Tom the name comes from the inductance used on Yagi's as a Hairpin match
simply because it looks like one. When used on a vertical it simply goes
from the bottom of the insulated conductor to ground. Are you using a PI-
L network in the PA for a start. I would worry about harmonic content as a
separate issue to the best way to configure the L or T. Again a simple coax
stub could fix the problem.
73 Clive GM3POI
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Tom
Boucher
Sent: 03 September 2018 18:16
To: 160 reflector
Subject: Topband: Capacitive vs. Inductive Matching of Inverted 'L'/'T'
I used to use a slightly shortened 'L' with a small inductor at the base
until I was told by LA5HE that he could hear me on 80 as well as 160!
Using capacitor matching forms a low pass network which will reduce harmonic
radiation. The inductor method forms a high pass L-network.
BTW, why is it called a 'hairpin' inductor? Looks nothing like a hairpin, or
does it?
73,
Tom G3OLB
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