I did and it was easy and worked well. I could not find much info (Internet
found one picture and not much in handbooks for a hairpin on 160). I "WAGed" it
and took #10 solid wire and wrapped 12 turns around a 3" form and shunted it
across the feed point. I dialed in the match by spreading and compressing the
coil. My inverted L is suspended between two tall trees with four resonated
elevated radials (81' long) up 20'. My original feed point impedance was about
35 ohms. I used my Comet antenna analyzer for this process.
73, Mike WA5POK
On Sunday, September 1, 2019, 2:47:07 PM EDT, N4ZR <n4zr@comcast.net>
wrote:
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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