[amsat-bb] Falling Arrow

Andy w5acm at swbell.net
Wed Jan 3 01:00:15 UTC 2018

Bypass the diplexer and attached coax completely with a single coax run to either the 70-cm elements or 2-M elements (depending on which band you are listening on). Compare the results to the antenna array with the diplexer coax arrangement. I had a failed BNC connector on my Arrow and have heard of folks with coax problems at the diplexer board.

Andy W5ACM
And C6ACM when on appropriate cruise ships...

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of John, 9H5G
Sent: Tuesday, January 02, 2018 5:20 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Falling Arrow

I’ve become aware that my Arrow may be failing. I’m less and less able to hear the birds towards LOS and sometimes it’s taking the 1st 1/4 of an FM pass to hear anything typically more than 30 degrees elevation. 

I know there are many of you working at much lower elevations so I’m beginning to think I have a problem. It’s a salty environment here in C6 and there a little corrosion here and there. Sadly, I have no antenna analyser with me for UHF or VHF. I’ve already stripped it down once and cleaned everything so any advice on the following gratefully received:

What elevations is it reasonable to hear each FM sat using a THD-72 (listening VFO A). What other places might I look for reduced performance?

Thx and 73 

de John, C6ATS

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