Re: ant tuner

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From: Jim Kearman (jkearman@arrl.org)
Date: Thu Mar 24 1994 - 11:04:04 EST


Evert asked about QRP antenna tuners for long wire antennas.
I use a design by Wes Hayward, W7ZOI, from Solid State Design.

Page 167, Fig 60. It's for 40 meters. Use twice as many
turns on the coil for 80, half as many for 20. It should
work on 30 meters as is; mine does.

The relative SWR bridge included is neat. It puts a load on
the xmtr while you're matching the antenna, to protect the rig.
I used a plexiglas front panel so I didn't need insulated
couplers on the variable caps. You can get away with this at
QRP levels!

73

Jim, KR1S


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