[amsat-bb] Re: Other Sat ants
Gordon JC Pearce
gordonjcp at gjcp.net
Fri Jun 5 07:28:28 PDT 2009
On Fri, 2009-06-05 at 10:12 -0400, Justin Pinnix wrote:
> How hard is it to reproduce the Elk in a homebrew? It's a log perioidic and
> all of the "build your own" articles I've found on the web are for yagis.
> Are the log periodic's dimensions more critical?
Log periodics are somewhat fiddly.
> What about building a pair of yagis (
> http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf) and mounting
> them on the same boom? That would eliminate the need for a diplexer,
> depending on how you were planning to hook it up.
Well that's what I built - a WA5VJB for 2m and one for 70cm (3-ele and
5-ele) and an HB9ABX diplexer. It works pretty well, but the antenna is
fiddly to tune.
I recommend tuning up each antenna separately, then fitting the diplexer
and tuning that.
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