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Attention: RC-CAM.com will be closing down August 2021.

The RC-Cam.com forum was the very first online community dedicated to the advancement of wireless video cameras on radio controlled (R/C) models. This is now called "FPV" (First Person View). We are proud of the contributions that our members have made to the FPV hobby.

We've seen significant changes over the last twenty years. Initially there were a lot of eager R/C hobbyist that built their own video systems. Allowing these creative individuals to share their work was the purpose of this site. Now the FPV market is flooded with low cost systems; Sadly DiY FPV video projects are now rarely discussed.

RC-CAM.com (main site and forum) will be closing down August 2021. This was announced several months ago (March 2021) to allow our members ample time to download any information that is important to them. After the site is shutdown the information will no longer be available here.

We appreciate every member's involvement with advancing the FPV hobby. It is indeed sad to say goodbye to all our online friends. Be safe and stay healthy.


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  1. Thanks Thomas for your reply. No I have not tried different ESC/BEC that has a switcher VReg but i will find and try. Yes i have tried different BEC that has a switcher but same issue.Using Hitec ESC's LDO BEC,it gets much better but i can still see some interference but that i can tolerate. No I have not but i will post my wiring diagram here. Sorry I don't have expertise to pinpoint ground loop issue. I am attaching a picture of my LC filter that i tried. I tried low esr 470uf,680uf,1000uf and even 2700uf on the 12v power rail and 5v servo rail. I tried to install filter on 12v just before the switching BEC and i also tried to install it on 5v output of BEC but same thing. I think the LC filter i used is in series with the positive as ground goes through. I also monitored my 5v output from the switching BEC and its quite stable even under full servo load.It remains at 5.02 volts One more thing i noticed. If i power my system by 12DC ,AC wall charger, I get no interference. So does that mean interference is getting grounded to my house ground? Does that mean there is no ground loop issue? Thanks.
  2. Hi all,Need suggestion from the experts here.My Servocity pan and tilt servos(Hitec HS 785 HB) are putting interference back into the 12v power line and it creates white patterns on my monitor. Interference is visible only when the servos are moving or jittering or if i try to move my tracker forcefully by handI am feeding 12v from a 3S battery to my monitor,pitlab groundstation and to switching mode Ubec which converts 12v to 5 volts for servos.All servo leads are twisted and i have tried using ferrite rings,LC filters, low ESR caps and nothing is working. If i use seperate 12v battery to feed the Ubec that supplies 5v for the servos then i get no interference on my video.If i use older hitec heli esc instead of ubec to feed the servos from the same battery, then i get much less interference .I think its probably due to the fact that heli esc has a 5v LDO instead of switching regulator.So is there any way to isolate the servo power so that servos can't feed interference back into my 12v rail?How about isolated 12v to 5v converters? Please suggest. Thanks.
  3. Thanks Thomas for your suggestion.I will try different distance and see which works best.I am going to put everything on one tripod.I have 2 oracle diversity controllers and might try 4 antennae too!!
  4. Hi all, First of all i would like to thank Thomas for creating a Oracle diversity controller!! I was using eagle eyes and when i tried oracle,its a day and night difference.Oracle is much more faster than eagle eyes.It switches so quick and fast that you don't even notice.Where as eagle eyes takes so much time to switch after the reception on one antenna goes bad.I even tried max sensitivity on eagle eyes but no improvement. Now to my question.I am running two 1280 RHCP antennae and would like to know how far i should separate them for good diversity setup in which i get minimum multi-path static on my video?Thanks.
  5. Thanks Thomas.I will double check that metal ridge at the end of the SMA connector.
  6. Old thread but need some info. I just got hold of old Racewood TR1500 1258MHz receiver.But when i opened it up and found a different module than a comtech? I tested it wit 433MHz dragonlink and its showing no interference even at running dragonlink at full power and placing dagonlink's antenna by the receiver antenna. So wondering what module is it?Is it good quality with good sensitivity for long range?Normally in the past,all the tuners other than comtech showed massive interference from 433 control.Any info please?Thanks.
  7. Good advice!! I got some chip quick which i can use with hot air station.Not sure if hot air can damage the adjacent components?
  8. Thanks Thomas. I will first try flying long range and compare it with my existing RMRC comtech with saw filter already modified with D480A.If the difference is not much then i will leave it alone. Regarding PCB rework,i am not that expert but i think i can handle this.I got Hakko desoldering vacuum gun which should help in case i need to replace.So far i have replaced main MCU on my frsky QX7 transmitter after i nuked it when accidentally i supplied trainer port with 5v and also some RAM chips on my VW diagnostics tool. Are these SAW filters temperature sensitive?
  9. Hi Thomas, I just got hold of 2 used range video receivers.I tested these receivers by placing clode to my dragonlink antenna(at full power settings) but no interference at 1280 MHz. So i thought they must have been modded by D480 saw filter.But when i opened it,i found NM F480-2 and it looks like 21 or 27 MHz filter. So wondering is it worth to swap the saw filter on these receivers?Please suggest.Thanks.
  10. I haven't done anything yet with the chinese no name Rx as i wanted to have comtech tuner.I was thinking that its just a saw filter that i need to replace but when i opened it,,F 480-1 was already there. Maybe just comptech module with good saw filter can solve the problem. Do you have any comptech module that i can buy.Then i will modd it with your proper saw filter and can tst it it interferes with UHF.
  11. Thanks Thomas for the detailed explanation.I wish you have any 1280 Mhz Rx in stock. I am tempted to try out your 900mhz Rx and will try to replace the saw filter on it. I really appreciate your honesty in providing proper details and not trying to just sell your product.Also i have couple of your products working flawlessly from the years!!
  12. Thanks Thomas for looking. I can control the frequency with pitlab controller then. So now I want to try one Rx first from you and will mod it with your saw filter. But one thing is confusing for me is that i have a no name 1.3ghz chinese rX which doesn't have comtech tuner and i get terrible interference from 433mhz dragonlink.But i opened the tuner cover,its fitted with F480-1. So looks like its fitted with proper saw filter and i am still getting lots of interference where as my RMRC 1.3 Rx doesn't show any interference.Does that mean there are other components involved to get rid of 433mhz interference?Please suggest.Thanks.
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