So lets figure this out,

-Prologue
I have a moded TGY9x with the 9xtreme board from smartieparts (i had the prevoius smartieparts board) and installed th FrSky DJT tellemetry Module and swapped all my recievers to the D4R-II with 27ms cppm fw and one D8R-XP.

As for firmware on the 9x I'm using the ERSky9x that comes with the 9xtreme board.

Everything on the bench works like a charm, I even use the control to play HotProps and FreeRider without a problem.



-The Issue

Range of FrSky (and rssi value): the range on the FrSky module seems oddly inconsistent, hence I have not flown more than ~150m. right next to the RX, i get a signal value (displayed on the 9x) of 100 (wich i'm only guessing it's a percentage and not the real value as this should be negative and closer to zero).

If i move ~10m away, signal drops to 75; at 50m signal drops to 50 and the 9x looses telemetry comunication (9x screaming "no telem") BUT i can still arm/disarm the quad and navigate the osd menus without a glitch (on the naze).

If i go to 100m, signal drops to about 30, still I have signal for controling the quad and the 9x screams " no tlemetry" 

These tests were performed on an open field.




Ive been dealing with this problem since I upgraded the controller.

So, this weekend I went to fly again, and AGAIN my 9x just screams " No telemetry" and signal drops drastically at any distance after 50m, specially the TxSSI (which hits zero almost immediatley).
Even though it has really bad signal (RxSSI drops to 45 at about 100m) I do not loose control of the craft and I have flown up to about 200m.

This happens with any Rx (D4R-II and D8R-XP). I dont have my old turnigy module to swap back for testing, and none of my buddies that have gone to fly with me have modular (or FrSky compatible) controls.
i do know one guy with a Taranis, hopefully I can do some testing with his control this comming weekend.

So, I am clueless on what is going on with my range. Doesn't seem to be a problem with the 9xtreme or the rx's.
Could be this something going on with the DJT module (would i need a fw flash, new module...?) or maybe something going on with the 9x itself...?

I spoke to Mike (the maker of 9xtreme) and he believes there might be an issue either with the DJT module itslef or the antenna on the module.
I have tested about 6 different antennas (all 2.4GHz) with the module that I salvaged from my old electronics stash. Antenas range between 4dBi and 9 dBi omnidirectionals.

I will be upgrading to something else in the near future but I would very much enjoy keeping my 9x as backup/experiment controller (or at least in good state for sale).

Any ideas? I'm run dry and with no clue on what to do.

-Wolken

I have the same issue, after changing module to frsky DJT and d4r-ii, cppm, using 9x Extreme, the default erSky9x

my signal loss is kind of random, could be near or far away, I can't tell when it's going to fall.

I'm going to try PWM to check, but that's odd!
and a spare v8r4-ii

with the previous 9x Programmer board and the 9x module didn't had any issue, but the module died so I can't test yet, I bought a flysky module so I can use again those 9x RX's

BTW: did you had the chance to test it with a taranis?

Still need to test with Taranis.

This issue is definetly odd and I cannot tell if its the module, the 9extrme or the controller itself.

sounds very much to be the module: first same issue happens on 2 different RX... secondly, it started after the upgrade...

yea test with Taranis to rule out the RX completely
hopefully you get get this figured out soon! keep up updated!