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Old June 3rd 07, 02:20 PM posted to rec.radio.amateur.antenna
Bob Miller Bob Miller is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 219
Default 50Mhz Antenna Conundrum

On Sun, 03 Jun 2007 01:12:47 +0100, charlie
wrote:

Interestingly, I am able to put out a signal on 6m using a fan
dipole designed to work from 20 through 10m. Today I got a report of
5-7 over a 1600 km path. The antenna design can be seen at
http://www.radiowymsey.org/FanDipole/FanDipole.gif .

As far as I can see none of the dipoles resonate on 6m - the 40m
dipole would if it was straight dipole with no loading coils. I
guess one of the dipoles has an odd multiple near enough.

The fan dipole goes into a 50 MHz LPF and then the ICOM 703 ATU. I
wonder if anyone has an insight into how this antenna is working on 6m.


Charlie.


I can tune my 20 meter dipole to the low end of 6 (that is, 1:1 swr)
using my mfj 986 tuner with the antenna capacitor set at about 4.75.
I'm thinking of just putting up a plain 6 meter dipole, for
comparison.

bob
k5qwg