3.a.9 CoPilot GPS, model: TRAV1220B. RS-232 and w/PS-2 power.
I searched for a simple GPS for my needs and found it. Presumably, it sailed on a boat, for a long time.
As usual, it's more interesting to find out what's inside, than to check if it works.
Nothing unusual. Global Positioning System (GPS) Receiver based on Rockwell R6732-13 chip that works with GPS antenna and tons of additional components on the bottom of the board. This takes power (+5V) from the PS-2 connector, so we can assume that it is designed to work with a computer. Only 4 wires: RX,TX, PWR & GND.
I'm not sure that it can work from +12V directly (without smoke and fire), so 5 volts (from PS-2 or USB port) is what is needed. According to datasheet Rockwell requires +5V, 0.195A (0.23A max).
All GPS do the same, take sat. signals and do calculations inside. Output data comes at 4800 baud. Any old PC, that has real RS232 port, can read this output. Tiny Core Linux, in my case, just because it is compatible with them.
All you need to do is configure serial port to speed of 4800 :
stty -F /dev/ttyS1 4800
and copy GPS data to the screen, using cat :
cat /dev/ttyS1
Simple output on the right window.
Surprisingly, after 30 years, it has not forgotten how to work.
And, it's it.
Added.
1. stty -F /dev/ttyS1 4800 & allows you to send commands to the GPS, in the same terminal screen. All the same, but it's a little more convenient than: echo "abcd_and_some_other_data_to_GPS" > /dev/ttyS1
2. If you are going to work with this, then some help can be found on this page.
*** Let me know if you find inaccuracies, or have something to add. My address below.