Date: Sun, 25 Apr 2021 15:37:41 -0700
From: "John Keating" <john.keating@sbcglobal.net>
To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] feedpoint capacitors
<The wire dipole is a coil loaded inverted vee. I added the L-C match because
<I wanted to operate it off "native" resonance.
<John
<AI6LY
## use a helical hairpin at the feedpoint. Then compress or expand the coil
for flat swr. like 3-5 turns of 12 ga wire such that the coil is aprx 3”
diam x 2-4 inches long.
## since it’s a loaded ant, BW is narrow. A simple DPST relay can be used
to shunt out a small
coil or loop in each leg..at the feedpoint.
## CM choke goes to feedpoint... coax to stn.
Jim VE7RF
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|