I can remember listening to this with my old Pye Communications Receiver (PCR-2).

There is an interesting document at http://www.vibrationdata.com/Newsletters/March2006_NL.pdf starting on page 9 is a description of Sputnik 1 along with some pictures (including one of Roy Welch).

Page 11 has the following paragraph:

"The signal was a Pulse Duration Modulation (PDM) signal, according to Reference 2 and 3. Sputnik's internal pressure was encoded as pulse length, and temperature as length between pulses."

Also references the amsat web site for the audio:

http://www.amsat.org/amsat/features/sounds/firstsat.html

Regards,

John g0orx/n6lyt

-- John Melton Sun IT CTO Office UK Office: +44 1252 421708 (ext 21708) US Office: +1 650 568 4504 (ext 65504) Mobile: +44 7714 708861

Dave Guimont wrote:

Hi Lee,

I "heard" Sputnik, and all I can tell you is that I heard a series of "beeps"....I was a navy pilot stationed at St. Louis NAS at the time, and just had a receiver with a simple wire antenna.

I can tell you nothing more than that, and have no idea what, if any, information the "beep" carried, and do not know today what was conveyed..

If you find out let me know!!

        73, Dave wb6llo@amsat.org
                Disagree: I learn....

           Pulling for P3E...  

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