[time-nuts] M12+ phase jump due to WAAS/EGNOS DGPS corrections?

[Brooks Shera]

I received the note below from Ernie Peres in Germany which reports an effect consistent with an occasional phase jump in the 1 PPS output from a M12+ rcvr, perhaps related to DGPS corrections.  The DGPS sats Ernie sees from his location are part of the EGNOS system.  

The DGPS sats visible to me (sats #35,47 according to my Garmin V) are part of the WAAS system and I haven't noticed the phase jump effect with an M12+.  

 I wouldn't  really expect to since the M12+ is not WAAS/EGNOS "enabled".  

However, something more subtle might be occurring.   I wonder if anyone else has noticed such an affect or has any ideas.

Brooks



------------------note from Ernie----------------------------
.....I am using  a Motorola M12+ timing  GPS eng  board to drive the W5OJM controller board and  the high prec OCXO. I have also bought a Garmin V handheld unit just for playing around and noticed that it displays " new " sats.....ie nbr 33 and 37. but the signal bar for this sats were gray instead of black on the display.
Later I learned that this new sats are the  AOR-E sat nbr 120 and the ARTEMIS sat nbr 124, and also noticed that sat 33 is transmitting DGPS signals because the 
GARMIN  V  /  WAAS enabled / receiver displayed  " D " letters in the signal strength bar. Also the TAC32 program displayed DGPS received and  station ID "0000" age 0.........

When I see this sats on the GARMIN receiver the same time your GPS controlled board indicates a phase jump... I am using DG4RBF software to plot EFC and phase error......
Did you heard similar situation?
I do not know if this 2 sats are visible from the US but it should be because the position from my home / Frankfurt/M,  Germany/  AOR-E  EL... 28 deg. and    
AZ.... 214 deg.   the 37 sat ARTEMIS nbr 124  El...27 deg      AZ....164 deg.

Also I have built other type of GPS controlled OCXO   the so called "analog" version where the  JUPITER GPS eng board 10kHz signal is PLL-ed the OCXO, and
also noticed  on the EFC voltage a small variation....

Did any other person reported similar problem? 
Based on the internet info this WAAS not yet fully operational. It is just a testing procedures ????????   or what is the future of this kind of OCXO locks?
Best regards,

Ernie    HG5ED
------------------------end of Ernie---------------------------