[450] [Spam?] antenna (or feedline) woes

[Robert Busino]

Noted.
  
 N1UJS
  
  
  

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 From: "David McKenzie" <k1fsy at vhfwiki.com>
Sent: Friday, October 6, 2023 4:50 PM
To: "144.450 Mailing List" <450 at lists.vhfwiki.com>
Subject: [Spam?] [450] antenna (or feedline) woes   
 I noticed this morning when I returned the meter to its normal position on 
the output of the TE systems amp that I was only getting out about 150 
watts. I didn't check the reverse power immediately but when I put a 25W 
slug in backwards at 100W forward it shot up like crazy. Connected the 
nanovna and sure enough the match is completely screwed (with the tower 
mount preamp off .. which also makes a difference!) Oddly enough I'm 
hearing fine as I was tracking Rich up Rt 8 with no issues, so I suspect it 
may be water intrusion. It doesn't change when i rotate/shake the antennas 
so I don't think it is on the antenna, but it could be the preamp or the 
connection at the preamp that is at issue, or the old hardline, or the 
connection between the hardline and the coax outside at ground level. I can 
check the ground level connectors when the weather is nicer but if it isn't 
that I'm out of luck until my foot is healed well enough to get back on the 
roof. Gonna have to hook the loops back up.


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