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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.

Underwater signal propogation

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I am building an underwater camera inspection system for use aboard my boat.

I am using the Blackwidow 200 mW Tx/Rx combo. I can hard wire the Tx to the Rx, but I am wondering if I can go wireless, as that would eliminate the need to punch a hole in my watertight camera enclosure (polycarbonate). The Tx would be mounted inside the enclosure, using the short whip antenna that comes with the system, also inside the case. The signal would need to propogate through 6 to 10 feet of water.

Anyone have any guesses as to whether I will receive a useable signal at the Rx?


Tom Killoren


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It's not expected to work well since water is a serious RF attenuator. Especially since H2O resonates at 2.4Ghz. However, it would be interesting to see what the range will be. So, if you try it please report back.

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  • 3 months later...


There is no need to to punch a hole in your watertight camera enclosure.

Simply build a patch antenna and glue it to the inside of the box then on the out side of the box make an identical patch antenna solder the coax cable to the 2nd antenna and encase it in epoxy or some other resin making sure you have a water tight seal around the coax.

Glue this external antenna to the outside of the box matching the position of the inside antenna, conect the other end of the coax to your 2.4 viceo receiver.

Use a good 50 ohm coax, I have done this using low cost RG6 coax and sent 2.4GHz about 100 ft with out any problems even with 75 ohm RG6 coax.

Use a strain relief and a don't stress the coax.

Good luck and let us know how it works.

Dave Jones

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