[aprssig] GPS for TM-D700

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Mon Oct 16 15:43:40 EDT 2017

I'll second the BR-355 recommendation. You'll also find the pictures at 
the following link helpful if you go that route.


Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 10/16/2017 3:26 PM, Stephen H. Smith wrote:
> On 10/16/2017 1:38 PM, al wolfe wrote:
>>      Been away from APRS mobile for a while. What is a good GPS
>> receiver to use with the D700 mobile? I see lots of GPS modules now
>> for drones as well as micro controllers. In the old days used a garmin
>> OEM unit.
>> Al, k9si
>> _______________________________________________
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>> aprssig at tapr.org
>> http://www.tapr.org/mailman/listinfo/aprssig
> Note that you MUST have a RS-232 unit for this application; not a TTL 
> or USB-intefaced device.
> I have used many many of the Globalsat GlobalSat BR-355S4 devices with 
> great success.  This is the SERIAL version of the popular BU-323   
> USB   mini-hockey-puck device.  These are currently available on 
> Amazon for USD $27 .
> <https://www.amazon.com/GlobalSat-BR-355S4-GPS-Receiver-Black/dp/B00AMAJFUO/ref=sr_1_3?ie=UTF8&qid=1508181021&sr=8-3&keywords=globalsat+bu-353-s4>
> These devices come with a mini-DIN connector on the end of a 6-foot 
> cable that was intended to mate with one of two accessory cables. One 
> was just wire terminated in a DB9 serial plug. The other terminated in 
> a serial<-->USB converter dongle.   Just chop the DIN plug off, strip 
> the wires and splice them to a cable with the 2.5mm GPS connector plug 
> for t he D700.
> Note you will need a 5VDC (*not* 12VDC !!!) power source for the GPS. 
> (Additional contacts in the DIN connector were  +5VDC IN & 
> COMMON.)     You might cannibalize an old lighter-socket cell-phone 
> charger. These are often available at dollar stores (or hamfests)  if 
> you don't have one lying around.  Just be sure it is 5 VDC, not 3.3 
> VDC or some other odd voltage.
> ------------------------------------------------------------------------
> Stephen H. Smith    wa8lmf (at) aol.com
> Skype:        WA8LMF
> EchoLink:  Node #  14400  [Think bottom of the 2-meter band]
> Home Page: http://wa8lmf.net
> Live Off-The-Air APRS Activity Maps
> <http://wa8lmf.net/map>
> Long-Range APRS on 30 Meters HF
> <http://wa8lmf.net/aprs/HF_APRS_Notes.htm>
> _______________________________________________
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> aprssig at tapr.org
> http://www.tapr.org/mailman/listinfo/aprssig

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