[time-nuts] Antenna question about RHCP/LHCP I'm sure a time-nut can answer

Dr. David Kirkby david.kirkby at onetel.net
Sat Jul 7 16:48:18 UTC 2012


On 07/ 7/12 05:43 PM, Magnus Danielson wrote:
> On 07/07/2012 06:21 PM, Dr. David Kirkby wrote:

>> I can confirm that I'm 100% sure that the polarization of the two
>> antennas needs to be the same - i.e. both RHCP or both LHCP. I built two
>> of them for RHCP, and got appreciate gain.
>>
>> Despite what other may say, there does seem to be a lot of confusion
>> about this issue, but I've satisfied myself by building them and testing
>> the gain using a VNA as the signal source and detector.
>
> We had this straighten out about a month ago, and me posting more or
> less as I landed from a transatlantic flight wasn't optimum (tired and
> waving hands didn't help, as I got it wrong).
>
> RHCP should match RHCP and LHCP should match LHCP.
>
> Cheers,
> Magnus

I must admit, I was pretty convinced a month ago they should match, but there is 
nothing like actually verifying something experimentally.


Dave



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