Charlie-- That antenna has one of its dipoles
resonate at 18.090 MHz. 3 X 18.090 = Aprox 54
MHZ ! Also, dipoles tend to be broadband
devices. This is the same reason that a 40 Meter
dipole is useable on 15 meters! And, the
SWR doesnt do much more than increase loss in the
feedline (on long runs), so it should work
at least until you get an antenna with some gain
on 6! Jim NN7K

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.

Jim - NN7K wrote:
Charlie-- That antenna has one of its dipoles
resonate at 18.090 MHz. 3 X 18.090 = Aprox 54 MHZ ! Also, dipoles
tend to be broadband
devices. This is the same reason that a 40 Meter
dipole is useable on 15 meters! And, the
SWR doesnt do much more than increase loss in the
feedline (on long runs), so it should work
at least until you get an antenna with some gain
on 6! Jim NN7K

SNIP

Jim,

I came to the same conclusion that iy must be the 17m dipole, I
guess I got too fixed on looking for resonance (old harmonic
relationships). Anyway, this coming weekend I will put up a dipole
and make some comparisons and come back with the results.


Thanks!


Charlie.

--
M0WYM
www.radiowymsey.org