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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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FPVLR (a FPV shop) began selling it for our FPV application a couple years ago. The compact size is very nice.

But the cost to buy it would probably push a DiY'er into building a traditional helix because those are well documented. If you develop a DiY half sphere helix then please come back and share the build details.


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Yes I much more familiar with the helix but even a short one is quite long. I was looking for cp patches originally but so many are out of stock then I saw the half sphere but the price put me off so wondered how hard they are to make. Are they as effective as they claim? Why are they so expensive, is there something in them that is not obvious just by looking?



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Why are they so expensive, is there something in them that is not obvious just by looking?

I think you know the answer already. Inexpensive FPV products are produced in China where material and labor costs are a minimal. Custom developed products from other countries don't have such advantages.

I don't have any experience with it so I can't confirm the antenna works as well as a traditional "full size" Helix. But there should be some user feedback scattered on the web, so dig a bit deeper to see what the users are saying.

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