Random vertical antenna
"-.-. --.-" wrote in message
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Hi there,
i'm thinking about build from scratch on the roof of my house a
lightweight random vertical antenna (with small pvc tubes or fishing rod)
feeded by an automatic ATU. The same antenna with some kind of leverage
will be erectable from 0° to 90° (plain to my *plain* roof) to avoid &
prevent lightning but this is a mechanical history... so:
Many posts about the Rybakov antenna reports the use of a 4:1 UN-UN. I'm
not sure about the real needs of this kind of un-un... you readers what
have to suggest about height and un-un if you have to build a random
vertical to cover 80-6 meters with a decent efficiency ??
TIA,
-.-. --.-
forget the un-un, just feed it direct with coax and put as many radials
under it as you can. most of the efficiency questions are then due to the
tuner.
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