[amsat-bb] Cushcraft dual band Beam

[Rolf Krogstad]

Bob,
I used one on satellites for a few years before building a helical 70cm
antenna.
I had to make an extender tube for the matching network and that allowed me
to adjust the matching network to an SWR of around 1.5:1.

I have the antenna in the garage.  Let me know if you want me to take
pictures.

GL
Rolf   NR0T

On Wed, May 29, 2019, 12:49 PM Robert Bruninga via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> Any success with a cushcraft A27010S dual band beam?
>
> Just got a new one and it tunes up perfectly to 1.1 SWR but only at 150.1
> MHz.
>
> Nothing we do with the matching network can lower the frequency to 145 MHz
> where it is off-scale high SWR.
>
> We now added 1/2" sleeves to the driven element and threaded on #10-32
> nuts on the end of all the wire elements to lower the resonance, but the
> best is still only at 148.2 MHz.
>
> Am going to try extended the two piece boom an inch and lastly will try to
> extend the matching element.
>
> Just wanted to see what others did to make this beam usable.
>
> Bob, Wb4APR
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