Topband: tech. article - rx antenna amp.

[MarkWA1ION@aol.com]

I have a new technical article on the Web.  It
describes an amplifier module suitable for three
different antenna types: low-impedance broadband
loop, high-impedance terminated loop (Pennant,
Flag, etc.), and whip antenna.  Terminated loop
operation includes Vactrol adjustable termination
circuitry.

See "TMB-1 Tri-Mode Buffer Amplifier Box" at
"http://www.qsl.net/wa1ion/tmb-1/tmb-1.pdf" (PDF file)
and "http://www.qsl.net/wa1ion/tmb-1/tmb-1.zip"
(zipped Word document and GIF schematic files).

Mark Connelly, WA1ION - Billerica, MA, USA
e-mail = "MarkWA1ION@aol.com"
RF Circuits page = "http://www.qsl.net/wa1ion/index.html"