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Gettng on AO-40 - Uplink Antenna

Hi all, got some equipment for getting on AO-40.  Looking at a 435 Mhz
uplink antenna.  Hope to be on in a month or two.

Question, is the circular polarization uplink antenna such as a M2 436CP30
verses a single polarization unit a good way to go?  My research has
indicated that there is a 3 db difference to the sat, plus possibly less
fading?  I guess how much better is it in terms of operation?

Also, I understand that the RHC polarization, just set the antenna up for
that, no need to change polarization?  I assume that the A040 antennas
basically allwaya point back at earth in the same polarization.  I guess
what Im asking is if there is any reason or need for a polarization switch
to optimize the uplink signal.

In addition, any comments on this antenna verses the unit from Gulf Alpha
antennas.  That unit is about 3/4 the boom lenght of the 117" M2 unit.  Any
users out there with comparisons?

I will be using a FT-847 with 50 watts out (or less) to one of these
antennas.  Question is that without offending LELIA (I think thats the name
anyway) will 50 watts do the job (assuming reasonable feedline loss of 1 to
1.5 db) or will a brick still be required?  I really dont have a feel for
this as all the reading I have done kind of shows guys using different power
levels across the board.  Also I imagine this has some to do with single
verses circular polarization as well.

So, sorry if this has all been covered before (I would imagine it has) and I
appreciate any info from the veterens on the bird.  Any tips appreciated,
dont want to be a lid.

73 and thank you.

Mike - KM0T en13vc - NW Iowa

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