[Heathkit] Digital SB-303?

[TimC]

Back in January of this year ebay had another SB-303 with a digital display
looking very much like the official rare Heathkit model.

It was from DMK Protronics Inc. Buckley WA  model 303. Looked quite nice
replacing the slide rule dial and includes 10-turn type pots to calibrate
each of the 9 bands.

Reading 13.0mhz on the 20 meter band hopefully is due to a bad connection to
the LMO, HFO or BFO.