[aprssig] APRS spec questions

Andrew Rich vk4tec at internode.on.net
Sat Apr 29 23:04:26 CDT 2017


Thanks Ken 

The $GPRMC affords better accuracy I have discovered.

What would a time stamp less packet with course and speed look like ?


VK4TEC-9>APZ001,TCPIP*:!xxxx.xxS/xxxxx.xxE> <?>

Cheers

Andrew 




> On 30 Apr 2017, at 11:35 am, Kenneth Finnegan <kennethfinnegan2007 at gmail.com> wrote:
> 
> On Sat, Apr 29, 2017 at 5:56 PM, Andrew Rich <vk4tec at internode.on.net <mailto:vk4tec at internode.on.net>> wrote:
> 1. Send NMEA data $GPRMC - is the UTC time stamp in the NMEA message used at all ?
> 
> Don't send NMEA position packets. They should be deprecated. 
>  
> 
> 2. Course and Speed - is the time stamped position report the only report that supporst a course and speed ?
> 
> The 000/000 data extension for speed and heading is supported on all types of position packets. 
> 
> --
> Kenneth Finnegan, W6KWF
> http://blog.thelifeofkenneth.com/ <http://blog.thelifeofkenneth.com/>
> 
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