SDS100/SDS200: SDS100 GPS Data Interface?

I've been looking around for the answer to a simple question. What data interface is used to connect a GPS with the SDS100?

I have looked at the Uniden solutions:
GPS:
https://www.uniden.com/shop/communication/serial-gps-receiver/
...and the cable:
https://www.uniden.com/shop/communication/gps-usb-cable/

Back in the "old days", this is how Uniden showed connecting a GPS to a scanner:

ConnectingAGpsReceiver < UnidenMan4 < TWiki
...the GPS show in the diagram used a serial interface that was connected to a DB9 connector. We needed a simple cable to route the serial signal from the GPS into the proprietary connectors on our radios.

I have a similar Garmin GPS that I'd like to see if I could press into service for my SDS100, and just like the picture, it has a serial interface that is presented in a DB9 connector. The specific model is a GPS18x PC:
https://buy.garmin.com/en-US/US/p/27594

Now I see the Uniden GPS adapter cable accepts a din connector and presents it to the SDS100 via a miniUSB. Is it simply routing the serial signal to a specific pin? Or is there some sort of serial to USB conversion embedded somewhere inside the cable?


Anyway, thanks for reading this far. I may forget all of this and just get the GPS cable and another GPS from Amazon. They have a model for $30 that appears to work with Uniden. Anyone else try this out?

https://www.amazon.com/GlobalSat-BR...TF8&qid=1537387400&sr=1-8&keywords=uniden+gps

b52hbuff said:

Anyway, thanks for reading this far. I may forget all of this and just get the GPS cable and another GPS from Amazon. They have a model for $30 that appears to work with Uniden. Anyone else try this out?

https://www.amazon.com/GlobalSat-BR...TF8&qid=1537387400&sr=1-8&keywords=uniden+gps

Click to expand...

No, this is the first time I've seen this. If the question doesn't get answered and you go ahead and buy this, please make a post letting those of us, or me, know how it works.

Sent from my SAMSUNG-SM-G930A using Tapatalk

There's a whole thread in this forum (a few pages back) talking about using the BR-355/S4:

How to make a GPS for the SDS-100 $42

Thank you for the info end the link. I miss a lot of the threads due to my vision or lack of it and I appreciate that link!

I bought the GPS unit about 2 years ago for my BCD436HP and bought the new cable needed when I got my SDS100. I was saving up to get the internal GPS unit installed after my trip a month ago but as we know that's no longer available. $30 is a good price. If I wasn't saving for the battery charger right now, I probably go ahead and buy one for use on my 436 so I could use it and my 100 at the same time on road trips. Hopefully they'll stick around for a while and I can get one later.

Brian
COMMSCAN

BigWonton said:

There's a whole thread in this forum (a few pages back) talking about using the BR-355/S4:

How to make a GPS for the SDS-100 $42

Click to expand...

Sent from my SAMSUNG-SM-G930A using Tapatalk

BigWonton said:

There's a whole thread in this forum (a few pages back) talking about using the BR-355/S4:

How to make a GPS for the SDS-100 $42

Click to expand...

Thanks so much. This is exactly what I was looking for. The SDS100 has a custom wiring for the miniUSB.

Since I am more handy with a credit card than a soldering iron and a heat gun, I'll probably go the commercial route and buy the GPS and cable. Given that the application is for a mobile environment, I trust Uniden more than my home made skills to make a robust adapter.

letarotor said:

No, this is the first time I've seen this. If the question doesn't get answered and you go ahead and buy this, please make a post letting those of us, or me, know how it works.

Click to expand...

Just got BR-355-S4 today. Plugged the GPS into the Uniden BC-UTCG, and everything worked like a charm. Also removed GPS and the BC-UTCG charged my radio.

Just so everything is wrapped up in one post...

Here is a link to the ScannerMaster site. They have the cables in stock and they have a nice video showing how to make the connection.
https://www.scannermaster.com/Uniden_Bearcat_GPS_Adapter_Cable_BCD325P2_SDS100_p/10-731909.htm

Here is a link to the GPS on Amazon:
https://www.amazon.com/gp/product/B00AMAJFUO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

And here is a link to the manufacturer's product page:
BR-355-S4

...you can get specifications and a PDF copy of the manual.

One quick update on my post, did a little searching for the Uniden product. Found a copy of the manual here.
http://www.uniden.info/download/ompdf/BC-GPSKom.pdf
...interesting to note that the Uniden product has an older version of the GPS chipset/receiver (SiRF Star III vs. SiRF S4)