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TopBand: Re: 160 LP (fwd)

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Subject: TopBand: Re: 160 LP (fwd)
From: kaufmann@ll.mit.edu (John Kaufmann)
Date: Fri, 05 Feb 1999 13:23:14 -0500
At 07:36 AM 2/5/99 -0500, Bill Tippett wrote:

   I've personally got thousands of LP QSO's on 40
>and 80 that say otherwise (and no, my Beverages don't work backwards!)  With
>all the experience N7DD has on 40, I'm sure he is very well aware of this
>path, as are most low band DXers.   I believe 160 LP follows the same
>propagation mechanism but is more rare.
>
>

I also have many LP QSO's on 80 and 40 (not as many on 160 unfortunately!),
and in cases where the DX stations have had directional antennas, they have
also been beaming LP to the USA.  Even for skew path, which happens fairly
often on 80 to areas like JA via the S/SW path, the JA's with directional
antennas report that they beam skew path in the S/SE direction from JA.
Sometimes LP and SP are open simultaneously and on a non-directional
receiving setup, one can distinctly hear the LP signal as an echo.  This
happens quite a bit on 40 m around local sunrise and with my Beverage
antennas it is possible to do quick direction switching and actually
resolve the LP and SP signals spatially and temporally.  With so many
observations of apparent LP or skew path propagation (even simultaneous
observations of the same LP event) from stations with widely varying types
of antennas (horizontal arrays, vertical arrays, Beverages, etc.) in widely
separated geographic regions, it seems implausible that these could be
anything but LP/skew path.

73, John W1FV


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