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JR 6102

  • Posted: 2004-09-11

JR XP6102: A multifunction 6-channel programmable radio with a sport-flyer price!

Have you ever wanted a full-feature programmable radio but just didn't want to commit to a 9- or 10-channel top-of-the-line system? High-end systems may be fine for dedicated, full-fledged competitors, but they are a big investment for average sport fliers who just want more versatility.

Enter JR: distributed by Horizon Hobby, the new 6-channel programmable JR XP6102 radio has a 10-model memory and features programming for airplanes and helis at a very attractive sport-flyer price tag. JR has taken the extra step to gather many great functions that, until now, haven't been available in a 6-channel RC system. Let's see exactly what the XP6102 has to offer.

FEATURES
With its wide-screen display, 10-model memory and user-assigned switch placements for specific functions, the JR XP6102 is a serious radio for the price. The transmitter fits nicely in your hands, and its user-friendly layout positions the dual rate, flap and landing gear switches in the upper right corner. The two inwardslanting Scroll and Adjust thumb switches located on either side of the main LCD screen are a departure from the several small adjustment buttons found on JR's previous radios. They give radio programming an entirely new feel; they're easier and more comfortable to use.

All data entry and menu navigating is handled by these four thumb switches. The positions of the switches make programming very easy.

The two main control sticks, as usual, are adjustable in length, and the rudder, throttle, aileron and elevator tension can be fine-tuned. The XP6102 also includes direct servo control (DSC), so you can adjust your model at the field without transmitting a signal. The radio frequency is selectable for either pulse-code modulation (PCM) or pulse-position modulation (PPM)-often referred to as standard FM.

The standard system components include the transmitter, an R770 (PCM) or R700 (FM) receiver, an airborne 1100mAh Ni-Cd battery pack and charger, NES 537 servos (four for airplane and five for heli), a 12-inch aileron extension, a standard switch harness with a charging jack, servo mounting hardware, a hex-wrench and the instruction manual. For those who prefer it, a baseloaded transmitter antenna is also available. Features of the XP6102 include:

• PCM throttle fail-safe. The radio comes set with the throttle programmed to go to idle if the signal is lost.
• Servo-travel display. This helps to sort out the various servo positions and is very helpful when checking out your program mixes, functions and proper direction and control throw settings.
• Assignable switch placement. Start with the preset positions, and then adjust them to your liking.
• On-screen offset mix point adjust. You can dial in the offset points for various channel-mixing adjustments while looking at the graphic display.
• 5-point graphic display. This screen in the heli system allows simple pitch- and throttle-curve adjustments.

The owners' manual is very well illustrated, and it includes all the programming information needed for the airplane and heli systems. The flow charts for the System and Function modes are shown (pages 19 and 31, respectively), and each category is highlighted with page numbers to direct you to more detailed explanations of the settings and adjustments.

INPUT AND DISPLAY

On the upper left corner are the elevator dual rate (face), gear switch (top), the trainer button and the flap/hover pitch lever.
The upper right corner is home to the aileron dual rate (face), flap switch (top), throttle-cut button and rocker/hover throttle lever.

The Scroll key allows you to move through the various program functions while the Adjust key increases and decreases selected function values; the Select key is used to advance the channel and select function. When you turn on the transmitter, the Normal mode display includes the model number, model type, model name, modulation type, how long the transmitter has been on and graphic representations of the digital throttle, rudder, aileron and elevator-trim settings. If you press the Scroll Down function and the Select keys and then turn on the radio, you are able to enter the System mode.

The Airplane System mode flow chart includes model selection, wing type, switch select, trainer settings, modulation type, model copy, model type and model name entry. When you reenter the System mode, the display shows the last program selected.

Pressing the Scroll Down and Select keys while the radio is already on calls up the Function Mode flow chart. The Function flow chart includes Dual Rate and Expo, Servo-Reversing Switches, Sub-Trim, Travel Adjustment, Ele->F mix, Ail->Rud mix, Throttle Cut, Flap System, Program Mixes 1 through 4, Fail-Safe and Servo Travel. The Scroll key takes you through the selected flow charts. Once the appropriate function is displayed, use the Select and Increase/Decrease keys to make changes.

For quick access to the various screens, turn the radio on and then hit the Scroll Up and Select keys at the same time. You can then navigate through the list and press the Scroll Down and Select keys at the same time to enter the menu that you have selected. Again, the ease with which you can move into the various menus is welcome.

The standard airborne pack includes a PCM R770 (or a standard FM R700) receiver, a large-capacity 1100mAh battery pack and 4 or 5 NES-537 servos.

 

XP6102 HELICOPTER FEATURES

Not only is the XP6102 an exceptional airplane computer radio, but it's also a low-cost system with practical, versatile features that are ideal for heli pilots. A quick look at the heli programming shows just how much JR has packed into the software, and after you scroll through the menus, you'll easily see that ease of use was a high priority.

The XP6102 is a multifunction radio system; its programming is divided according to model type (airplane and heli), and its functions are split in two modes: System and Function. System mode includes basic programming items such as model selection, type, name and switch assignments, modulation and swashplate types. The Function mode handles the bulk of the programming: pitch and throttle curves, servo-reversing, travel adjust and all other heli-related programming are input with just a push of a button.

I had a chance to run through the various menus, and without referring to the manual, I was able to figure out most of the programming. The XP6102 offers two programmable mixers that allow you to mix any one channel with any other channel. The mix can remain on at all times or be switched on and off during flight. There are three pitch curves (normal, stunt and hold)


and two throttle curves (normal and stunt) available, and they are represented as graphs on the ample LCD screen. Each curve has five adjustment points and will suit the needs of all but the most demanding heli pilots. To accommodate today's heli cyclic collective-pitch mixing (CCPM) control systems, the XP6102 has three CCPM variations: 2 servo-180 degrees, 3 servo-120 degrees and 3 servo-90 degrees. Standard mechanical mixing is also supported.

JR has come up with a radio to suit all heli pilots. The XP6102 offers four flight modes with 5-point curves and digital trims and programming that's intuitive-a terrific choice for your first computer radio. The manual is easy to understand and does an excellent job of walking you through all of the radio's functions with step-by-step instructions supplemented by clear drawings. The JR XP6102 is a great value for all heli pilots.

-Rick Bell

 

SWITCH SELECTION
Several options are available for the dualrate, landing-gear and flap switches. The aileron and elevator dual rates can be programmed to be activated with their own switches with "Individ," or the aileron, elevator and rudder rates can be combined so you can turn them all on using one of four switches or rockers. The Flap and Gear channels can also be programmed to use one of four switches. To allow the Gear channel to be used as a slave channel for mixing, it can be set to "Inhibit" so that none of the switches can activate it.

Features: 6 channels; 8-character model naming; selectable for PCM and standard FM modulations; selectable switch locations; trainer and pilot link systems; subtrim adjustment; travel adjustment; servoreversing; dual rate/expo for aileron, elevator and rudder; digital trims; throttle-cut system; fail-safe system (only in PCM mode); servo-travel screen; model copy; ergonomic case with soft-rubber side panels; adjustable stick length; 10-model memory; programming for aircraft and helicopter; 5-year lithium battery; Direct Servo Connect (DSC), large LCD screen.

Airplane mixing: flaperon, elevon and V-tail; flap system with elevator trim; elevator-to-flap; aileron-to-rudder; 4 separate programmable mixes.

Heli mixing: 5-point throttle and pitchcurve adjustment; normal and stunt curve adjustment; revo mixing; two separate programmable mixes and CCPM swashplate mix for 3-servo, 90-degree mix; 3-servo, 120-degree mix; 2-servo, 180-degree mix variations.

 


THROTTLE CUT
This function assigns the throttle-cut point with the push of a button. With this feature, you are able to leave your throttle-trim setting at the best idle position and then use the button to close the throttle completely to kill the engine. You can inhibit this function or select the cut point from -32 to -128 percent.


SERVO-TRAVEL DISPLAY
Borrowed from the popular JR 8103, this display gives a graphic representation of servo travel, centering, trim and direction of travel in a six-line display. This screen is helpful when you try various mix adjustments and offers a quick way to get set up and in the proper range.

Top left: when you turn the radio on, the main information display shows the model number, model type and name, the battery voltage, the modulation type, the internal "radio on" timer and a graphic display of the rudder, throttle, elevator and aileron digital trim positions.

Top right: when you switch to the Function mode (by simultaneously pressing both the Down and Select keys), one of 11 function screens is displayed. Here, the Dual Rate/Expo screen shows the settings for the aileron channel. Note the graphic exponential display to the right.

Lower left: the Fail-Safe/Hold function screen is very easy to understand. With the function activated, you can set the assigned channels (throttle, rudder, elevator, flaps and ailerons) to hold their last positions (HLD), or you can adjust each one for a specified servo position. The screen shows that all the channels are on servo hold except for throttle. The linear graphic display indicates a specified throttle servo setting.

Lower right: with its moving arrowhead indicators, the Servo Travel screen is a helpful way to verify the transmitter's stick movements. It can also be used for visual confirmation that your mixing functions are properly assigned without your having to turn on your aircraft.

DIRECT SERVO CONNECTOR
With this feature, you can operate servos directly from the transmitter without turning it on. This is especially useful at events to make programming changes without causing frequency conflicts.


PCM FAIL-SAFE
Another useful feature is the transmitter's Fail-Safe/Hold function. Active only in the PCM modulation setting, this function allows the servos to hold their positions if the transmitter signal is lost or to default to a predetermined setting. All six channels can be set, and the display makes adjusting the servo positions very easy. First you activate the various channels with the Select key, and then you use the control sticks to position the servos. When you have the controls where you want them, simply press the Clear button, and the positions are set. Quick and simple!

JR has always had a reputation for making great radio gear, and the XP6102 continues this tradition. Once you've tried it, you'll wonder why all 6-channel radios don't have the same great features. It's sure to become a very popular choice among RC pilots, regardless of what they fly!

 

The JR AirPac 5 is a good way to outfit extra models without your having to buy an entirely new radio system. With the XP6102's 10-model memory, you'll be able to use several additional flight packs.

The standard FM R700 receiver is also available. Both types of receiver use the interference-protection circuitry.

JR AIRPAC 5
With the versatility of a 10-model memory, the XP6102 is ideal for modelers who want to outfit several models with separate flight packs; it's much more convenient than switching radio systems and servos between various models. Priced at $144.95, the JR AirPac 5 has a 3-year warranty and is a good way to get everything you need in one package. Included are five NES537 ball-bearing servos, a R700 FM 7-channel receiver (crystal required), a small switch harness with charging jack, a 12-inch aileron extension and a largecapacity, 1100mAh Ni-Cd battery pack.

SLIMLINE R700 RECEIVER
The new JR Slimline R700 FM receiver replaces the popular R600 and is the new baseline FM (PPM) aircraft receiver. Not only does it have one more channel than the R600, but it's also smaller and weighs less. Like all JR FM receivers, the R700 features JR's patented interference-protection circuitry and is compatible with all current JR FM aircraft systems.

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