Topband: Hairpin match to inverted L?

FZ Bruce k1fz at twc.com
Sun Sep 1 15:07:12 EDT 2019


The reason to use a series capacitor is to electrically lengthen the
antenna wire, driving the high current point up the vertical section,
for more efficiency. The capacitor electrically shortened the antenna
to the 160 meter band.. With the right amount added wire and capacitor
the feed point would be 50 ohms, without a transformer that could
limit bandwidth somewhat.
73
Bruce-K1FZ 

	-----------------------------------------From: "N4ZR" 
To: "topband reflector"
Cc: 
Sent: Sunday September 1 2019 2:46:33PM
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
 Check out the Reverse Beacon Network
 at , now
 spotting RTTY activity worldwide.
 For spots, please use your favorite
 "retail" DX cluster.

 _________________
 Searchable Archives: http://www.contesting.com/_topband [2] - Topband
Reflector
 

Links:
------
[1] http://reversebeacon.net
[2] http://www.contesting.com/_topband



More information about the Topband mailing list