RX REDCON CM621 DSM2 100m :( Devo 7E

Hello I buy an RX Redcon CM621 DSM2 6CH but not work more than 100 meter is normal?
is there a way to change the distance covered
I use a Devo 7E with 5.0.0 Deviation with a modification CYRF6936 module.
I made the short circuit the diode.
I edit the file hardware.ini
[Modules]
has_pa-cyrf6936 = 1
it works very well with my RX601 I have increased from 300 meters
is there a solution?
thank you

What is your range with a genuine Spektrum receiver AR6210 on 1mw? up to 60m? at least 30-35m?

Are you sure you made everything right on short circuiting?
www.deviationtx.com/forum/6-general-disc...m2-zero-range-solved

First thing I would do is buy a "good" receiver and then check your range with Spektrum (DSM) FlightLog and TM1000.

Hello and thank you for your reply but I did not Spektrum receiver to test it.
I have only rx601.
and my short tour yes it is well done because I saw great improvement with my rx601 distance.
can you tell me what other RX 6 chanels not expensive are compatible with deviation?
Spektrum I know not compliant models and found the list of compliant RX Deviation
thank you

Honestly, I even had never heard of CM621 before

DSM2 sucks anyways...not compatible with newer ETSI 1.8.1 in EU because it is no FHSS jumping protocol: www.rcmodelreviews.com/dsm2flaw.shtml


At least I would be looking for a DSMx receiver which supports telemetry and FlightLog.
There are some threads about newer OrangeRX or LemonRX.
But some tests with those in a German forum on newer transmitter where not so good (DX18/DX9) - FrameLosses raised too much.

I have no idea how good actually they are and if the FlightLog really works on Devo transmitters. My plan is to test in summer.

I personally would first focus to get a telemetry which is not only half-range / parkflyer.
The TM1100 half-range / parkflyer is fine for 450 helis.


Honestly I can not give you the advice you want to hear.

IMHO this is the wrong concept to focus on "non-expensive" receivers without FlighLog (DataPort).
It may cost you your model if it does not work as it should. They will give you no warranty for your models.


Therefore I have to leave this thread to the other guys here which have more experience with Oranges and Lemons and how good actually their telemetry are with Devo transmitters.


If you really really really want to know if your hardware mod is working you should get a genuine Spektrum RX, a TM1100/TM1000 and read out 6 FlighLog numbers on 30/35m++ max to ~60m distance as already suggested.

At least you can then compare all the "good" FlighLog/telemetry numbers from Spektrum RX to Orange/Lemon & Co number laters.

I hope others will jump on this thread.

I've just started flying a CM621 with a devo6, but haven't done full range checks yet; will get back to you when I get around to it. Also got a CM421 which has yet to be installed anywhere.

DSM2 is perfectly fine.

I hadn't heard of Redcon until a few months ago, but my research indicated they are pretty decent; several range test videos side-by-side with lemons, a genuine AR7010, and a fake AR6200, showed it to be pretty-much as good as the AR7010 and better than the lemon and fake AR6200 (which was pretty dismal).

RoGuE_StreaK wrote: I've just started flying a CM621 with a devo6, but haven't done full range checks yet; will get back to you when I get around to it. Also got a CM421 which has yet to be installed anywhere.

DSM2 is perfectly fine.

I hadn't heard of Redcon until a few months ago, but my research indicated they are pretty decent; several range test videos side-by-side with lemons, a genuine AR7010, and a fake AR6200, showed it to be pretty-much as good as the AR7010 and better than the lemon and fake AR6200 (which was pretty dismal).

Hi,
I'm very glad to hear that RoGue_Streak, as I just received those same 2 Rx modules yesterday also.
Still waiting for the quad kit to put the 6-Ch in and have nothing yet to use the 4-Ch in either.
But I will report back here with my own test results when I have done them so we (community) can get an idea about the quality / issues with these little Redcon receivers.

l8trs, MHz.

ok thank you to reply with your opinion !!!

Same here, I just got Redcon CM621 and it doesn't go much further than 10-20 meters. Note I have install it on a ground vehicle so it might affect shorter range. I'm using devo 7e with increase range mod.. Any improvements?

ok so I'm not the only one I get to have my devo7E 80/100 meters with changing the diode
for the CM621 should be tested by modifying the antenna wire.
it is not expensive but not effective CM621

Have a cm-621 and range is around 30 m in 150 mw mode with a range mod hopefully done (tested for continuity with multimeter)
Will try get my hands on a genuine spectrum model and see what happens

Same problem here with Redcon satellite. But the range it's 4 meter... And the signal is lost random...

Today I replaced my Redcon with OrangeRx615x and I am starting to have doubts on my cyrf6936 module(DSMX module on Devo 7e). The range is pretty much the same with 150mw settings, I think I have removed and shorted the diodes when I first bought Devo 7e.

This is my first time to actually use DSM protocol, I have been using NRF24L01 installed and it has been working great..

Anyone else tried other settings?

I use my cyrf6936 module RX601, and it works very well with the short circuit of diode and I have not changed the antenna I have increased from 300 meters even more.
this is the first time I use the DSM2 with Redcon CM621
I use my devo7e nRF24L01 with my WLtoys the V666 yet it works very well with a worn even longer

fr.aliexpress.com/item/2-4GHZ-AR6200-6CH...93-b48b-5ae2a0a817c9

I would like to buy the one but I fear he works well yet
I like to have opinions

update my situation, I have to do more testing but I think all my problems with receivers are due to Cc3d mini. Once I switched to mini Naze32 the signal sounds great. Only known, in DSM2, if I turn on the transmitter first and then the receiver I have a blinking LED, if you first turn on the receiver, the LED is fixed.

AR6200 makes no sense. This very old RX was was DSM2 only.
I read that many AR6200 fake receivers are around...

www.rclineforum.de/forum/board49-zubeh%C...ie-echt/#post3958241


I don't understand. Why can't you guys just buy a normal genuine Spektrum receiver like AR6210, AR610 from a good HorizonHobby dealer, etc.

Thomas.Heiss wrote: I don't understand. Why can't you guys just buy a normal genuine Spektrum receiver like AR6210

AUD$120. You seriously don't understand?

I found that the 11euros but it is good and it is true?
fr.aliexpress.com/item/AR6210-6CH-RC-REC...1a-80ef-28dc4895444f
or
fr.aliexpress.com/item/S603-6CH-2-4GHZ-R...1a-80ef-28dc4895444f

That's of course not a genuine Spektrum receiver.