wrote in message
oups.com...
For the feds, the band can be fixed or any mobile except aero. For the
rest, it's fixed.

I found another signal with the same modulation
at 7991.5 kHz. It is transmitting now at 1545 UTC
while there is nothing at 15937.5.

--
rb

wrote:
I did a FCC search, but found nothing. The NTIA allocation just says
fixed. I'll check the redbook.


Ron Baker, Pluralitas! wrote:
It is transmitting right now.

I regularly pick up an unusual data signal
at 15937.5 kHz (USB). It is 7 fsk signals stacked
in frequency. They are 170 Hz shift and there
is 170 Hz between them. The Baud rate is 75.
All seven channels send the same bit stream
but offset in time by as much as 6.66 seconds.
The bits show a flat autocorrelation.
Anybody know what this is/ who is sending
it?

--
rb