Jim, I have to go the tower route due to no trees tall enough in this area. And I plan on a 120 radial grouns system. Ted -- Original Message -- Sent : 3/22/2015 6:26:21 PM To : towertalk@contesting.
Jim, Looking at the spacing on the 500 pfd. cap in the SA2550 it should be plenty robust for most current fed systems; however the breakdown voltage may not be high enough for a voltage fed high Z sy
I'm looking at a tower that is 137 ft. high and 12 inches on a face. Alowing for shortening due to the length diameter ratio, ths is an electrical 102 degrees on 160. The series capacitane required y
the band. A monimatch located just before the Capacitor with the appropriate motor driver circuitry will automatically adjust the capacitor for the best match. My design is for a single tower but sho
Richard, That is the kind of circuitry I was concidering. I hadn't determined exactly what kind of circuit but the phase detector sounds very good! Ted Clapham VE6AMR -- Original Message -- Karlquist
I once had a shunt fed 60 foot tower that was super effective for transmitting on 160m, even with little or no radials... Used a variable capacitor in a box for the "gamma rod." Best regards - Brian