A classic balanced line antenna tuning network can be built from the output
components of a Raytheon RA1000 1 kW transmitter. It was one of the few that
used push pull 833As in the RF, and had a symmetric tank with a huge inductor
having a small motorized variometer (link coil) in the center for the antenna
connection, and a split variable capacitor. The inductor was for AM band, so it
has enough L to work down to 160 as well. Keep an eye open for RA1000s getting
dumped, not too many left.
73
John
K5PRO
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