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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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But look what I found when I opened the antenna, only the cover is long, the antenna inside is the same lenght than the other antenna. Also the antenna don't have a good connector, only a ring inside the connector for the ground, the antenna must be tighten. It can not resist any vibration, it must be use only on receiver.

post-2-1138984681_thumb.jpg

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Yep, those are the units I bought recently from the same people, very good units, just a bit fiddly to connect.

That aerial looks just like some of the others I have cut out of their plastic covers. I have found the aerial goes off tune a fraction when the cover is removed, also when you put heat shrink back on, I trim them when covered now :)

Terry

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  • 2 months later...

I've seen a few of these 'supposed' higher sensitivity antennas's sold as higher gain 1/2 wave's when in fact they just longer plastic mouldings, with a 1/4 wave dipole.

I've been messing with receiver dipole antenna's swopping the 1/4 wave for a 1/2 wave dipole makes heaps of difference to the receiver sensitivity. A recent simple walk test validated this: 1/4 wave gave about 80 metres.. 1/2 wave gave about 150 metres (TX was on my workbench in house, so not as good as line-of-sight)

Try modding that small whip (probably 29mm) to 62mm (Ch 1) or 60.77mm (Ch 4) and retest.

Stevie

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I tried the same thing some time back but I found no improvment at all. If it had worked out better I was going to make a 1/2 wave patch but I gave up the idea. Has anyone else had any luck with this ?

Terry

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