On 12/16/18 6:28 AM, Paul Christensen wrote:
You want to ensure the that the choke's self-resonant-frequency isn’t within
80m. I am using J.W. Miller 5252 chokes at the vertical base feed. Purchased from
Mouser.
Prior to installing the Miller chokes on 80m and 160m verticals, high-voltage
static was destroying my K3's SWR bridge Schottky diodes. Zero problems after
the chokes were installed.
Paul, W9AC
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Jamie WW3S
Sent: Sunday, December 16, 2018 9:17 AM
To: towertalk@contesting.com
Subject: [TowerTalk] rf choke for vertical?
I’ve read/heard that an rf choke from the vertical to ground will help bleed
off any static and help reduce noise levels on the vertical. For an 80m vertical,
running 1200 watts, is the value/rating critical?
you could probably use a 1 meg resistor.
the current is microamps
Although a 1 meg resistor might be self resonant on 80m...
maybe a noninductive lump of coal, if you've been naughty, you'll have
one to spare<grin>
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