Simple, resonate the vertical at about 1.9mhz. Then add the inductance across
the feed point which may well be in the 2-3 micro Henry region. But use a
variable L and slightly alter the L or top loading to get the match where it's
wanted. I have used a hairpin match and a T Vertical for a number of years.
The only valuation consideration is the vertical design i.e. is it a T or L .
T being better, and the quality of the radial system. 73 Clive GM3POI
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of N4ZR
Sent: 01 September 2019 18:47
To: topband reflector
Subject: Topband: Hairpin match to inverted L?
The other day a ham friend suggested using a coil ("hairpin") to match
the low impedance of a well-radialed inverted L to 50-ohm coax. This
struck me as a potentially-attractive alternative to a series vacuum
capacitor, but I don't know enough to evaluate it. Thoughts?
--
73, Pete N4ZR
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