[time-nuts] GPS System Message (was: TV Signals as a frequency reference)

[Scott Newell]

At 01:21 PM 3/31/2018, Mark Sims wrote:
>Or on the GPS/GNSS signals...  I was verifying Lady Heather's 
>support for the old SV6/Palisade/Acutime receivers and came across a 
>mention of the "GPS System Message" command.   It is requested by 
>TSIP packet 0x28 and returns

I dug into this a while back, download several years with of archived 
data, and decoded the messages. Everything looked like gibberish.


# GPS system message:X4W-BZXE3/HPU77G49PU1V

Yep, that's the kind of stuff I saw.

Found some from a while back:

w UPR2GYSUZD5V:TK3E26MA
w+5DH4UQWN8AVCRAW.QXIVB
w-O+ZX6R/HU9.W /P70HV7
w3-BE-8"6VIE/5A20 W+/N.
w4F.44-8/WMPED69FGXYRJ1
w4JTW1S9QAI.6JS54JGUIZ
w7BEI+9IJW2:E6W36VCU3Z
w7G2NKRQN16"C0-46/S3U9
w7H48BKS'B02TZ.MC3HEU7H
w8E8K8"Z.T2F98KLJLW/58X
w91D1H5FZQJ+/V92XF7AERA
wCPSX.SF/0NWY+AEXFY0RQG
wE.TS-ZM3XFYZG2LW.G97+
wEN37J9F5CW1RQQ377FG'U6
wF:Y WA0WLTWFV/XK-RXJE
wKC2JKG+2X1V1 ZBZD6R4K
wKF4H7SW NC-J1ES6M77J
wL/R:BBGD5X.567A+76R
wN07DH.IGFII J5PK0DSR5
wO"70PPO'IDLQ2:+.99URQB
wOLDX6NGM5KNF7Q-B85MTS"
wP62HO"EP6/G7WDOXRLBE.
wQ4UY+EX+R0D76IJI-/7JQ+
wR0ON69F30VS3CWLX3 0 T
wRG W7VCLD/73/3UIVT"8T'
wSE+HPL/7GZB1S6KFVS:1
wU300IZO.40R3EG- HW:'1
wUD /V5Y5NLT-9KGLC46B8G
wVKOVQ0XDS'1BP2C8"M5JA/
w9NVC2SC'9C7QIQE+ W+OT/
wF2JJJIR7/GE/M+/VUNB 8
wTRME71QU6J5/WWEGR5UOH.
wV615HC99364:A0/P"X HE2
wYH'X1--WO685-0HBTV7 ZL