If I remember, the DG-5 connected to three RCA jacks. It took the VFO
frequency, the oscillator for the band, and I guess the oscillator which
varied with the selection of USB, LSB or CW.
The three were combined to show your operating frequency.
I never had one of those and I wonder if it read correctly when you had
the RIT turned on.
Are there any talking frequency counters available - new or on the used
market ?
Markin Pittsburgh