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G0FTD > SWL 12.03.07 17:42l 24 Lines 662 Bytes #999 (0) @ WW
BID : 030154070PZT
Read: DK5RAS GUEST OE6DFD DL1BAH
Subj: An HF mystery solved.
Path: DB0FHN<DB0MRW<DK0WUE<DB0RES<ON0AR<ZL2BAU<GB7MAX<GB7PZT
Sent: 070312/1639Z @:GB7PZT.#24.GBR.EU [Kidderminster] #:15403 XSERV410h
Date: Mon, 12 Mar 2007 16:39:20 +0000
From: g0ftd@gb7pzt.#24.gbr.eu (Andy)
To: swl@ww
Subject: An HF mystery solved.
If you spend a good deal of time playing on the HF bands you will have heard
all sorts of noises. One probably more than most will be a Russian
ionosonde "chirpsounder".
It doesn't sound anything like the usual ionosonde and can easily be mistaken
for locally generated crud !
Have a look at www.signals.taunus.de and scroll to the chirpsounder section.
The link is called RUS-CHIRP.
Then download the CIS chirpsounder .wav file (76.6Kb).
The chances are you've heard it many a time without even realising it !
- Andy -
G0FTD @ GB7PZT
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