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Amateur Radio Data Transmissions - For discussion of all modes used to send data such as APRS and packet.

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Old 02-06-2018, 4:20 PM
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Default GPS receiver for APRS

I was wondering what the best GPS receiver would be to use for aprs and if I needed anything else besides that and a cable to connect it to the radio. I have a Yaesu 8900R

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Old 02-06-2018, 4:51 PM
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You'll need a TNC or a dedicated APRS tracker.

The TNC could be something like a Kantronics KPC3 or KPC3+ (don't buy new as you can usually find used ones for less than $100).

The APRS tracker could be a TinyTrak4 from Byonics or an OT3m from Argent Data.

No matter which way you go, you'll need a GPS receiver that outputs NMEA0183 data over an RS-232 serial port. Both Byonics and Argent Data have suitable GPS receivers.
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Old 02-06-2018, 4:55 PM
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Quote:
Originally Posted by W9BU View Post
You'll need a TNC or a dedicated APRS tracker.

The TNC could be something like a Kantronics KPC3 or KPC3+ (don't buy new as you can usually find used ones for less than $100).

The APRS tracker could be a TinyTrak4 from Byonics or an OT3m from Argent Data.

No matter which way you go, you'll need a GPS receiver that outputs NMEA0183 data over an RS-232 serial port. Both Byonics and Argent Data have suitable GPS receivers.
I was looking at a Garmin Nuvi 350,I wonder if that would crank out the NMEA0183 data....
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Old 02-07-2018, 5:54 AM
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Some of the Garmin nuvis can communicate with the outside world using what Garmin calls their Fleet Management Interface (FMI). Argent Data cracked the FMI code and the Argent Data Tracker2 and Tracker3 line can connect to a Garmin nuvi with FMI to get the lat/lon strings from the GPS receiver. The Garmin nuvi 350 is the best of the bunch, but they are pretty old these days so I'm not sure I'd spend a lot of money on one.
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Old 02-07-2018, 2:22 PM
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Quote:
Originally Posted by Trainguy1997 View Post
I was looking at a Garmin Nuvi 350,I wonder if that would crank out the NMEA0183 data....
You are going to need the fleet management cable for the Nuvi 350......
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Old 02-08-2018, 7:54 PM
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You are going to need the fleet management cable for the Nuvi 350......
I'm not great with technology, but other than the fleet management vs me what else do I need to set up aprs

Where can I get the cable also?

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Old 02-08-2018, 8:36 PM
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I have one of these for various uses and I did set it up for APRS a few years ago - works well.

https://www.ebay.com/itm/PGM-111-USB...-/291715470446
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Old 03-31-2018, 6:00 PM
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Default Gps puc question

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I have one of these for various uses and I did set it up for APRS a few years ago - works well.

https://www.ebay.com/itm/PGM-111-USB...-/291715470446
Martin,
How did you convert the PS2/USB to DB9? I was looking at some similar GPS receivers. Did you cut the end off the wire, and if so what is the wiring diagram? I don't want to have to spend more money for the PS2 to DB9 cable when the DB9 plug is a cheaper option.

Thanks,

Matt
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Old 03-31-2018, 8:26 PM
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If I were you, I would get the Garmin Nuvi 350 and the Fleet Management Cable with the tracker from Argent Data. When I purchased my gear, they were on top of it and had everything right! Programming was easy and I had mine running within an hour. It has yet to fail me nearly 8 years later...

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-Frank C.
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Old 04-04-2018, 6:31 PM
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Another thought in a slightly different direction, If you are an Android user, you can go with the Mobilikd TNC2, and APRS droid on your phone or tablet. This will connect via Bluetooth to your Android device, and use it's built in GPS. The Mobilinkd offers ready made cables to connect to various mobile and handheld radios, If you prefer to save a few bucks and wire the cable yourself, they provide the pinout in the user manual which is available online.

This is a nice compact unit can be rubberbanded to the back of a Baofeng or connected to a mobile.
I just acquired a GM300 that I am going to connect mine to as a dedicated APRS radio in my suburban.
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Old 04-04-2018, 11:21 PM
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Sorry for the delay. Go to this web page...

http://robotics.ee.uwa.edu.au/course...PS-polstar.pdf

..and you'll see the PS2 plug info - but you dont need that. The EBay ad shows that it includes the converter to USB.

However you can do it yourself if you want to. It's not hard to cut the cable and get the power from a keyboard socket or a USB socket and send the feed into a DB9 connector - I can't remember the pins offhand but it's the standard receive and ground pins. You may need to download a driver called "PL2303". I can still use a very old laptop for the job - there is a very interesting programme called 'visual gps' which display all the information coming down in the NMEA data stream
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Old 04-05-2018, 12:51 AM
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Quote:
Originally Posted by majoco View Post
Sorry for the delay. Go to this web page...

http://robotics.ee.uwa.edu.au/course...PS-polstar.pdf

..and you'll see the PS2 plug info - but you dont need that. The EBay ad shows that it includes the converter to USB.

However you can do it yourself if you want to. It's not hard to cut the cable and get the power from a keyboard socket or a USB socket and send the feed into a DB9 connector - I can't remember the pins offhand but it's the standard receive and ground pins. You may need to download a driver called "PL2303". I can still use a very old laptop for the job - there is a very interesting programme called 'visual gps' which display all the information coming down in the NMEA data stream
Thank you for the information.
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