[time-nuts] NAA experiments as a reference

Jim Lux jimlux at earthlink.net
Sat Sep 13 12:01:25 EDT 2014

On 9/13/14, 7:33 AM, paul swed wrote:
> Charles I literally just sat down to do some math. What you say is the same
> thoughts I have. The information I have on NAA says that for 200bit msk its
> a total of a 100 hz shift +/-50 Hz. That makes no sense I would think it
> would be at least +/- 100 Hz. They had in the past run a 100 bit msk. I
> somewhat wonder about the documentation accuracy in the tracor manual and
> the net. Hey it has to be true on the internet.

As I recall, MSK is FSK with the shift being half the symbol rate. I 
assume they're doing gaussian minimum shift keying GMSK.  The mod index 
is typically 0.5 with gmsk.

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