[amsat-bb] Re: Crushcraft A144-10T "VHF Twist" Antenna

Joe nss at mwt.net
Fri Oct 4 06:14:43 PDT 2013

I had a buddy take his and slightly modify it. He took the vertical set 
and optimized it higher in the band. So he had a Horizontal for SSB & CW 
SWR great at the bottom of the band, and a Vertical resonant higher for 
FM work, and Circular for sats, and the slight mismatch diddn't seem to 
hurt it any.

The Original Rolling Ball Clock
Idle Tyme
On 10/3/2013 11:22 PM, Bill Bordy, NJ1H wrote:
> 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 
> satellites..
> 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.
> 73,
> Bill
> NJ1H
> 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 
>> numerous:
>> 1.) How is the performance on this antenna, compared to more modern 
>> designs?
>> 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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