Joe reisert, w1jr/w1jaa, worked extensively with acft scatter on 70 cm lax-sfo
in the 60s
Bt73 pete, n6ze
Sent from my iPhone
> On Jul 16, 2016, at 03:50, Les Rayburn via VHF <vhf@w6yx.stanford.edu> wrote:
>
> I’d like to hear from experienced VHF operators on this one. Recently, I’ve
> devoted a lot of time to doing some DXing of the FM broadcast band when the
> amateur bands are not too active.
>
> I’m still very new at this, in only my 2nd season of FM DXing. But have a lot
> of experience at working meteor scatter on the 6 Meter and 2 Meter bands,
> along with more traditional modes like e-skip, and tropo.
>
> Just got my system optimized to the point that I can reliably pick up signals
> via meteor scatter on the handful of quiet or semi-quiet frequencies that
> remain here. So far, I’ve managed to log two stations, both via audio
> recordings. I use software called “Total Recorder”, then park my receiver on
> a frequency overnight and let the audio recorder run. In MP3 mode, the files
> are manageable, at around 500MB. Nothing yet in terms of RDS decodes, but
> hope springs eternal.
>
> Last night, I had a period that lasted exactly 1:42 seconds, where meteor
> pings were happening one after another on 90.1 FM. No ID’s, unfortunately,
> but at least three stations were heard including a Spanish language station,
> a classical music station, and a religious (spoken word) station. Another
> station was identified from a promo that was being broadcast, it was WFYI in
> Indianapolis at a distance of just under 500 miles.
>
> The individual pings lasted only a few seconds each, with nothing but static
> in between—but these pings were nearly continuous during the 1:42
> period—silence lasting only 4-5 seconds at a time, followed by another ping.
>
> During major showers, I’ve seen this type of activity, but we’re not in a
> major shower at the moment. I’ve also experienced so-called “Blue Whizzers”
> which are long duration burns—sometimes 8-12 seconds. But nothing like this.
>
> At 2:23 AM, it’s highly unlikely to be e-skip. And I’ve never heard of tropo
> going from noise floor to S-9 in seconds. Looking for other explanations, I
> started to wonder about reflections off an aircraft.
>
> Have any VHF operators experienced propagation like this? Any thoughts about
> what the mechanism could be?
>
>
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
>
> Elad FDM-S2 SDR, AirSpy SDR, Quantum Phaser, Wellbrook ALA1530 Loop,
> Wellbrook Flag, Clifton Labs Active Whip.
>
>
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