[amsat-bb] AO-91 and circular polarization?

[Jerry Buxton]

Todd,

Correct is not really a consideration, the way I see it.  Will a CP
antenna work?  Yes.  Polarization should not matter for AO-92.  (BTW I
presume you mean AO-92, not AO-91 in which case L band just flat won't
work no matter the antenna, period.)     :-)

I use RHCP because I built my antenna for AO-51 and that is was in use
at the time.  I believe that when CP is used on a satellite, at least in
the AMSAT history, it has been RHCP most of the time so building for
RHCP may have advantages for future satellites.

Jerry Buxton, NØJY

On 3/11/2018 15:44, Todd W Deckard wrote:
> Would it be correct to use a CP antenna on the L-band uplink for AO-91?   If so which polarization?
>
> Just purchased an ICOM X-2 on ebay that gets me 1.2ghz and the temps are getting civilized so it’s about time to get back on the air ...
>
> My elev. over azimuth system is already swinging more mass than it was geared for and i’m looking to cook up a small antenna that doesn’t add too much straw to the camel.  
>
> I would like to go Helical just because ...
>
> if anyone has an alternate suggestion I’d listen to any and all.
>
> Thanks
> Todd
> KE0CMD
> Sent from my iPhone
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