Per the following added comments.
Me too.
Or the inverse as I did, cut my T for the low end of the band. Then
three series capacitors with PCB relays to short each individually
(none, 1, 2, or 3) yielded nearly full band coverage <1.5:1 swr. My T
is 85' to top and a 50:25 ohm TLT is a close match, then the capacitor
stack follows. Caps and relays fit in a weather tight plastic box
about 3x5x8". Of course the resonance resistance and capacitor values
depend
I did exactly this for an 80/75 meter dipole. Worked perfectly.
I am planning to do this same thing for my 160 meter vertical
when I get around to it.
Rick N6RK
Transmitting type capacitors are expensive and hard to find these days.
An air wound coil on ABS using copper tubing with Un-Un matching
transformer will run you about $25 when built by oneself. The advantage
of tuning high and using 4-5uh coil with Un-UN is the antenna is at
electrical ground all of the time. This allows cheap relays and prevents
pitting by static discharge. In this way your gas discharge radio
protection only needs to function on induced impulse voltages saving you
from singing arc plugs and additional costs.
Bob, W7RH
--
W7RH DM35OS
It has become appallingly obvious that our technology has exceeded our humanity.
Albert Einstein
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