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Re: Re: AO-40 EIRP?



At 06:39 PM 4/4/2001, Lee wrote:
>Thank you Yoshi.
>
>Based on what I've found so far, I think the EIRP listed on the web site is
>for the dish.  I suspect the gain on the helix is something like 3-4 dbi.

Check out the helix here:
http://www.rats.fi/suomi/amsat-oh/ant_shf/S2_03.jpg

I count 5 turns.

Then, plug it in here:
http://members-http-4.rwc1.sfba.home.net/fspinner/W0FMS/Helix/

And it looks to be perhaps in the range of more like 11 dB (perhaps a 
little less?).

73,

Mark N8MH


Mark L. Hammond  [N8MH]

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