[amsat-bb] Fixed elevation - how many elements?

Juan Carlos Reig ecoalfa5wa at gmail.com
Mon Jun 17 19:49:29 UTC 2019

Why not an LFA from G0ksc? 

I think is a good option

73's from EA5WA Juan Carlos 

En 17 jun. 2019 19:21, en 19:21, Martin Cooper via AMSAT-BB <amsat-bb at amsat.org> escribió:
>Thanks very much, everyone, for all of the feedback and suggestions.
>Much appreciated!
>Now to figure out how to adjust the DK7ZB designs slightly for
>satellite frequencies...
>On Sun, Jun 16, 2019 at 7:32 AM Martin Cooper <kd6yam at amsat.org> wrote:
>> I'm contemplating building a couple of yagis, possibly even crossed
>> ones, and putting them up at fixed elevation (i.e. az-only rotator).
>> What I'm unclear about is how many elements to consider.
>> My location is really pretty dreadful for seeing sky. There's a big
>> hill to the NE that restricts me to above 40 degrees in that
>> direction. I'm in a single-storey house, with neighbouring two-storey
>> houses to the NW, SW, and S. In between all that, there are other
>> single-storey houses, and trees in most of the gaps between houses. I
>> can't afford to put up a tower (and it could never get above the hill
>> anyway), so I'm looking at not too much above my roofline.
>> To at least get through the trees, I'd think more elements would be
>> better. But more elements narrows the beam, and at fixed elevation,
>> that, at some point, will restrict even further how much of the sky I
>> can play with.
>> I'm looking for thoughts on how many elements would be recommended,
>> and how many would be too many, for a fixed elevation, both for VHF
>> and UHF. Ultimately, I'd like to be able to get on the linears, so
>> limited to the FM sats. Any thoughts would be much appreciated.
>> Thanks in advance.
>> Martin.
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