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Hi all,

Hope this isn't a stupid question:

Is there a difference between 433mhz and 915mhz antennas supplied with 3DR style radio modules, and if so how can i tell them apart?

I've been struggling to get a decent telemetry link with knock off versions of the 3dr / SIK radio modules. I'm in the UK, so can't use the 915mhz versions, however, a quad I bought came with a set already fitted. Since then some confused eBay sellers have sent me even more of them when I specified 433mhz kits. Very frustrating. 

The result is that I now have a pile of radio modules - a mixture of frequencies, and of course, a  load of the standard shaped antennas that come with them. Any clues as to which antennas work on which frequency would be most welcome, before I have to go out and range test them all in various configurations.

Thanks

Tom