Used a Motorola HT-200 with an added DTMF encoder to place "autopatch" calls in '77 after getting tech ham ticket.
Used WR5ABY 146.88 Dallas/DARC and WR5ABE 146.(don't recall freq) in Irving at the time to make those 'calls' ...
Motorola HT-200 portable radio (model run from 1960 - 1970 or so): mfwright.com/mikeht220/ht200.html
Motorola HT-220 shown in right-background ...