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I thought of that but there are a bunch of other things on there like TV
antennas, dishes, clothes lines, back yard lights, etc etc. Stunt it, just wanted to throw up a crazy idea, I know it is a very broad question. What is the smallest thing I could use with a pretty good tuner? On top the utility tower? How about a car/truck "screwdriver" antenna? I have a pretty good tuner and will use the tuner to tune. The combination of a short vertical, a tuner in the shack, and a coax feed, is not a particularly happy one. You *may* be able to tune it, in the sense of presenting a load to your transceiver which won't cause its output section to complain or leak blue smoke. However, the losses in the tuner, and (particularly) in the coax feedline, are likely to be very high... you won't get much signal out, and you may end up with high enough voltages on some sections of your coaxial feedline to cause arcing (even at "barefoot" power levels!) So, the two approaches I can think of which might work would be: (1) A "screwdriver" antenna or equivalent... a vertical whip (longer is better) and a remotely-adjustable loading coil. (2) A vertical whip, and a remote-controlled (or self-controlled) antenna tuner / transmatch mounted right at the base of the whip. In either case, you'll probably need to use the tower itself as the "ground" (counterpoise) for the tuned antenna... plan on running some heavy, low-impedance braid from the tuner to the antenna mount point. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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