[UK-CONTEST] UK-Contest Digest -Aircraft Reflections

[Ken Eastty]

Ray,

Propagation via reflections from aircraft is not limited to 70cm & above 
as I'm sure you realize.
I can hear GB3ANG beacons on 2 & 4m virtually the whole time regardless 
of 'tropo' conditions (as I type this 'ANG is 1-2 S points above noise 
in a 500Hz BW). Last year when airliers were grounded due the 'ash' from 
the TF volcano I took the opportunity to monitor the signals from GB3ABG 
on 4 & 2m. For most of this period the beacon signals were either 
completely inaudible or occasionally audible right down in the noise.
Once airline flights resumed the beacon signals returned to their normal 
strengths.
Virtual radar shows that for most of the time there are many aircraft in 
the sector to the west of Manchester, just nicely placed midway between 
my QTH & Dundee. Not surprising that this works, Watson-Watt wouldn't be 
surprised but he didn't have lots of aircraft at FL370 & above to play 
with. It makes me think that a lot of VHF QSO's rely on this mode of 
propagation.

73...

Ken

G3LVP


> From: Ray James<gm4cxm at yahoo.co.uk>
> Subject: [UK-CONTEST] Aircraft Reflection
> To: UK Contesting<uk-contest at contesting.com>
> Message-ID:<353781.91716.qm at web24108.mail.ird.yahoo.com>
> Content-Type: text/plain; charset=utf-8
>
> Hi all,
> Following my talk at last years convention and on-air activities, I get regular requests for more information on the use of aircraft reflection as a means of nabbing some nice distant contacts under flat tropo conditions and contests on UHF and Microwave bands.
> Much of the content from the memory stick is retained for club talks I do but aircraft reflection appears to be to the most popular personal request.
> I have therefore added a page to my website on the operational side of the subject and trust those interested will find it useful.
>
> http://www.rayjames.biz/gm4cxm/id28.html
>
> 73 Ray GM4CXM
>
>
>
>
>
>
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> End of UK-Contest Digest, Vol 99, Issue 27
> ******************************************
>