[amsat-bb] Coax routing question

Gary Mayfield kk0sd at tnics.com
Thu Dec 18 04:08:41 UTC 2014


	It should not be a problem. In fact some of us have used metal
cross-booms. Just be careful of where along the boom the cable exits onto
the cross-boom. There was a paper written by antenna guru Kent Britain,
WA5VJB. I have been given permission to share it via my web site. You can
read the results here:

73 and Good Luck,
Joe kk0sd

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Dave J
Sent: Wednesday, December 17, 2014 5:35 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Coax routing question

I am assembling a satellite antenna system using the M2 2MCP22 and 436CP30
circularly polarized antennas with polarity switches and a fiberglass cross
arm. The M2 instructions specify the feedline going off the rear of the
antennas. Mechanically I would prefer to route the feedline and polarity
control up the boom to the cross arm. I plan on mounting the antennas in a
cross pattern with no element parallel to the cross arm. Since the RF
connectors face the rear I was planning on making a hairpin loop at the rear
of the boom or using good quality 90 degree elbows. Just wondering if folks
have had experience setting things up this way and what effect (if any) this
would have on performance. 


Thanks and Happy Holidays


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