[amsat-bb] Re: Crushcraft A144-10T "VHF Twist" Antenna
Bill Bordy, NJ1H
nj1h at comcast.net
Thu Oct 3 21:22:56 PDT 2013
I have a Cushcraft A144-20T. Twice as many elements in each plane than
yours. I run both a vertical and horizontal coax to my shack and use a
crossover coax switch with phasing and impedance matching coax to
generate switchable circular polarization in the shack. Works great for
me. The polarization change makes a big difference at times on the
I can also run just vertical or horizontal polarization by changing the
coax configuration in the shack. In fact, you can use the same crossover
switch as a SPDT to experiment with changing between horizontal and
vertical polarization. I do this during VHF contests sometimes. I have
also worked meteor scatter with it.
I have been using this antenna for 25 years with no problems. I used it
with AO10, AO13 and AO40 with no problems. The low orbit birds are
really loud compared to the high orbits birds.
On 10/3/2013 10:18 PM, Les Rayburn wrote:
> I just acquired a "new" in the-box, never assembled Crushcraft
> A144-10T "VHF Twist" antenna. It includes the cabling to allow the
> user to select left or right hand polarization. My questions are
> 1.) How is the performance on this antenna, compared to more modern
> 2.) If I were going to install it inside my attic, should I chose left
> or right hand polarization?
> 3.) Any caveats or things to watch out for?
> Any information that could be provided would be great. I was thrilled
> when a friend stopped by and asked me if I'd be interested in the
> antenna. Good price too.
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