Re: [perseus_SDR] Help me ID odd wideband signal [1 Attachment]
- Hi Lasse,this is over the horizon radar. They always use the "muf" maximum useable frequency ( as resolution is better the higher the frequency is ) and they are always exactly on frequency transmitting in most cases 400 coherent carriers spaced at 50Hz each, giving a 20kHz bandwidth. You can see the carriers with Perseus, if you increase resolution bandwidth or have a look at the secondary window. You can even use this to calibrate your receiver, in your example you could use the " center carrier " at 21010,000 kHz.73,Werner2013/1/31 clement F59465 <f59465@...>[Attachment(s) from clement F59465 included below]--
2013/1/31 Lasse Moell <lasse.moell@...>[Attachment(s) from Lasse Moell included below]
Spending the day at home with a running nose, I was listening on HF when
I suddenly found this wide band signal on 21 MHz
It lasted some 30 minutes. Anyone know what it might be?? Could see
slight fading from time to time.