[ARC5] T-19 Real World Antenna Matching Problem
David Stinson
arc5 at ix.netcom.com
Sat Dec 29 20:32:03 EST 2012
The simplest solution for any of the 3-4 MC Command Transmitters
is 200 pFd 1000 VDC or better between the ANT post and
the coax center conductor. Adding a 4:1 Unun will improve
the match and the harmonic attenuation.
See the photos at:
http://home.netcom.com/~arc5/UNUN/
(shows installation in an RE-2 or BC-442 antenna switch)
For 40 Meters, use 50 pFd.
For 160 Meters, use 1000 pFd.
IMHO, the extra 5% you'll get out with a variable cap
in place of the fixed one is not worth the "kludge"
you'll have to do to implement it. YMMV of course.
73 DE Dave AB5S
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