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[aprssig] what are the currently available inexpensive GPS suitable for APRS

Stephen H. Smith wa8lmf2 at aol.com
Thu Oct 27 21:54:01 UTC 2005


kd4moj at kd4moj.org wrote:

>On Thu, 27 Oct 2005, Stephen H. Smith wrote:
>  
>
>>But then using KPC3s as trackers should be discouraged anyway, since 
>>they only transmit the long, air-time-wasting non-compressed raw NMEA 
>>strings.   The main value of the dedicated GPS port is in computer 
>>installations where it avoids the kludgy HSP port sharing gizmos to get 
>>both TNC RX and GPS data into a single serial port on a laptop. 
>>    
>>
>
>   Only if you want to POSIT and have no messaging capabilities. Nothing
>like sending a message to a ham taveling through your down only to realize
>that he is using a Tinytrak or one of the variants and can't
>"talk" to anyone. I'm not slamming them (I have one of scott's
>opentrackers) just that the KPC3/+ is a useful tool for messaging.
>
>  Just my 2 cents...
>
>
>  
>

If you are messaging, you are using a program on an external computer 
which (hopefully) can format and send short-form APRS-format or even 
shorter Mic-E compressed-format posits.   You would be using the KPC3's 
GPS passthough feature to the main serial port connected to the 
computer,   but not it's "dumb tracker" stand-alone beaconing 
capability.  (The program such as UIview, Xastir, or APRSplus would be 
handling the position beaconing, not the TNC's firmware.)


Stephen H. Smith    wa8lmf (at) aol.com
EchoLink Node:      14400    [Think bottom of the 2M band]
Home Page:          http://wa8lmf.com

"APRS 101"  Explanation of APRS Path Selection & Digipeating
  http://webs.lanset.com/wa8lmf/DigiPaths

Updated APRS Symbol Chart
  http://webs.lanset.com/wa8lmf/miscinfo/APRS_Symbol_Chart.pdf   

New/Updated "Rev G" APRS     http://webs.lanset.com/wa8lmf/aprs
Symbols Set for UI-View,
UIpoint and APRSplus:


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