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My TX-20 is nothing special, apart from that I was able to remove it from where it spent it's working life when the business downsized.

I've given it a good clean, and solved a couple of little issues (like the ribbon not advancing due to the motor being stuck).

I've also taken a raspberry pi and connected it to the line and bell relay terminals of the TX-20, and written a small program. Now through RPITX whenever I am in paging range (at home) I will get a notification when someone calls the machine or rings the bell.

Old technology is at it's best when you can find a use for it!

Hi Nick,

Brilliant Idea!

Kind regards
Michael

Gesendet von meinem 2109119DG mit Tapatalk

Cool idea.
What system and frequency do you use? POCSAG?
Would be interesting to get some more detailed information.

Yeah, POCSAG with rptix.

I use NodeRed to handle the flow. I use an input node to monitor the state of the relay, then calls a function when that state changes. That function runs the pocsag script: var command = 'echo "0380717:' + incomingMessage + ' AT:' + timeFormatted + '" | sudo /home/pi/rpitx/pocsag -f 148037500 -r 512' "

Telecom Australia pagers used VHF, 146-149 MHz, but I have used a Metromedia pager on 454.175MHz with Rptix with good success too.

The antenna is only a small coil of wire on GPIO 18 (Pin 12).