FSK
Posted: Thu Oct 26, 2017 10:00 pm
Hi all,
I am a bit of a newby into HF so that’s why I’m asking possibly something silly here.
I was toying around with some DSC tools, started two instances of YaND on 490 kHz and the other on 518 kHz. Because I wasn’t sure on which “side” of the carrier the signal would come I put both receivers on DSB, hoping the AFC of YaND would correct my possible misunderstanding of FSK signals. I then connected the YaNDs with SDRUno using two VACs (Line 1 and Line 2) and after 24 hours had nothing but garbled characters....
So yesterday night I waited for a signal to come up and noticed that my IF (on 518 kHz) was right in the middle of the FSK signal. I tuned 2 kHz lower and there it went spilling out all kinds of information about oil rigs without lights et cetera.
My question is what kind of modulation settings must I use in SDRUno to be able to set the “official” frequency (like 490) instead of 488 and receive a workable FSK signal?
I checked out some of the more expensive SDRs (like TitanSDR) and they seem to have an FSK “button”, which made me wonder and I thought I should ask on this forum.
Many thanks upfront!
Wim
I am a bit of a newby into HF so that’s why I’m asking possibly something silly here.
I was toying around with some DSC tools, started two instances of YaND on 490 kHz and the other on 518 kHz. Because I wasn’t sure on which “side” of the carrier the signal would come I put both receivers on DSB, hoping the AFC of YaND would correct my possible misunderstanding of FSK signals. I then connected the YaNDs with SDRUno using two VACs (Line 1 and Line 2) and after 24 hours had nothing but garbled characters....
So yesterday night I waited for a signal to come up and noticed that my IF (on 518 kHz) was right in the middle of the FSK signal. I tuned 2 kHz lower and there it went spilling out all kinds of information about oil rigs without lights et cetera.
My question is what kind of modulation settings must I use in SDRUno to be able to set the “official” frequency (like 490) instead of 488 and receive a workable FSK signal?
I checked out some of the more expensive SDRs (like TitanSDR) and they seem to have an FSK “button”, which made me wonder and I thought I should ask on this forum.
Many thanks upfront!
Wim