I have no experience with either antenna and certainly not with the two
arranged as yours are.
This is probably a topic for TowerTalk.
Go to eHam.net and use the eHam Detective to search the reflectors'
archives for previous debate on this topic.
This works great at finding old posts.
Failing that, I would try the guys on TowerTalk reflector for specifics.
73
Mike N2MG
n2mg@contesting.com
On Thursday, September 09, 1999 11:32 AM, Jonathan Kaplan
[SMTP:jonk@jskent.com] wrote:
> The M2 sits about 5 ft above the TH7DX on the towers mast. Also the
> M2 is rotated 90 deg from the TH7DX, so I would think they are not
coupled.
> Do you know diffferent?
>
> Thanks for the quick reply.
>
> Jonathan
>
> At 10:03 AM 9/9/99 -0400, you wrote:
> >Is your new M2 closer to the tribander than the old dipole was? How
> >close is it, now?
> >Sounds like coupling - the 40M antenna IS resonant on 15 after all.
> >
> >Mike
> >n2mg@contesting.com
> >
> I've been slowly putting on line my tower installation with a
> >> TH7DX and a M2 40 mtr dipole atop a 55ft crankup. I've noticed
> >> a strange behavior since switching from a tuned dipole. My
> >> Clipperton L amp will tune either for power or SWR on all bands
> >> but 15mtrs, but not for both. In other words, when I tune the AMP
> >> the power meter (a RS model) will either show greater power at
> >> a high SWR or low power at low SWR.
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