To: <towertalk@contesting.com>
> Date: Sun, 03 May 1998 10:03:28 -0700 (PDT)
> From: Dale Jones K5MM <ddjones@nas.com>
Hi Dale,
> During hissing-static times, the 80 meter antenna was terrible, and
> the 160 mtr folded dipole was perfectly quite. I have no explanation
> for why this was the case. I just liked folded dipoles (even though
> they required a tuner near the transmitter) and I had one for 160
> already built up.
It's tougher to get coronas discharge through insulation for a number
of reasons.
You may have hit on another solution, put the antenna in a radome.
> Now, for a commercial installation like Todd has for his local
> public utility, it would be fun to experiment with a Crossed-Dipole
> made up with two Folded Dipoles. Can't prove it, but I'd bet it
> would be much better than what he has.
Not if the other stations in the system were using verticals.
But an insulated housing would help, especially if it were a less
than perfect insulator at dc (a few megohms per square inch maybe).
73, Tom W8JI
w8ji.tom@MCIONE.com
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|