Quote from: ujjwaana on May 11, 2010, 12:16:51 PM
Vinay See, even Ashta sir is telling the same thing I said. Now when you are comfortable with Assan working, you can surely find the +VCC line going to the TX module ans switch it.

  Hello from Kerrville, TX, USA.  I stumbled across this thread  while researching Assan hacks.  Just joined RCI so as to join in. 

  I'm a retired electronics tech and computer nerd.  I recently ordered the Assan hack module kit & a pair of 4-channel receivers from Hobby King.  I plan to modify one of my old 72 MHz band Tx's for flying small models on 2.4 GHz.

  Regarding this thread: I'd put a switch in the +V wiring so as to power only one of the RF decks at a time.  Having both transmitters antennae radiating at once & in such close proximity makes me shudder.  Visions of intermodulation dirtying the band swim in my mind's eye. 

Just my 2 cents worth.

  CR

Welcome Charley to RCI.

Totally agreed that transmitting 2 X 2.4 Ghz may cause problem. What I have noted is that since this is a 2.4 radio, there is no separate TX module board. All are integrated onto one board  .

If I find the +V and the PPM line, then I have to scrape it on the PCB (considering if the PCB is single layered or the these lines are on the top layer.) Since I dont have and oscilloscope and there were no Range problems, and considering the fact that one of the Antenna will be standing when the other is sleeping I mean both perpendicular as I will be using only one. I am as of now ruling out the chances of interference. I am not that much of a a technical guy to investigate these flows on the board.

I heard a head phone listening trick will work, But too busy to do it. 

Hello Vinay,

  Thanks for the welcome.

   Argh!  I guess I spoke too soon.   I have an RDS8000 but have never needed to open the case.  I'll try to find time to do so.  Thanks for the info.

  CR

   

With Hobby City coming out with 15$ RXs for JR, Futaba etc, I think its time for Assan to reduce prices.

We have no idea how long this honeymoon is going to last !  Talk on the forums is that these are a batch of AR6100 park flyer RXs (from an earlier production batch of the now discontinued receivers), or someone made copies of the firmware...  and neither will last for long. 

Hope fully Anwar, I dont want to feel that I wasted money on Assan  

But if you see HK discussions, Jason is promising FASST RXs 

Hi Vinay,

Most of the modern Tx has provision through trainer port to switch of the HF Module when used in trainer mode, when two pins of the trainer side of the buddy cable is shorted. in your case RDS800 trainer port pin layout if I am not wrong must be

Pin 1 - HF dissable
Pin 2 - grnd
pin 3 - PPM out
pin 4 - +Bty/VCC
pin 5 - PPM in

you should try to give vcc from pin 4 through switch to pin 1 also along with the Assan hack to disable the native HF module when you are using Assan module.

I believe this should work.

There is no HF disable in the trainer port as there are only 4 wires reaching the port. The trainer port just provides voltage to enable the signalling circuitry of the trainee radio, the trainee does not use the battery voltage during this mode. The TX module of the RDS gets its power from battery and not trainer port.

Quote from: vinay on November 21, 2010, 12:13:47 PM
There is no HF disable in the trainer port as there are only 4 wires reaching the port.

Thats sad. I saw your photos posted in rcgroups.

http://www.rcgroups.com/forums/showthread.php?t=994433&page=39

Quote from: vinay on November 21, 2010, 12:13:47 PM
The trainer port just provides voltage to enable the signalling circuitry of the trainee radio, the trainee does not use the battery voltage during this mode. The TX module of the RDS gets its power from battery and not trainer port

Then in that case you will be still able to use the Assan hack without switching on the Native Tx Module.

Take +VCC for the Assan hack and for the pin 4 before the switching at the battery point at the main switch. Introduce a toggle switch which will either supply VCC to master switch or the Assan hack.

When it is supplying VCC to Assan hack and Pin 4 now only Assan module and the control circuit is switched on without switching on the Native Tx.  

I understand what u are trying to say, But I dont know if that will switch ON the Radio LCD / switches etc in ASSAN mode. I havent anytime tried connecting 2 RDS as master and slave. So Iam not sure if it will switch on the Slave LCD. Let me see when I open the radio the next time if that will work. Thanks for the suggestions by the way.

Also y so sudden interest in RDS assan? U have 1?

Nope I am pure Futaba and Plantraco. Recently did a hack for Plantraco module on futaba.

Interest in Assan hack germinated when I was about to buy a Futaba 4EX 72 Mhz in the forum

Ordered HK 2.4 6 channel for my colleague's son now. was contemplating Assan hack for the same. Guess not worth the effort as no programing features on HK tx. 

Just saw your post on the recently updated in RCI and pitched in.

Cheers

Anyone still interested in hacking their RD6000S (airtronics/ Sanwa) transmitters with a Hack module such as Assan or Frsky DHT ? I did the same with switched conversion from 35Mhz to 2.4Ghz (actually switching off the 35 Mhz RF). If anyone is interested I can post the way to go about it. Even on RCgroups, people have done this but there is still the irritation about the beeper and the battery voltage reading on panel not working. I have solved this too.
Regards
Saju