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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 is being announced now (March 2021) so that everyone has 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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Hi there.

I've been trying various things (shortening Rx cable runs, changing Tx aerial position & angle etc.) to improve working range at 10mW 2.4GHz.

I wonder if people could help me survey 'typical' 10mW 2.4GHz transmitter performance with respect to usable maximum altitude?

Okay, anyone with a one-off record, I'd love to hear that too, but I'm thinking more of the height you tend not to go above because your experience suggests things get too unreliable.

Please include any aerial information you have (e.g. "Tx - standard whip, Rx - 8dB patch"), and anything else you think relevant (e.g. above a flat plain 1000 miles from civilisation, in a natural geological bowl that resonates at 2.4GHz, using directional oxygen-free copper cable, wearing my lucky socks etc. Who knows? ;) ).

Remember, please distinguish between your personal altitude record, and the height you'd usually consider a safe maximum generally.

To kick off:

Usual: 600ft

(Record: 820ft)

- Standard 10mW 'stamp-sized' Tx with wire whip aerial, 2x8dB patch feeding RC-Tech Rxs, Oracle diversity.

- Tx on the nose of MPX Easy Star, whip pointing up. Patches on 1.5m tripod pointing upwards-ish.

- Rolling farmland, with about 3 mobile phone towers in line of sight, nearest 300m away, housing estate about 500m away.

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Hi Doofer,

my personal record was ~300m but I wasn't pushing and there is plenty of meters left to go, for sure.

A friend of mine has shown me a video of his recent flights, and it shows a Dragon OSD with a height of 1.2km.

We both use this system:


2 x 8dBi Patch from Hyperlinktech and Oracle diversity on the RX side. One antenna pointed to the sky directly and one

parallel to the ground.

hope this helps.



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I'm not really into high altitude flying, so if I told you my "usual" flying height it would probably be 200-300m, but more because of interest than because of gear :D

With the gear 500m is no problem, 800m would be max comfortable I'd say.

RC-Tech TX and single RX with 8dB, clean environment.

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