Re: [amsat-bb] Beam for 70cm Uplink on AO-40

[Emily Clarke <emily@xxxxxxxxxxxxxxx>]

Yes, you can.  I made my first contacts on AO-40 using a 5 element Arrow 
antenna for the uplink.  But I really had to pour out the power to make 
it.  I live in a townhouse apartment so my stuff is very small and 
portable.  So I use a small Diamond 10 element Yagi.  I wish I could go 
bigger but the CC&Rs are 39" (the Diamond is slightly larger at 41" but 
hard to tell without measuring.

The advantages of being circularly polarized is that you are less 
susceptible to QSB.  So if you have space and money to purchase circularly 
polarized antennas I would.  But if you are short of cash and/or need 
something small and portable, take a look at what I use.  The Diamonds are 
not prohibitively expensive and come in a 10 and 13 element that are broad 
banded with really good gain for the size.

73,

Emily




At 01:43 PM 10/16/2003 -0400, Christensen, Eric wrote:
>I have seen that most people are using circularly polarized or
>cross-polarized beams for the 70cm Uplink.  Then I see that the DXpedition
>on Christmas Island is using just a horizontally polorized beam for their
>uplink (maybe...  Just saw the picture
>(http://www.qsl.net/vk9xt/images/ao40.jpg) and I am assuming that they are
>using it for the uplink.  Does this mean that I can use a regular beam for
>435MHz horizontally???
>
>73s,
>Eric KF4OTN
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