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Topband: Inverted Vee Feed Question

To: topband@contesting.com
Subject: Topband: Inverted Vee Feed Question
From: Jim Bennett <w6jhb@me.com>
Date: Fri, 23 Nov 2012 13:21:24 -0800
List-post: <topband@contesting.com">mailto:topband@contesting.com>
I'm looking into installing an inverted V in the next couple days and had a 
question about the feed. I run low power (<100 w with a K3) and will be using 
RG-8X. The antenna will be for 80 meters at first, and perhaps chopped shorter 
later this year for 40 meters. Anyway, my question is whether to put a 1:1 
balun at the feed point, a common mode choke, or both. I've got a nice homebrew 
choke now on a test, very low antenna: seven loops through four stacked 2-1/2" 
mix 31 toroids. Are both the balun and CM choke needed, or would the choke by 
itself be sufficient? 

Interestingly, neither the ARRL Antenna Book nor the Handbook mention having 
both on an antenna, although both are discussed, separately.

Suggestions?

Jim / W6JHB 
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