Topband: 160 ground plane choke

[Carl]

I would think the W2DU style would be the lightest but also pretty 
ineffective on 160 as well as power limited.

Use a heavier duty rope (or #12 solid Copperweld , non resonant lengths of 
course for all bands), and a couple of Fair-Rite 2631803802 31 mix 2.4" 
toroids. Use RG-400,  to wrap the toroids and then LMR-400 or similar if 
running 1500W. RG-8X will handle 1500W on 160 but its a bit marginal 
especially when the VSWR climbs or when you decide to try digital or RTTY.

Carl
KM1H



----- Original Message ----- 
From: "Cqtestk4xs--- via Topband" <topband at contesting.com>
To: <topband at contesting.com>
Sent: Saturday, September 27, 2014 9:50 AM
Subject: Topband: 160 ground plane choke


> I've been using a 160 GP with 4 radials.  It's a Tee-top  supported with a
> rope between two towers, with the top around 165 feet and the  base at 70
> feet.  I'm feeding it with RG8X to keep the weight down on  the rope which
> supports it.
>
> Although it works well I would like to negate any loading which  might be
> taking place on the feed line which drops from straight down from  the 
> base.
> Any ideas for a cheap, easily made, effective choke on the  feedline?
>
> Bill K4XS/KH7XS
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