explained why an RC beginner or a basic sport
flier might benefit from using a more advanced RC system. If you
haven’t read that article, I strongly urge you to do so before you read
this article.
Modern computer-driven RC transmitters have come way down
in price, and at the same time their operation has been greatly
simplified. That being the case, advanced RC systems can meet the
needs of the beginner/sport flier from a price and ease-of-operation
standpoint.
In the pages of MA I’ve discussed advanced RC systems that are
available from Airtronics, Futaba, and Hitec RCD. All of these cost
approximately $200 and are easy to operate. This time I will cover
the newly released JR XP6102 RC system, which is distributed by
Horizon Hobby Inc.
XP6102 System Highlights: This offering features 10 model
memory positions. Most systems in this category only offer four to
six positions. You have the option of purchasing this system with a
Pulse Code Modulation (PCM) receiver that also allows the use of a
fail-safe mode or a standard FM (Pulse Position Modulation, or
PPM) receiver, which will cost less.
The XP6102 comes programmed for fixed-wing aircraft and
helicopter flying. You choose which type from the provided menu
system. There are also special switch functions specifically for the
helicopter enthusiast.
Each model memory position can be identified by number and a
model name that you assign with a maximum of eight characters.
That number and name is displayed on the LCD screen every time
you turn on the power. Digital trim is employed with the position of
each control surface clearly shown on the LCD screen at all times.
This system includes all of the special controls you would expect
on an advanced RC system. There are provisions for a trainer cable
and for a DSC (Direct Servo Connect) cable (both optional, at extra
cost) that allow you to operate your aircraft controls without placing
a radio signal on the air. You can operate the system at your flying
field and not interfere with any other modelers.
The best news is that the JR XP6102 RC system’s street price
ranges from $250 to $290, depending on the options you choose.
The key feature is the 10 model memory positions in a radio that
sells for as little as $250.
09sig2.QXD 6/24/04 9:10 am Page 56
September 2004 57
The fifth channel switch—on top of the left side of the transmitter
case—can be used for retract landing-gear function.
The sixth channel switch—on top of right side of transmitter—
can be used to control flaps or other accessory functions.
The rocker-type switch at the left side of the LCD screen allows
you to scroll up or down through both computer menus.
Input controls to right of LCD screen include “ADJUST,” to
increase or decrease control inputs for various menu items.
Supplied JR airborne components. Top: NES-537 servos. Bottom
L-R: battery pack, receiver, aileron extension cable, switch
harness with charging jack.
L-R: R700 regular FM or PPM and R770 PCM receivers offered
with XP6102 system have seven-channel capability, but only six
channels are used.
The XP6102 includes:
• A six-channel control-function transmitter (capable of broadcasting
FM-PCM or FM-PPM signals).
• Dual control-stick assemblies (with adjustable stick length and
spring tension).
• A 600 mAh Ni-Cd transmitter battery pack.
• A receiver (choice of PCM or regular FM).
• Four NES-537 standard servos.
• A four-cell 1100 mAh Ni-Cd airborne battery pack.
• A dual-output charger (with suitable higher current to charge the
extra capacity battery pack).
• A switch harness.
• An aileron extension cable.
• An assortment of servo-mounting hardware and output arms.
• A frequency-flag set.
• An extremely well-organized, easy-to-read instruction manual.
Systems are available on 72 MHz channels and the 50 and 53
MHz channels that licensed Amateur Radio Service operators use.
You must select the operating band and/or frequency at the time of
your purchase. There is no removable RF (radio frequency) module.
The FM signal that this system broadcasts uses deviation on the
high side, or positive. It is compatible with Airtronics systems, but it
will not operate systems on the low, or negative, side, such as those
manufactured by Futaba and Hitec. Although you can switch the
output between FM-PCM and FM-PPM (which is regular FM), you
cannot select the FM deviation (high or low).
System options include a model with the standard FM-PPM
receiver (R700) and four NES-537 servos, at $249.99. Another
Photos by the author and Mark Lanterman
09sig2.QXD 6/24/04 9:11 am Page 57
modulation choice (PCM or regular FM),
assigning switches to different functions,
copying data, choice of wing type (elevon,
V-tail, or flaperons), and establishing
trainer-cable operation.
The Function Mode menu contains all
control-data input type items such as dual
and expo rate, servo reversing, subtrim,
travel adjustment (on all six channels),
elevator/flap mixing, aileron/rudder mixing,
throttle-cut setting, flap system,
programmed special mixing, fail-safe
control positioning (when using PCM), and
a servo-travel screen that displays the servo
position of each of the (six) channel
functions.
There is not enough space in this article
to cover every detail of this fine RC system.
However, Horizon Hobby and JR Remote
Control have been kind enough to post the
XP6102’s entire 90-page instruction manual
version gives the choice of a PCM receiver
(R770PCM) and four NES-537 servos or the
R700PPM receiver with five NES-537
servos, for $269.99. Still another is a
helicopter version with the R770PCM
receiver and five NES-537 servos, for
$289.99.
XP6102 Transmitter: The four basic flight
controls (aileron, elevator, rudder, and
throttle) are operated by the two dual-axis
control-stick assemblies. A fifth channel
(nonproportional) control, intended for
retractable landing gear, is operated by a
switch located at the top left corner of the
transmitter case.
A sixth channel function (also
nonproportional) is operated by a switch
located at the top right corner of the case.
You could use this switch to deploy flaps,
drop bombs, turn lights on or off, etc.
Although the fifth and sixth channel
functions do not have trim controls, you do
have travel adjustment available for them,
which is a great convenience.
At the left front corner of the transmitter
case is the elevator dual rate switch. To the
right of that is the “TRAINER” operation
push button, which is used with the optional
trainer cable and another JR transmitter
with the same capability. To the right of
that is a helicopter-peculiar control switch
identified as “FLAP/HOVER PITCH.”
At the right front corner of the case is
the aileron dual rate switch. To the left of
that is the “THROTTLE CUT” switch that
will allow you to cut off your fueled engine
without the need to operate the throttle trim
lever. To the left of that switch is another
helicopter-peculiar switch identified as
“ROCKER/HOVER THROTTLE.”
This system actually provides for dual
rate and exponential (expo) rate control on
the aileron, elevator, and rudder control
functions. Individual switches can turn
aileron and elevator dual rate and/or expo
rate on or off. You may also assign the fifth
or sixth channel switches on the top corners
of the case to turn all three control
functions on or off. You cannot turn the
rudder dual rate or expo control on or off
separately.
When the transmitter battery voltage
drops to less than 9.0 volts, an audible
alarm will sound and the words “BATT
LOW” will flash on the LCD screen. The
timer readout on the normal display screen
is not really explained in the text. It appears
to be the transmitter’s elapsed operating
time. It does not allow you to time
individual flights.
As do most JR transmitters, the XP6102
employs a memory-backup Lithium battery.
It is claimed to last approximately five
years. When it needs replaced, a “BACK
ERROR” message will appear on the LCD
screen. At that time you must return the
transmitter to the JR Horizon Service
Center for battery replacement.
LCD Screen and Special Controls: The
LCD screen is large, measuring 21⁄2 inches
wide and 11⁄4 inches high. To the left of the
screen is a scroll button, which has a
rocker-type motion. It will allow you to
move up or down through the menus. Just
below that is the “SELECT” switch that
you use to choose the particular channel
function.
At the right side of the screen is another
rocker-type switch identified as
“ADJUST.” It will let you increase or
decrease control inputs. Just below that is a
push button switch identified as “CLEAR.”
Menu System: Each time you turn the
transmitter power on, a “normal mode
display” will appear on the LCD screen. It
contains the model memory number, the
assigned name of the aircraft for that
memory position, the transmitter voltage
(such as 10.0V), the transmitter “on time”
(an elapsed time that transmitter power is
on), and four bar graphs surrounding the
screen that show the position of the trim for
each primary flight control.
The menu system comprises two parts: a
System Mode and a Function Mode. The
System Mode menu has such items as
selecting the model memory position,
entering the model name, selecting the
model type (aircraft or helicopter),
58 MODEL AVIATION
The normal mode display is shown on the
LCD screen, and it comes up every time
you turn on the transmitter’s power.
Under the System Mode menu, this screen
allows you to name the model assigned to
one of the 10 memory positions.
Under the System Mode menu, you can
select aircraft or helicopter. You can also
access the “DATA RESET” function.
Now we are into the Function Mode menu.
This screen covers the dual rate and
exponential rate control functions.
Lower front of transmitter case has large LCD display screen in the center.
09sig2.QXD 6/24/04 9:12 am Page 58
as a PDF file at
http://horizon.hobbyshopnow.
com/ProdInfo/Files/jrp6644-manual.pdf.
Airborne Components: The JR F770S
(PCM) receiver was supplied with my
review system. This receiver enables you to
use the fail-safe feature with preset controls.
Should your RC signal be lost or interfered
with, the controls will automatically move to
your preset positions.
The JR literature notes that this receiver
weighs 1.5 ounces; in fact, it weighs only
.67 ounce and is small in size, at 17⁄8 inches
long, 15⁄16 inch wide, and 9⁄16 inch thick.
(The FM version is the same size and
weight!)
Each NES-537 servo weighs 1.36 ounces
and has a rated output of 43 ounce-inches of
torque. JR provides a four-cell 1100 mAh
Ni-Cd airborne battery pack. With this
higher capacity, you can easily power five
servos for helicopter and certain aircraft
applications.
The supplied JR NEC-222 battery
charger has a receiver output of 120 mA
current, which is extremely close to the C/10
overnight charge level for this 1100 mAh
pack. That is definitely the right way to go.
The 10 model memory positions and the
ability to name each model, a choice of
PCM or FM, and an easy-to-use menu
system make the JR XP6102 RC system
very special. It is well suited to the RC sport
flier and even the RC beginner, and the
system prices make it affordable. MA
Distributor:
Horizon Hobby Inc.
4104 Fieldstone Rd.
Champaign IL 61822
(877) 504-0233
www.horizonhobby.com
60 MODEL AVIATION
$4825
+ $5 S/H
BMJR Model Products
Box 1210
Sharpes, FL 32959-1210
321-537-1159
www.BMJRModels.com
• Electric Powered Seaplane
Spllash--E • 44" wingspan
DIVERSIFIED SOLUTIONS, LLC.
5932 Chicago Ave. South, Minneapolis, MN 55417
Ph: 1-612-243-1234 Fax: 1-612-243-8950
Email: [email protected] • Web: www.klasskote.com
For Color Chart and Information, Send SASE
Don’t Delay – Order Yours Today!
You Built the Best Model, So Use The Best Paint!
“Superior
Quality”
Epoxy Paint
System
Available in
Colors, Clear
& Primer.
38 Years of Extensive Field
Performance Provides
Outstanding Adhesion & Protection Against Many RC Model Fuels
SCALE FLIGHT MODEL CO.
Repro Rubber Power Kits, Comet, Megow, Burd,
Scientific, Jasco, also available - Campbell,
Diels, Dumas, Florio Flyer, Guillow’s,
Golden Age Repro, Herr, Micro-X, Peck, Sig.
Send $2.00 for Model Airplane Catalog
Penn Valley Hobby Center
837-A W. Main St., Lansdale, PA 19446
www.pennvalleyhobbycenter.com
09sig2.QXD 6/24/04 9:12 am Page 60
Edition: Model Aviation - 2004/09
Page Numbers: 56,57,58,60
Edition: Model Aviation - 2004/09
Page Numbers: 56,57,58,60
56 MODEL AVIATION
Bob Aberle
Te c h n i c a l R e v i e w
E-mail: [email protected]
JR XP6102 radio
This JR XP6102 RC system as received came with a JR R770
(PCM) receiver and four JR NES-537 servos for $269.99.
The transmitter provides six channel control functions. Digital
trims are employed on four primary control channels.
Technical Highlights:
• Ten model memory positions can be numbered and/or named
for identification purposes.
• Six channel control functions.
• Broadcasts FM-PCM or FM-PPM (regular FM), depending on
receiver you purchase.
• FM signal is on High Side deviation and is not selectable.
• Comes programmed for helicopter and fixed-wing flying.
• Full Ni-Cd batteries and charger supplied. Receiver pack has
1100 mAh capacity!
• Provisions for trainer and DSC cables.
• Full instruction manual available in PDF format on Horizon
Hobby’s Web site.
• Street prices range from $250 to $290.
I’LL BEGIN BY referring you to MA’s “From the Ground Up”
beginners’ series and the January 2004 installment “Advanced RC
Systems,” in which I explained why an RC beginner or a basic sport
flier might benefit from using a more advanced RC system. If you
haven’t read that article, I strongly urge you to do so before you read
this article.
Modern computer-driven RC transmitters have come way down
in price, and at the same time their operation has been greatly
simplified. That being the case, advanced RC systems can meet the
needs of the beginner/sport flier from a price and ease-of-operation
standpoint.
In the pages of MA I’ve discussed advanced RC systems that are
available from Airtronics, Futaba, and Hitec RCD. All of these cost
approximately $200 and are easy to operate. This time I will cover
the newly released JR XP6102 RC system, which is distributed by
Horizon Hobby Inc.
XP6102 System Highlights: This offering features 10 model
memory positions. Most systems in this category only offer four to
six positions. You have the option of purchasing this system with a
Pulse Code Modulation (PCM) receiver that also allows the use of a
fail-safe mode or a standard FM (Pulse Position Modulation, or
PPM) receiver, which will cost less.
The XP6102 comes programmed for fixed-wing aircraft and
helicopter flying. You choose which type from the provided menu
system. There are also special switch functions specifically for the
helicopter enthusiast.
Each model memory position can be identified by number and a
model name that you assign with a maximum of eight characters.
That number and name is displayed on the LCD screen every time
you turn on the power. Digital trim is employed with the position of
each control surface clearly shown on the LCD screen at all times.
This system includes all of the special controls you would expect
on an advanced RC system. There are provisions for a trainer cable
and for a DSC (Direct Servo Connect) cable (both optional, at extra
cost) that allow you to operate your aircraft controls without placing
a radio signal on the air. You can operate the system at your flying
field and not interfere with any other modelers.
The best news is that the JR XP6102 RC system’s street price
ranges from $250 to $290, depending on the options you choose.
The key feature is the 10 model memory positions in a radio that
sells for as little as $250.
09sig2.QXD 6/24/04 9:10 am Page 56
September 2004 57
The fifth channel switch—on top of the left side of the transmitter
case—can be used for retract landing-gear function.
The sixth channel switch—on top of right side of transmitter—
can be used to control flaps or other accessory functions.
The rocker-type switch at the left side of the LCD screen allows
you to scroll up or down through both computer menus.
Input controls to right of LCD screen include “ADJUST,” to
increase or decrease control inputs for various menu items.
Supplied JR airborne components. Top: NES-537 servos. Bottom
L-R: battery pack, receiver, aileron extension cable, switch
harness with charging jack.
L-R: R700 regular FM or PPM and R770 PCM receivers offered
with XP6102 system have seven-channel capability, but only six
channels are used.
The XP6102 includes:
• A six-channel control-function transmitter (capable of broadcasting
FM-PCM or FM-PPM signals).
• Dual control-stick assemblies (with adjustable stick length and
spring tension).
• A 600 mAh Ni-Cd transmitter battery pack.
• A receiver (choice of PCM or regular FM).
• Four NES-537 standard servos.
• A four-cell 1100 mAh Ni-Cd airborne battery pack.
• A dual-output charger (with suitable higher current to charge the
extra capacity battery pack).
• A switch harness.
• An aileron extension cable.
• An assortment of servo-mounting hardware and output arms.
• A frequency-flag set.
• An extremely well-organized, easy-to-read instruction manual.
Systems are available on 72 MHz channels and the 50 and 53
MHz channels that licensed Amateur Radio Service operators use.
You must select the operating band and/or frequency at the time of
your purchase. There is no removable RF (radio frequency) module.
The FM signal that this system broadcasts uses deviation on the
high side, or positive. It is compatible with Airtronics systems, but it
will not operate systems on the low, or negative, side, such as those
manufactured by Futaba and Hitec. Although you can switch the
output between FM-PCM and FM-PPM (which is regular FM), you
cannot select the FM deviation (high or low).
System options include a model with the standard FM-PPM
receiver (R700) and four NES-537 servos, at $249.99. Another
Photos by the author and Mark Lanterman
09sig2.QXD 6/24/04 9:11 am Page 57
modulation choice (PCM or regular FM),
assigning switches to different functions,
copying data, choice of wing type (elevon,
V-tail, or flaperons), and establishing
trainer-cable operation.
The Function Mode menu contains all
control-data input type items such as dual
and expo rate, servo reversing, subtrim,
travel adjustment (on all six channels),
elevator/flap mixing, aileron/rudder mixing,
throttle-cut setting, flap system,
programmed special mixing, fail-safe
control positioning (when using PCM), and
a servo-travel screen that displays the servo
position of each of the (six) channel
functions.
There is not enough space in this article
to cover every detail of this fine RC system.
However, Horizon Hobby and JR Remote
Control have been kind enough to post the
XP6102’s entire 90-page instruction manual
version gives the choice of a PCM receiver
(R770PCM) and four NES-537 servos or the
R700PPM receiver with five NES-537
servos, for $269.99. Still another is a
helicopter version with the R770PCM
receiver and five NES-537 servos, for
$289.99.
XP6102 Transmitter: The four basic flight
controls (aileron, elevator, rudder, and
throttle) are operated by the two dual-axis
control-stick assemblies. A fifth channel
(nonproportional) control, intended for
retractable landing gear, is operated by a
switch located at the top left corner of the
transmitter case.
A sixth channel function (also
nonproportional) is operated by a switch
located at the top right corner of the case.
You could use this switch to deploy flaps,
drop bombs, turn lights on or off, etc.
Although the fifth and sixth channel
functions do not have trim controls, you do
have travel adjustment available for them,
which is a great convenience.
At the left front corner of the transmitter
case is the elevator dual rate switch. To the
right of that is the “TRAINER” operation
push button, which is used with the optional
trainer cable and another JR transmitter
with the same capability. To the right of
that is a helicopter-peculiar control switch
identified as “FLAP/HOVER PITCH.”
At the right front corner of the case is
the aileron dual rate switch. To the left of
that is the “THROTTLE CUT” switch that
will allow you to cut off your fueled engine
without the need to operate the throttle trim
lever. To the left of that switch is another
helicopter-peculiar switch identified as
“ROCKER/HOVER THROTTLE.”
This system actually provides for dual
rate and exponential (expo) rate control on
the aileron, elevator, and rudder control
functions. Individual switches can turn
aileron and elevator dual rate and/or expo
rate on or off. You may also assign the fifth
or sixth channel switches on the top corners
of the case to turn all three control
functions on or off. You cannot turn the
rudder dual rate or expo control on or off
separately.
When the transmitter battery voltage
drops to less than 9.0 volts, an audible
alarm will sound and the words “BATT
LOW” will flash on the LCD screen. The
timer readout on the normal display screen
is not really explained in the text. It appears
to be the transmitter’s elapsed operating
time. It does not allow you to time
individual flights.
As do most JR transmitters, the XP6102
employs a memory-backup Lithium battery.
It is claimed to last approximately five
years. When it needs replaced, a “BACK
ERROR” message will appear on the LCD
screen. At that time you must return the
transmitter to the JR Horizon Service
Center for battery replacement.
LCD Screen and Special Controls: The
LCD screen is large, measuring 21⁄2 inches
wide and 11⁄4 inches high. To the left of the
screen is a scroll button, which has a
rocker-type motion. It will allow you to
move up or down through the menus. Just
below that is the “SELECT” switch that
you use to choose the particular channel
function.
At the right side of the screen is another
rocker-type switch identified as
“ADJUST.” It will let you increase or
decrease control inputs. Just below that is a
push button switch identified as “CLEAR.”
Menu System: Each time you turn the
transmitter power on, a “normal mode
display” will appear on the LCD screen. It
contains the model memory number, the
assigned name of the aircraft for that
memory position, the transmitter voltage
(such as 10.0V), the transmitter “on time”
(an elapsed time that transmitter power is
on), and four bar graphs surrounding the
screen that show the position of the trim for
each primary flight control.
The menu system comprises two parts: a
System Mode and a Function Mode. The
System Mode menu has such items as
selecting the model memory position,
entering the model name, selecting the
model type (aircraft or helicopter),
58 MODEL AVIATION
The normal mode display is shown on the
LCD screen, and it comes up every time
you turn on the transmitter’s power.
Under the System Mode menu, this screen
allows you to name the model assigned to
one of the 10 memory positions.
Under the System Mode menu, you can
select aircraft or helicopter. You can also
access the “DATA RESET” function.
Now we are into the Function Mode menu.
This screen covers the dual rate and
exponential rate control functions.
Lower front of transmitter case has large LCD display screen in the center.
09sig2.QXD 6/24/04 9:12 am Page 58
as a PDF file at
http://horizon.hobbyshopnow.
com/ProdInfo/Files/jrp6644-manual.pdf.
Airborne Components: The JR F770S
(PCM) receiver was supplied with my
review system. This receiver enables you to
use the fail-safe feature with preset controls.
Should your RC signal be lost or interfered
with, the controls will automatically move to
your preset positions.
The JR literature notes that this receiver
weighs 1.5 ounces; in fact, it weighs only
.67 ounce and is small in size, at 17⁄8 inches
long, 15⁄16 inch wide, and 9⁄16 inch thick.
(The FM version is the same size and
weight!)
Each NES-537 servo weighs 1.36 ounces
and has a rated output of 43 ounce-inches of
torque. JR provides a four-cell 1100 mAh
Ni-Cd airborne battery pack. With this
higher capacity, you can easily power five
servos for helicopter and certain aircraft
applications.
The supplied JR NEC-222 battery
charger has a receiver output of 120 mA
current, which is extremely close to the C/10
overnight charge level for this 1100 mAh
pack. That is definitely the right way to go.
The 10 model memory positions and the
ability to name each model, a choice of
PCM or FM, and an easy-to-use menu
system make the JR XP6102 RC system
very special. It is well suited to the RC sport
flier and even the RC beginner, and the
system prices make it affordable. MA
Distributor:
Horizon Hobby Inc.
4104 Fieldstone Rd.
Champaign IL 61822
(877) 504-0233
www.horizonhobby.com
60 MODEL AVIATION
$4825
+ $5 S/H
BMJR Model Products
Box 1210
Sharpes, FL 32959-1210
321-537-1159
www.BMJRModels.com
• Electric Powered Seaplane
Spllash--E • 44" wingspan
DIVERSIFIED SOLUTIONS, LLC.
5932 Chicago Ave. South, Minneapolis, MN 55417
Ph: 1-612-243-1234 Fax: 1-612-243-8950
Email: [email protected] • Web: www.klasskote.com
For Color Chart and Information, Send SASE
Don’t Delay – Order Yours Today!
You Built the Best Model, So Use The Best Paint!
“Superior
Quality”
Epoxy Paint
System
Available in
Colors, Clear
& Primer.
38 Years of Extensive Field
Performance Provides
Outstanding Adhesion & Protection Against Many RC Model Fuels
SCALE FLIGHT MODEL CO.
Repro Rubber Power Kits, Comet, Megow, Burd,
Scientific, Jasco, also available - Campbell,
Diels, Dumas, Florio Flyer, Guillow’s,
Golden Age Repro, Herr, Micro-X, Peck, Sig.
Send $2.00 for Model Airplane Catalog
Penn Valley Hobby Center
837-A W. Main St., Lansdale, PA 19446
www.pennvalleyhobbycenter.com
09sig2.QXD 6/24/04 9:12 am Page 60
Edition: Model Aviation - 2004/09
Page Numbers: 56,57,58,60
56 MODEL AVIATION
Bob Aberle
Te c h n i c a l R e v i e w
E-mail: [email protected]
JR XP6102 radio
This JR XP6102 RC system as received came with a JR R770
(PCM) receiver and four JR NES-537 servos for $269.99.
The transmitter provides six channel control functions. Digital
trims are employed on four primary control channels.
Technical Highlights:
• Ten model memory positions can be numbered and/or named
for identification purposes.
• Six channel control functions.
• Broadcasts FM-PCM or FM-PPM (regular FM), depending on
receiver you purchase.
• FM signal is on High Side deviation and is not selectable.
• Comes programmed for helicopter and fixed-wing flying.
• Full Ni-Cd batteries and charger supplied. Receiver pack has
1100 mAh capacity!
• Provisions for trainer and DSC cables.
• Full instruction manual available in PDF format on Horizon
Hobby’s Web site.
• Street prices range from $250 to $290.
I’LL BEGIN BY referring you to MA’s “From the Ground Up”
beginners’ series and the January 2004 installment “Advanced RC
Systems,” in which I explained why an RC beginner or a basic sport
flier might benefit from using a more advanced RC system. If you
haven’t read that article, I strongly urge you to do so before you read
this article.
Modern computer-driven RC transmitters have come way down
in price, and at the same time their operation has been greatly
simplified. That being the case, advanced RC systems can meet the
needs of the beginner/sport flier from a price and ease-of-operation
standpoint.
In the pages of MA I’ve discussed advanced RC systems that are
available from Airtronics, Futaba, and Hitec RCD. All of these cost
approximately $200 and are easy to operate. This time I will cover
the newly released JR XP6102 RC system, which is distributed by
Horizon Hobby Inc.
XP6102 System Highlights: This offering features 10 model
memory positions. Most systems in this category only offer four to
six positions. You have the option of purchasing this system with a
Pulse Code Modulation (PCM) receiver that also allows the use of a
fail-safe mode or a standard FM (Pulse Position Modulation, or
PPM) receiver, which will cost less.
The XP6102 comes programmed for fixed-wing aircraft and
helicopter flying. You choose which type from the provided menu
system. There are also special switch functions specifically for the
helicopter enthusiast.
Each model memory position can be identified by number and a
model name that you assign with a maximum of eight characters.
That number and name is displayed on the LCD screen every time
you turn on the power. Digital trim is employed with the position of
each control surface clearly shown on the LCD screen at all times.
This system includes all of the special controls you would expect
on an advanced RC system. There are provisions for a trainer cable
and for a DSC (Direct Servo Connect) cable (both optional, at extra
cost) that allow you to operate your aircraft controls without placing
a radio signal on the air. You can operate the system at your flying
field and not interfere with any other modelers.
The best news is that the JR XP6102 RC system’s street price
ranges from $250 to $290, depending on the options you choose.
The key feature is the 10 model memory positions in a radio that
sells for as little as $250.
09sig2.QXD 6/24/04 9:10 am Page 56
September 2004 57
The fifth channel switch—on top of the left side of the transmitter
case—can be used for retract landing-gear function.
The sixth channel switch—on top of right side of transmitter—
can be used to control flaps or other accessory functions.
The rocker-type switch at the left side of the LCD screen allows
you to scroll up or down through both computer menus.
Input controls to right of LCD screen include “ADJUST,” to
increase or decrease control inputs for various menu items.
Supplied JR airborne components. Top: NES-537 servos. Bottom
L-R: battery pack, receiver, aileron extension cable, switch
harness with charging jack.
L-R: R700 regular FM or PPM and R770 PCM receivers offered
with XP6102 system have seven-channel capability, but only six
channels are used.
The XP6102 includes:
• A six-channel control-function transmitter (capable of broadcasting
FM-PCM or FM-PPM signals).
• Dual control-stick assemblies (with adjustable stick length and
spring tension).
• A 600 mAh Ni-Cd transmitter battery pack.
• A receiver (choice of PCM or regular FM).
• Four NES-537 standard servos.
• A four-cell 1100 mAh Ni-Cd airborne battery pack.
• A dual-output charger (with suitable higher current to charge the
extra capacity battery pack).
• A switch harness.
• An aileron extension cable.
• An assortment of servo-mounting hardware and output arms.
• A frequency-flag set.
• An extremely well-organized, easy-to-read instruction manual.
Systems are available on 72 MHz channels and the 50 and 53
MHz channels that licensed Amateur Radio Service operators use.
You must select the operating band and/or frequency at the time of
your purchase. There is no removable RF (radio frequency) module.
The FM signal that this system broadcasts uses deviation on the
high side, or positive. It is compatible with Airtronics systems, but it
will not operate systems on the low, or negative, side, such as those
manufactured by Futaba and Hitec. Although you can switch the
output between FM-PCM and FM-PPM (which is regular FM), you
cannot select the FM deviation (high or low).
System options include a model with the standard FM-PPM
receiver (R700) and four NES-537 servos, at $249.99. Another
Photos by the author and Mark Lanterman
09sig2.QXD 6/24/04 9:11 am Page 57
modulation choice (PCM or regular FM),
assigning switches to different functions,
copying data, choice of wing type (elevon,
V-tail, or flaperons), and establishing
trainer-cable operation.
The Function Mode menu contains all
control-data input type items such as dual
and expo rate, servo reversing, subtrim,
travel adjustment (on all six channels),
elevator/flap mixing, aileron/rudder mixing,
throttle-cut setting, flap system,
programmed special mixing, fail-safe
control positioning (when using PCM), and
a servo-travel screen that displays the servo
position of each of the (six) channel
functions.
There is not enough space in this article
to cover every detail of this fine RC system.
However, Horizon Hobby and JR Remote
Control have been kind enough to post the
XP6102’s entire 90-page instruction manual
version gives the choice of a PCM receiver
(R770PCM) and four NES-537 servos or the
R700PPM receiver with five NES-537
servos, for $269.99. Still another is a
helicopter version with the R770PCM
receiver and five NES-537 servos, for
$289.99.
XP6102 Transmitter: The four basic flight
controls (aileron, elevator, rudder, and
throttle) are operated by the two dual-axis
control-stick assemblies. A fifth channel
(nonproportional) control, intended for
retractable landing gear, is operated by a
switch located at the top left corner of the
transmitter case.
A sixth channel function (also
nonproportional) is operated by a switch
located at the top right corner of the case.
You could use this switch to deploy flaps,
drop bombs, turn lights on or off, etc.
Although the fifth and sixth channel
functions do not have trim controls, you do
have travel adjustment available for them,
which is a great convenience.
At the left front corner of the transmitter
case is the elevator dual rate switch. To the
right of that is the “TRAINER” operation
push button, which is used with the optional
trainer cable and another JR transmitter
with the same capability. To the right of
that is a helicopter-peculiar control switch
identified as “FLAP/HOVER PITCH.”
At the right front corner of the case is
the aileron dual rate switch. To the left of
that is the “THROTTLE CUT” switch that
will allow you to cut off your fueled engine
without the need to operate the throttle trim
lever. To the left of that switch is another
helicopter-peculiar switch identified as
“ROCKER/HOVER THROTTLE.”
This system actually provides for dual
rate and exponential (expo) rate control on
the aileron, elevator, and rudder control
functions. Individual switches can turn
aileron and elevator dual rate and/or expo
rate on or off. You may also assign the fifth
or sixth channel switches on the top corners
of the case to turn all three control
functions on or off. You cannot turn the
rudder dual rate or expo control on or off
separately.
When the transmitter battery voltage
drops to less than 9.0 volts, an audible
alarm will sound and the words “BATT
LOW” will flash on the LCD screen. The
timer readout on the normal display screen
is not really explained in the text. It appears
to be the transmitter’s elapsed operating
time. It does not allow you to time
individual flights.
As do most JR transmitters, the XP6102
employs a memory-backup Lithium battery.
It is claimed to last approximately five
years. When it needs replaced, a “BACK
ERROR” message will appear on the LCD
screen. At that time you must return the
transmitter to the JR Horizon Service
Center for battery replacement.
LCD Screen and Special Controls: The
LCD screen is large, measuring 21⁄2 inches
wide and 11⁄4 inches high. To the left of the
screen is a scroll button, which has a
rocker-type motion. It will allow you to
move up or down through the menus. Just
below that is the “SELECT” switch that
you use to choose the particular channel
function.
At the right side of the screen is another
rocker-type switch identified as
“ADJUST.” It will let you increase or
decrease control inputs. Just below that is a
push button switch identified as “CLEAR.”
Menu System: Each time you turn the
transmitter power on, a “normal mode
display” will appear on the LCD screen. It
contains the model memory number, the
assigned name of the aircraft for that
memory position, the transmitter voltage
(such as 10.0V), the transmitter “on time”
(an elapsed time that transmitter power is
on), and four bar graphs surrounding the
screen that show the position of the trim for
each primary flight control.
The menu system comprises two parts: a
System Mode and a Function Mode. The
System Mode menu has such items as
selecting the model memory position,
entering the model name, selecting the
model type (aircraft or helicopter),
58 MODEL AVIATION
The normal mode display is shown on the
LCD screen, and it comes up every time
you turn on the transmitter’s power.
Under the System Mode menu, this screen
allows you to name the model assigned to
one of the 10 memory positions.
Under the System Mode menu, you can
select aircraft or helicopter. You can also
access the “DATA RESET” function.
Now we are into the Function Mode menu.
This screen covers the dual rate and
exponential rate control functions.
Lower front of transmitter case has large LCD display screen in the center.
09sig2.QXD 6/24/04 9:12 am Page 58
as a PDF file at
http://horizon.hobbyshopnow.
com/ProdInfo/Files/jrp6644-manual.pdf.
Airborne Components: The JR F770S
(PCM) receiver was supplied with my
review system. This receiver enables you to
use the fail-safe feature with preset controls.
Should your RC signal be lost or interfered
with, the controls will automatically move to
your preset positions.
The JR literature notes that this receiver
weighs 1.5 ounces; in fact, it weighs only
.67 ounce and is small in size, at 17⁄8 inches
long, 15⁄16 inch wide, and 9⁄16 inch thick.
(The FM version is the same size and
weight!)
Each NES-537 servo weighs 1.36 ounces
and has a rated output of 43 ounce-inches of
torque. JR provides a four-cell 1100 mAh
Ni-Cd airborne battery pack. With this
higher capacity, you can easily power five
servos for helicopter and certain aircraft
applications.
The supplied JR NEC-222 battery
charger has a receiver output of 120 mA
current, which is extremely close to the C/10
overnight charge level for this 1100 mAh
pack. That is definitely the right way to go.
The 10 model memory positions and the
ability to name each model, a choice of
PCM or FM, and an easy-to-use menu
system make the JR XP6102 RC system
very special. It is well suited to the RC sport
flier and even the RC beginner, and the
system prices make it affordable. MA
Distributor:
Horizon Hobby Inc.
4104 Fieldstone Rd.
Champaign IL 61822
(877) 504-0233
www.horizonhobby.com
60 MODEL AVIATION
$4825
+ $5 S/H
BMJR Model Products
Box 1210
Sharpes, FL 32959-1210
321-537-1159
www.BMJRModels.com
• Electric Powered Seaplane
Spllash--E • 44" wingspan
DIVERSIFIED SOLUTIONS, LLC.
5932 Chicago Ave. South, Minneapolis, MN 55417
Ph: 1-612-243-1234 Fax: 1-612-243-8950
Email: [email protected] • Web: www.klasskote.com
For Color Chart and Information, Send SASE
Don’t Delay – Order Yours Today!
You Built the Best Model, So Use The Best Paint!
“Superior
Quality”
Epoxy Paint
System
Available in
Colors, Clear
& Primer.
38 Years of Extensive Field
Performance Provides
Outstanding Adhesion & Protection Against Many RC Model Fuels
SCALE FLIGHT MODEL CO.
Repro Rubber Power Kits, Comet, Megow, Burd,
Scientific, Jasco, also available - Campbell,
Diels, Dumas, Florio Flyer, Guillow’s,
Golden Age Repro, Herr, Micro-X, Peck, Sig.
Send $2.00 for Model Airplane Catalog
Penn Valley Hobby Center
837-A W. Main St., Lansdale, PA 19446
www.pennvalleyhobbycenter.com
09sig2.QXD 6/24/04 9:12 am Page 60
Edition: Model Aviation - 2004/09
Page Numbers: 56,57,58,60
56 MODEL AVIATION
Bob Aberle
Te c h n i c a l R e v i e w
E-mail: [email protected]
JR XP6102 radio
This JR XP6102 RC system as received came with a JR R770
(PCM) receiver and four JR NES-537 servos for $269.99.
The transmitter provides six channel control functions. Digital
trims are employed on four primary control channels.
Technical Highlights:
• Ten model memory positions can be numbered and/or named
for identification purposes.
• Six channel control functions.
• Broadcasts FM-PCM or FM-PPM (regular FM), depending on
receiver you purchase.
• FM signal is on High Side deviation and is not selectable.
• Comes programmed for helicopter and fixed-wing flying.
• Full Ni-Cd batteries and charger supplied. Receiver pack has
1100 mAh capacity!
• Provisions for trainer and DSC cables.
• Full instruction manual available in PDF format on Horizon
Hobby’s Web site.
• Street prices range from $250 to $290.
I’LL BEGIN BY referring you to MA’s “From the Ground Up”
beginners’ series and the January 2004 installment “Advanced RC
Systems,” in which I explained why an RC beginner or a basic sport
flier might benefit from using a more advanced RC system. If you
haven’t read that article, I strongly urge you to do so before you read
this article.
Modern computer-driven RC transmitters have come way down
in price, and at the same time their operation has been greatly
simplified. That being the case, advanced RC systems can meet the
needs of the beginner/sport flier from a price and ease-of-operation
standpoint.
In the pages of MA I’ve discussed advanced RC systems that are
available from Airtronics, Futaba, and Hitec RCD. All of these cost
approximately $200 and are easy to operate. This time I will cover
the newly released JR XP6102 RC system, which is distributed by
Horizon Hobby Inc.
XP6102 System Highlights: This offering features 10 model
memory positions. Most systems in this category only offer four to
six positions. You have the option of purchasing this system with a
Pulse Code Modulation (PCM) receiver that also allows the use of a
fail-safe mode or a standard FM (Pulse Position Modulation, or
PPM) receiver, which will cost less.
The XP6102 comes programmed for fixed-wing aircraft and
helicopter flying. You choose which type from the provided menu
system. There are also special switch functions specifically for the
helicopter enthusiast.
Each model memory position can be identified by number and a
model name that you assign with a maximum of eight characters.
That number and name is displayed on the LCD screen every time
you turn on the power. Digital trim is employed with the position of
each control surface clearly shown on the LCD screen at all times.
This system includes all of the special controls you would expect
on an advanced RC system. There are provisions for a trainer cable
and for a DSC (Direct Servo Connect) cable (both optional, at extra
cost) that allow you to operate your aircraft controls without placing
a radio signal on the air. You can operate the system at your flying
field and not interfere with any other modelers.
The best news is that the JR XP6102 RC system’s street price
ranges from $250 to $290, depending on the options you choose.
The key feature is the 10 model memory positions in a radio that
sells for as little as $250.
09sig2.QXD 6/24/04 9:10 am Page 56
September 2004 57
The fifth channel switch—on top of the left side of the transmitter
case—can be used for retract landing-gear function.
The sixth channel switch—on top of right side of transmitter—
can be used to control flaps or other accessory functions.
The rocker-type switch at the left side of the LCD screen allows
you to scroll up or down through both computer menus.
Input controls to right of LCD screen include “ADJUST,” to
increase or decrease control inputs for various menu items.
Supplied JR airborne components. Top: NES-537 servos. Bottom
L-R: battery pack, receiver, aileron extension cable, switch
harness with charging jack.
L-R: R700 regular FM or PPM and R770 PCM receivers offered
with XP6102 system have seven-channel capability, but only six
channels are used.
The XP6102 includes:
• A six-channel control-function transmitter (capable of broadcasting
FM-PCM or FM-PPM signals).
• Dual control-stick assemblies (with adjustable stick length and
spring tension).
• A 600 mAh Ni-Cd transmitter battery pack.
• A receiver (choice of PCM or regular FM).
• Four NES-537 standard servos.
• A four-cell 1100 mAh Ni-Cd airborne battery pack.
• A dual-output charger (with suitable higher current to charge the
extra capacity battery pack).
• A switch harness.
• An aileron extension cable.
• An assortment of servo-mounting hardware and output arms.
• A frequency-flag set.
• An extremely well-organized, easy-to-read instruction manual.
Systems are available on 72 MHz channels and the 50 and 53
MHz channels that licensed Amateur Radio Service operators use.
You must select the operating band and/or frequency at the time of
your purchase. There is no removable RF (radio frequency) module.
The FM signal that this system broadcasts uses deviation on the
high side, or positive. It is compatible with Airtronics systems, but it
will not operate systems on the low, or negative, side, such as those
manufactured by Futaba and Hitec. Although you can switch the
output between FM-PCM and FM-PPM (which is regular FM), you
cannot select the FM deviation (high or low).
System options include a model with the standard FM-PPM
receiver (R700) and four NES-537 servos, at $249.99. Another
Photos by the author and Mark Lanterman
09sig2.QXD 6/24/04 9:11 am Page 57
modulation choice (PCM or regular FM),
assigning switches to different functions,
copying data, choice of wing type (elevon,
V-tail, or flaperons), and establishing
trainer-cable operation.
The Function Mode menu contains all
control-data input type items such as dual
and expo rate, servo reversing, subtrim,
travel adjustment (on all six channels),
elevator/flap mixing, aileron/rudder mixing,
throttle-cut setting, flap system,
programmed special mixing, fail-safe
control positioning (when using PCM), and
a servo-travel screen that displays the servo
position of each of the (six) channel
functions.
There is not enough space in this article
to cover every detail of this fine RC system.
However, Horizon Hobby and JR Remote
Control have been kind enough to post the
XP6102’s entire 90-page instruction manual
version gives the choice of a PCM receiver
(R770PCM) and four NES-537 servos or the
R700PPM receiver with five NES-537
servos, for $269.99. Still another is a
helicopter version with the R770PCM
receiver and five NES-537 servos, for
$289.99.
XP6102 Transmitter: The four basic flight
controls (aileron, elevator, rudder, and
throttle) are operated by the two dual-axis
control-stick assemblies. A fifth channel
(nonproportional) control, intended for
retractable landing gear, is operated by a
switch located at the top left corner of the
transmitter case.
A sixth channel function (also
nonproportional) is operated by a switch
located at the top right corner of the case.
You could use this switch to deploy flaps,
drop bombs, turn lights on or off, etc.
Although the fifth and sixth channel
functions do not have trim controls, you do
have travel adjustment available for them,
which is a great convenience.
At the left front corner of the transmitter
case is the elevator dual rate switch. To the
right of that is the “TRAINER” operation
push button, which is used with the optional
trainer cable and another JR transmitter
with the same capability. To the right of
that is a helicopter-peculiar control switch
identified as “FLAP/HOVER PITCH.”
At the right front corner of the case is
the aileron dual rate switch. To the left of
that is the “THROTTLE CUT” switch that
will allow you to cut off your fueled engine
without the need to operate the throttle trim
lever. To the left of that switch is another
helicopter-peculiar switch identified as
“ROCKER/HOVER THROTTLE.”
This system actually provides for dual
rate and exponential (expo) rate control on
the aileron, elevator, and rudder control
functions. Individual switches can turn
aileron and elevator dual rate and/or expo
rate on or off. You may also assign the fifth
or sixth channel switches on the top corners
of the case to turn all three control
functions on or off. You cannot turn the
rudder dual rate or expo control on or off
separately.
When the transmitter battery voltage
drops to less than 9.0 volts, an audible
alarm will sound and the words “BATT
LOW” will flash on the LCD screen. The
timer readout on the normal display screen
is not really explained in the text. It appears
to be the transmitter’s elapsed operating
time. It does not allow you to time
individual flights.
As do most JR transmitters, the XP6102
employs a memory-backup Lithium battery.
It is claimed to last approximately five
years. When it needs replaced, a “BACK
ERROR” message will appear on the LCD
screen. At that time you must return the
transmitter to the JR Horizon Service
Center for battery replacement.
LCD Screen and Special Controls: The
LCD screen is large, measuring 21⁄2 inches
wide and 11⁄4 inches high. To the left of the
screen is a scroll button, which has a
rocker-type motion. It will allow you to
move up or down through the menus. Just
below that is the “SELECT” switch that
you use to choose the particular channel
function.
At the right side of the screen is another
rocker-type switch identified as
“ADJUST.” It will let you increase or
decrease control inputs. Just below that is a
push button switch identified as “CLEAR.”
Menu System: Each time you turn the
transmitter power on, a “normal mode
display” will appear on the LCD screen. It
contains the model memory number, the
assigned name of the aircraft for that
memory position, the transmitter voltage
(such as 10.0V), the transmitter “on time”
(an elapsed time that transmitter power is
on), and four bar graphs surrounding the
screen that show the position of the trim for
each primary flight control.
The menu system comprises two parts: a
System Mode and a Function Mode. The
System Mode menu has such items as
selecting the model memory position,
entering the model name, selecting the
model type (aircraft or helicopter),
58 MODEL AVIATION
The normal mode display is shown on the
LCD screen, and it comes up every time
you turn on the transmitter’s power.
Under the System Mode menu, this screen
allows you to name the model assigned to
one of the 10 memory positions.
Under the System Mode menu, you can
select aircraft or helicopter. You can also
access the “DATA RESET” function.
Now we are into the Function Mode menu.
This screen covers the dual rate and
exponential rate control functions.
Lower front of transmitter case has large LCD display screen in the center.
09sig2.QXD 6/24/04 9:12 am Page 58
as a PDF file at
http://horizon.hobbyshopnow.
com/ProdInfo/Files/jrp6644-manual.pdf.
Airborne Components: The JR F770S
(PCM) receiver was supplied with my
review system. This receiver enables you to
use the fail-safe feature with preset controls.
Should your RC signal be lost or interfered
with, the controls will automatically move to
your preset positions.
The JR literature notes that this receiver
weighs 1.5 ounces; in fact, it weighs only
.67 ounce and is small in size, at 17⁄8 inches
long, 15⁄16 inch wide, and 9⁄16 inch thick.
(The FM version is the same size and
weight!)
Each NES-537 servo weighs 1.36 ounces
and has a rated output of 43 ounce-inches of
torque. JR provides a four-cell 1100 mAh
Ni-Cd airborne battery pack. With this
higher capacity, you can easily power five
servos for helicopter and certain aircraft
applications.
The supplied JR NEC-222 battery
charger has a receiver output of 120 mA
current, which is extremely close to the C/10
overnight charge level for this 1100 mAh
pack. That is definitely the right way to go.
The 10 model memory positions and the
ability to name each model, a choice of
PCM or FM, and an easy-to-use menu
system make the JR XP6102 RC system
very special. It is well suited to the RC sport
flier and even the RC beginner, and the
system prices make it affordable. MA
Distributor:
Horizon Hobby Inc.
4104 Fieldstone Rd.
Champaign IL 61822
(877) 504-0233
www.horizonhobby.com
60 MODEL AVIATION
$4825
+ $5 S/H
BMJR Model Products
Box 1210
Sharpes, FL 32959-1210
321-537-1159
www.BMJRModels.com
• Electric Powered Seaplane
Spllash--E • 44" wingspan
DIVERSIFIED SOLUTIONS, LLC.
5932 Chicago Ave. South, Minneapolis, MN 55417
Ph: 1-612-243-1234 Fax: 1-612-243-8950
Email: [email protected] • Web: www.klasskote.com
For Color Chart and Information, Send SASE
Don’t Delay – Order Yours Today!
You Built the Best Model, So Use The Best Paint!
“Superior
Quality”
Epoxy Paint
System
Available in
Colors, Clear
& Primer.
38 Years of Extensive Field
Performance Provides
Outstanding Adhesion & Protection Against Many RC Model Fuels
SCALE FLIGHT MODEL CO.
Repro Rubber Power Kits, Comet, Megow, Burd,
Scientific, Jasco, also available - Campbell,
Diels, Dumas, Florio Flyer, Guillow’s,
Golden Age Repro, Herr, Micro-X, Peck, Sig.
Send $2.00 for Model Airplane Catalog
Penn Valley Hobby Center
837-A W. Main St., Lansdale, PA 19446
www.pennvalleyhobbycenter.com
09sig2.QXD 6/24/04 9:12 am Page 60