[Meteor-Scatter] MS question 144mhz

Sat, 19 Jul 2003 12:57:00 +0200

Hi H�kan,
500ms is quite short for plainescatter on 144MHz.

Plainescatter on 144Mhz is usable up to 500...700km at my qth.
The doppler is up to a few hundred Hz and the duration approx.
10...60sec (depending on offset angle of the plaine's route).

Especial on busy airlanes for example Frankfurt/M (db0tau/b) or
Praque/Budapset (hg1bva/b)is heavy plainescatter so that the dsp-screen
sometimes looks like knitting scheme.

I realized vy low number of plainescatter at the regular 600...700km 
beacons.

Over the alps i wkd i4xcc and ik4dxc ~800km with 800mW several times, the 
qsb
was like scatter via plane, but the TransAlpPropagation sounds similar 
probably.

At home with 5el 2m agl and vy vy bad take off is a plane reflection the 
only
chance to lsn baecons more than 200km away...

73 de Steffen - DD0VF

H�kan Harrysson <[email protected]> schrieb am Sat, 19 Jul 2003 11:13:16 
+0200:

> Hello!
>
> A question from a new beginner in MS,
>
> I wonder how to recognize air plane scatter?
>
> I heard a stn today in the direction the airplanes go over my qth.
>
> I copied him with a solid stable signal 500ms  8Db on FSK441.
>
> It absolutley not was like a MS ping or burst
>
> Could it be a reflection from a plane?
>
> 73 H�kan SM7WSJ
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