[time-nuts] Question on GPS receiver selection for 1pps

[SAIDJACK at aol.com]

Hi Paul,
 
"good enough" is in the eye of the beholder..
 
The M12M receiver can achieve 2ns rms. So 300ns seems very bad.
 
Some early units had up to 1000ns error, so 300ns is quite good in that  
context.
 
Anything below 30ns from the GPS (with sawtooth correction) should be  
excellent by today's standards..
 
bye,
Said
 
 
In a message dated 11/17/2010 15:02:15 Pacific Standard Time,  
paulswedb at gmail.com writes:

When I  look at sparkfun as an example there must be 30 plus receivers with 
a
crazy  65 channels.
New receivers seem plentiful. About the only data I see is the  1 sec pps is
300ns as an example and cep is 2.5cm.
Is that good enough  for a gps locked oscillator?
Does it matter since the system is locked over  many seconds?
Thanks in advance appreciate your help and  comments.
Regards
Paul
WB8TSL