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[aprssig] Object Timestamps and 111111

la3qma at aprs.la la3qma at aprs.la
Sun Dec 12 15:45:51 UTC 2010

Quoting "Lynn W. Deffenbaugh (Mr)" <ldeffenb at homeside.to>:

> Greetings to the APRS knowledge repository,
> Where can I find documentation on the use and specification of the
> timestamp that appears in APRS Object packets?  I've read Chapter 11 of
> aprs101.pdf and understand the formatting of the timestamp ,but not the
> use nor the (apparently special) 111111 timestamp.
> There seems to be a discrepancy (bug?) in the interpretation of various
> timestamp formats in the Kenwood line of APRS radios and I'm trying to
> ensure that my APRSISCE/32 software is, in fact, generating valid
> object packets.
> Any pointers to the definition of the timestamp on object packets,
> especially the spec of the 111111 special value (which the newer
> Kenwoods appear to accept as a z, but not an h) and what it means.
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

As i think this originated on the TH-D72 yahoogroup i can then confirm  
that there is a bug in both TM-D710 and TH-D72.

The following is ok on TH-D7, TM-D700 and TM-D710 (probably VX8 and  
TH-D72 too)
;GB3LA    *135626z5522.65N/00345.22Wr145.7125MHz T103 -060 GB3LA S Scotland

The following is only ok on TH-D7, TM-D700 and VX8:
;GB3LA    *135626h5522.65N/00345.22Wr145.7125MHz T103 -060 GB3LA S Scotland

Kai Gunter

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