Audio files from solar cycle 22

kkn50 · #1 (**permalink**) 08-09-2009, 03:42 PM

I recently found a couple of old cassette tapes with VHF low band comms from solar cycle 22 (September 1986 - May 1996 with maximum monthly Smoothed Sunspot Number of 158.5 in July 1989) and am in the process of converting them to digital format. Some audio I recorded, some was sent to me by fellow low banders in the 80s.

I will upload a few of the better intercepts for the benefit of those who missed the great propagation of the late 80s.

Audio files will be here: http://sites.google.com/site/okiesam/solar-cycle-22

Let me know if you find interesting.

kkn50 · #2 (**permalink**) 08-09-2009, 03:44 PM

31.9800 - 1989/09/14 - Fishermen, one clear and one using time domain scrambling.

http://sites.google.com/site/okiesam...ycle-22/319800

kkn50 · #3 (**permalink**) 08-09-2009, 04:06 PM

36.485 - 1989 - Unknown

http://sites.google.com/site/okiesam...ycle-22/364850

kkn50 · #4 (**permalink**) 08-09-2009, 04:19 PM

34.350 - 1989 - Turkish repeater

http://sites.google.com/site/okiesam...ycle-22/343500

kkn50 · #5 (**permalink**) 08-09-2009, 05:18 PM

32.525 - 1989 - Soviet style scrambling

http://sites.google.com/site/okiesam...ycle-22/325250

Ray_Air · #6 (**permalink**) 08-09-2009, 08:41 PM

Quote:

Originally Posted by kkn50

31.9800 - 1989/09/14 - Fishermen, one clear and one using time domain scrambling.

319800 â€Ž(OkieSam)â€Ž

That's Selectone ST-25 rolling code frequency inversion.

kkn50 · #7 (**permalink**) 08-09-2009, 09:06 PM

31.150 - Soviet style scrambling. What's the proper term for this?

311500 â€Ž(OkieSam)â€Ž

kkn50 · #8 (**permalink**) 08-14-2009, 09:55 PM

36.0000 - German Mil (1989)

http://sites.google.com/site/okiesam...ycle-22/360000

kkn50 · #9 (**permalink**) 08-14-2009, 10:03 PM

33.475 - Russian (1989)

334750 (OkieSam)

kkn50 · #10 (**permalink**) 08-14-2009, 10:08 PM

38.225 - Russian (1989)

382250 (OkieSam)

kkn50 · #11 (**permalink**) 08-14-2009, 10:14 PM

29.5500 - This is a ham operator discussing the 1989 California earthquake that had just occurred.

295500 (OkieSam)

1989 Loma Prieta earthquake - Wikipedia, the free encyclopedia

mancow · #12 (**permalink**) 08-14-2009, 11:03 PM

Crazy, sounds like Transcrypt 430 or 460 scrambling. It's definitely their flashcall signalling. RayAir could probably pull some audio from it. He's good with that stuff.

Quote:

Originally Posted by kkn50

31.9800 - 1989/09/14 - Fishermen, one clear and one using time domain scrambling.

319800 (OkieSam)

kkn50 · #13 (**permalink**) 08-14-2009, 11:06 PM

He did and corrected my description: "That's Selectone ST-25 rolling code frequency inversion."

Quote:

Originally Posted by mancow

Crazy, sounds like Transcrypt 430 or 460 scrambling. It's definitely their flashcall
signalling. RayAir could probably pull some audio from it. He's good with that stuff.