"Hi,   I bought two antennas from RCT (433 MHz Set) but I think they are cheap 2,4 GHz antennas. I have made a X-ray og them together wit an original 2,4 GHz antenna   "

"Here is a 2km mission using a new 2dB antenna on the plane and a high gain on the GCS (field test logs attached). No more loss of signal with the new antennas so I'm quite pleased with the results. "

"@ Byron, i am getting similar values with 433mhz telemetry module.realy looking forward for your field test results. thanks"

"I have since replaced the original 433mhz antennas and now get about 195 when doing the 1m test. Using the original RCTimer antennas I got about 120... I will be doing some field tests this weekend using the following antennas and will post my…"

"I've had the same issues with my 433mHz 3DR radios from the start. I'm not sure what's going on. I've done all the tests suggested in this thread and come up with a similar result as Michael. When I set my Tx power to 20dB and…"

"Hello, Are you sure your antenna is not broken ? Would explain the 1 m distance"

"Hi,Regarding to Byron questions, I replaced the antenna and all works fine since then, with successfull field tests. No problem of connections neither loss of signal (at close - medium range, of course - I only have tested as far as 2 km from GCS ).…"

"Hi Eladio, I seem to be having the same issue as you had. Have you replaced the antenna? And have you had any successful field tests?   thanks"

"Hi Tridge, You are right: I have a bad antenna. I already had tested all solders in both modules and all were fine. But now I have touched with a screwdriver the antena pin of local module and RSSI values (both locale and remote) rose to 194! No…"

"Hi Eladio, If that was at a range of 1 meter then those values are way too low, and I don't think that a bad antenna could explain it. I think it is quite likely that either the PA is burnt out, or there is a bad connection on the RF side of…"

"Hi, I have just done the test as requested but I only get 117/127 values for RSSI/remRSSI respectively (as I supposed taking into account my previous experience). I think that antennas should be fine although I will probably can test with other ones…"

"Hi Tridge, I'll do that test and I'll tell you but I think that I have never reached a RSSI value over 200 Cheers, Eladio"

"Hi Tridge, I tried to do the test as suggested but now one of the modules seems to not be communicating. When I select load settings I get the information for  both the local and the remote (See image 1). However, when I try to connected I…"

"Hi Eladio, Can you try one more test for me - this one you don't need to go outside for. Setup both radios to transmit at 20dBm, and run them at a distance of 1m apart, with both antennas pointing up. Open up mission planner and the…"

"Hi Tridge, Thank you very much for your analysis. I agree that is better to move the aircraft instead of moving the GCS but I was alone and it was easier to do it in that way and also because I could see the evolution of RSSI values by MP tuning.…"

"Hi Eladio, It is better in a range test to move the aircraft instead of moving the GCS, as that way I can get a plot of signal versus distance (by looking at how far the GPS position moves). Here is the plot anyway for your first tlog: the main…"