Accord

I have a 3PK radio, it works perfectly in HRS mode, however when I switch it to PPM mode, I have zero response from any of the electronics in my car. I followed the instructions in the manual on exactly how to switch from HRS to PPM mode.

Please help.

Thanks

InitialD

I think when changing modes like that, you need to switch off the Tx and on it back. Do the same for the Rx.

Accord

I did that, I still had no response .

Arun

Look in the electric forum.

fastharry™

iTrader: (4)

are you trying it with a FM reciever?.........(not an hRS)?

AreCee

iTrader: (1)

And with the correct crystal. There are two styles of crystals for Futaba FM receivers, short and regular.

Is the Rx and Tx on the same band? 27 or 75 MHz?

CHUCKMANDO

iTrader: (4)

Did you change and put in a ppm receiver? I believe the ppm mode will only work with a ppm receiver

modellor

Yes, the receiver must be PPM compatible.

Manticore

Download the manual here and look at page 16 about modulation select.

AreCee

iTrader: (1)

The problem is solved. He was trying to use the HRS Rx with PPM modulation which is why it wasn't responding.

I think he now understands how it works.

TambokGT

DUH?....who reads the manual nowadays, huh?

PPM = use FM receiver - digital and analog servo compatible
PCM = use PCM receiver ( has failsafe feature) - digital & analog servos compatible

HRS = use HRS receiver ( has failsafe feature ) - digital servos only