[aprssig] Timestamp Questions

Rud Merriam k5rud at arrl.net
Fri Jun 10 13:00:05 EDT 2011

Lynn - Yes, I have the 101 doc and just totally missed the mention of 
zulu in the description of 'h' time. Then, since I was buried int 
timestamps, forgot that messages don't have them.

Guido - thanks, I have been looking at the FI raw. I captured a file of 
messages using telnet, also.

- 73 -
*Rud Merriam K5RUD
Emergency Coordinator
/Montgomery County ARES® <http://www.wa5eoc.org/> /
* /Mystic Lake Software <http://mysticlakesoftware.com/>

On 6/9/2011 6:40 AM, Lynn W. Deffenbaugh (Mr) wrote:
> If you're going to write a new APRS client, you need to get a copy of 
> aprs101.pdf and read it, study it, read it, and study it some more.  
> Most of your basic questions will be answered therein, like the fact 
> that messages have NO timestamp!  Also, on page 22 (32 in acrobat) it 
> says:
>> Hours/Minutes/Seconds (HMS) format is a fixed 7-character field,
>> consisting of a 6-digit time in hours, minutes and seconds, followed 
>> by the h
>> time-indicator character. For example:
>> 234517h is 23 hours 45 minutes and 17 seconds zulu.
>> Note: This format may not be used in Status Reports.
> Note the ZULU mentioned on the next to last line.
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
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