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Strange Tones From Alaska
- Thread starter cc333
- Start date
Likely something from the NHK transmitter in Japan, as I recall... but without a recording its hard to say what you heard.
you cant post audio here. upload to google drive or box or dropbox or something and post the link
The time of your post is roughly around the time NHK Radio 2 starts up each morning (Japanese time) with ~5 minutes of tone and ~10 minutes of musical interval signal.
Do the tones sound like this tinkly music?
No, it didn't sound like that.
Here is the recording I made:
mega.nz
Hopefully Mega.nz works for everyone.
c
Here is the recording I made:
7.88 MB file on MEGA
Hopefully Mega.nz works for everyone.
c
No, it didn't sound like that.
Here is the recording I made:
7.88 MB file on MEGA
Hopefully Mega.nz works for everyone.
c
Sounds like interference from ham radio operations, which take place at the same location of this SDR
Sounds like RFI. Too droning to be a ham mode, and 738 kHz is a long ways from the nearest ham band. Could be overload from a local station, depending on where the SDR in question is located.
It's definitely not a heterodyne from a 9 kHz channel station in Asia, heterodynes would be more singular in pitch.
It's definitely not a heterodyne from a 9 kHz channel station in Asia, heterodynes would be more singular in pitch.
I seem to remember that sound being RTTY (radioteletype) from years past
Sounds more like FAX to me. No idea who'd be transmitting it.
I think most of the DGPS stations on LW are gone. I used to hear about 3-4 of them, depending on conditions, even barefoot on my DX-398. Not any more. But they did sound a lot like RTTY.
It's certainly low speed data of some kind.
Fax seemed to have more of a "whiny airplane" sound as I recall.
But who can forget the bagpipes?
I remember those "whiny airplane" sounds on Shortwave. I remember asking what they were. They were not on the Shortwave Broadcast Bands. I asked what they were and heard everything from some kind of atmospheric noise, to transmissions from outer space, to jamming stations in the Soviet Union. Not one person said anything like some kind of digital or fax signal. I remember the WWV digital signal on the 3s and 8s every five minutes. I think I remember the "bagpipes", but thought they were just something they had before a broadcast began, like the Holland and Radio South Africa had. And of course the Russian Woodpecker and the five number voice sequences.
radio netherlands chime interval signal
Those chimes are really out of tune.
radio netherlands chime interval signal
Those chimes are really out of tune.
Help Brian identify this 1970s era interval signal
[Mystery solved! Click here to read the update.] Many thanks to SWLing Post contributor, Brian (W9IND), who writes: I want to thank you for stirring a memory that I never thought I’d relive – even …
swling.com
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