[GreenKeys] Fwd: Very Slow Shift Frequency keying?

[William Strangfeld]


At least one person spotted it. A local Cincinnati ham told me long ago that he somehow noticed the WLW carrier frequency was changing very slightly - maybe 10 cycles. So he called the station engineer. The engineer denied everything of course. This probably was in the 60s. Never heard anything connecting this to WLW’s super power days though.



On Apr 20, 2023, at 11:58 AM, Jeff G <jeffg at junknet.net> wrote:


Makes you wonder if there's recordings of these transmissions - I guess being back in that day with interference and all, a small hz difference probably wasn't even noticeable to anyone.

Jeff

On Thu, Apr 20, 2023 at 11:51 AM Duncan Brown <duncanancy at earthlink.net<mailto:duncanancy at earthlink.net>> wrote:

This has been discussed here various times over the years.

The original version of the document that Nick mentioned "Use of Commercial Broadcast Stations for Emergency DOD Communications"  (now declassified) was available at http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD800669&Location=U2&doc=GetTRDoc.pdf   I cant open the URL now, but I have a copy of the pdf if anyone is interested (~4.5 Mb)

Have fun,

Duncan
K2OEQ

On 19-Apr-23 19:22, steve bennett via GreenKeys wrote:
Ever heard of this?
[Inline image]




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