3 ms·
This entire video is HAM repeater patches[1] with different automation. One key thing to note in the video is that placing a call to the mobile unit required k
by avidiax 4y ago
This entire video is HAM repeater patches[1] with different automation.
One key thing to note in the video is that placing a call to the mobile unit required knowing in advance what cell the unit would be in.
On the upside, they could ring a particular unit, meaning there must be a codewheel in the mobile unit to selective ring just that one, which is pretty sophisticated. That's roughly as complicated as doing pulse dialing.
[1] https://en.wikipedia.org/wiki/Autopatch https://en.wikipedia.org/wiki/Autopatch
- pugworthy 4y agoI was going to say, this looks like patching. My dad was doing this in the 70's (in the car) I believe.
- dn3500 4y agoThe codes were five digits, and transmitted as FM dial pulses on 600 and 1500 cycles. The receiver had a toothed ratchet wheel with five pins that would follow the dial pulses. It was entirely electromechanical.