Radio System FAQ

There are a variety of differences. MOST differences are noted here, listing what the 9C does or does not have when compared with the 8U Super.

PHYSICALLY:

1. Easy-Program Dial to speed up and simplify programming.
2. 2 Sliders in addition to the 3 dials.
3. A ninth, switch only, channel (available only with the 9Channel PCM receivers.)
4. No snap direction switches on the radio's face. Instead up to 4 separate, fully programmable snaps are available within the programming, with direction and amount of throw each available separately. Regular switches are used to switch between the 4 snap settings, if desired.
5. New smaller trainer port (chords available for 9C to 9C and 9C to older style jack.)
6. Larger visual display for ease of use
7. Image of model type visible on screen
8. Three timers, all always visible on home screen - 1 is how long radio has been on this use, other 2 are programmable by user.

ALL MODEL TYPES PROGRAMMING:

1. Basic and Advanced menus rather than scrolling through feature by feature.
2. Addition of Aux Ch screen. Auxiliary channel control screen allows you to easily select what knob/dial/switch is the primary control for servos 5-9. Even allows NULL which means nothing has primary control over the servo, so that you can then easily use that channel as a slave in a mix without having to worry about turning off the regular control for that channel. (Cannot reassign channels 1-4 or assign channels 5-9 to the sticks. Only the flagship radio, the 9Z, does this.)
3. Servo activity display screen and servo test. On screen view of what the radio is instructing the servos to do. EXCEPTIONALLY helpful when working on setups for an incomplete model, helping another modeler at the field.
4. TRIPLE RATES available within the dual rate programming if you select a 3 position switch for that rate's control. (Note that the radio has only 2 3-position switches, so to have 3 triple rates you must combine 2 rates onto the same switch.)
5. Graphical displays for curves.
6. Dual rates assignable to all 8 switches. (Both radios allow dual rate activation by stick position.)
7. Dual rates and expo together on the same screen for ease of programming (9C CAN DO TRIPLE RATES easily on this screen by simply selecting a 3-position switch.).
8. Does NOT have the ability to reverse the colors on the trim display on screen.
9. Idle down programmable on any switch (8U assigned to C or E only).
10. Defaults fail safe for throttle to a low throttle setting. Even if you forget to take the time to set up your fail-safe parameters with a PCM receiver, the system automatically sets it to bring your engine to a low idle in case of interference. Note that the user should ALWAYS set up his/her own fail safe settings to best fit the model and situations of its use.
11. Programmable mixes allow a slider/dial to be the primary control, thereby allowing you to adjust a specific channel in-flight by using a set dial and a programmable mix. Great for setting up trims for servos other than 1-4, adjusting travel on certain features during setup, etc. The 9C's 5-point mixes include LINK option.
12. 8U has 6 character model name. 9C has 8 character.
13. 9C's EPA (ATV) and Dual Rates range from 0-140%.

AIRCRAFT/ACRO SPECIFIC PROGRAMMING CHANGES:

1. Elev-to-flap programming can be turned on/off with a switch, and that switch is fully assignable.
2. Triple rates easily available in D/R programming via use of 3 position switches.
3. Has 0-4 individual snaps available, all fully assignable as far as %. Although the 4 are prenamed right/up, left/down, etc, ability to enter negative percents means all 4 can be set up as desired. NOTE: regular switches on the radio are used to select between the 4 snaps. In both radios, snap roll programming is inhibited if trainer programming is active.

GLIDER SPECIFIC PROGRAMMING CHANGES:

1. 9C has no idle down or throttle cut programming.
2. Elevator to flap programming has the option to turn on/off with a switch, and that switch is fully assignable.
3. Triple rates easily available in D/R programming via use of 3 position switches.
4. Start and Speed Offset programs both include a VR dial to adjust the entire set of offsets together in flight.
5. 2-flp glider programming Flap-to-aileron programming includes an offset and switch assignability. 8U had no offset and is forced to switch D.
6. 2-flp glider programming: ail-to-flap mixing has switch assignability. The 8U forced to switch.
7. Elevator to flap programming has the option to turn on/off with a switch, and that switch is fully assignable.

HELI SPECIFIC PROGRAMMING CHANGES:

1. No invert mode, no invert offset.
2. Triple or even quadruple rates (automatically selected with each condition) easily available in D/R programming via use of 3 position switches.
3. Has 3 idle ups, not just 2. Adjust all 4 throttle curves on a single screen with graphic display.
4. Program offsets1 and 2 on a single screen.
5. Has 3 revo mixes just like 8U - 1 for normal, 1 for idles 1 and 2, 1 for idle 3.
6. Has not only 2 linear mixes but also a single 5-point curve mix.
7. Hover throttle and pitch adjustment dials are selectable (5 choices), including direction.
8. Gyro programming includes CONDITION option which gives FIVE gyro settings, one for each of the 5 conditions (normal, idles 1-3 AND throttle hold). 8U did not offer a way to have a separate gyro selection for throttle hold. OR can assign any switch, A through H, including 3 settings on 3 position switches.
9. Governor programming offers full switch assignability, including option to set a cut channel with full switch assignability for the cut.
10. Governor programming also has an option for a setting based upon condition giving you FOUR governor settings (just like the 4 dual rates and the 5 gyro settings) PLUS still having a cut switch (required to access the condition choice).
11. Throttle-needle programming has 3 curves: norm, idles 1&2, and idle 3 (instead of one), but no acceleration option.
12. Governor programming does not have a setting for throttle hold; the governor is automatically turned off in throttle hold.

KEY ITEMS THAT HAVE NOT CHANGED:

1. All three model types in all radios.
2. Same module, CAMPac (but holds 6 models in 9C not 8).
3. Same number and placement of switches and rotary knobs (but 9C adds 2 sliders).
4. Full digital trims.
5. Uses same battery door and transmitter battery.