I skipped getting the 4 el 6 meter beam as it is rated at 400 watts PEP.
Sounds like there is something in the beam that did not like the high power
thus the change in SWR and frequency.
Dave K4JRB
----- Original Message -----
From: Courtney Judd
To: ACG
Cc: SECC
Sent: Monday, September 09, 2013 4:24 PM
Subject: [SECC] swr on 6 mtr beam
ok antenna gurus what did i do wrong? originally the swr on this 4 el Hygain
6 mtr beam was a perfect 1:1 at 50.1 . But I wanted to run high power thru it
so the manual calls to change the coax balun from rg58 to rg213 which i did
except I think that the coax was RG8. It was cut to the same length as the 58
as per the manual. Now the swr at 50.1 is 2:1 and the resonant point for 1:1 is
clear up at 52.0 . I don't want to change the element lengths as they should be
right on. Only thing else is move the beta match in or out some.... or match it
some other way. Would the 213/rg8 make that kind of difference? Maybe I should
change the length of that coax! Ideas? help!!!! lol, Cort K4WI
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