UHF CONVERTER
Walsco 2000

   

The Walsco Electronics Company was a bit unusual in that it was based in Los Angeles, at a time when the majority of electronics companies were in New York or Chicago, and most TV stations were east of the Misssissippi. One source indicated that it was founded from the Walter L. Scott Co., which suggests that it might have had a connection to the Scott of high-fidelity fame. However, there was a long history of television pioneering in California, so it continued a proud tradition.

Appearing in 1954, the model 2000 appears to be the only UHF converter that Walsco made. It came in two cabinet colors: a bakelite cabinet version in the usual "mahogany" brown, and an otherwise-identical white Plaskon version. The large round gold reverse-painted dial gives it a substantial appearance. The circuit uses the usual 6AF4 oscillator and a 6BK7 IF amplifier arrangement, with a selenium rectifier for the B+. However, it is the only UHF converter I know of that has a "click-stop" tuner. The construction is very much like VHF tuners of the period, but each stop allows it to tune 10 channels, by adjusting the "fine tuning" control between, say, channel 20 and channel 30. A somewhat complex double dial-string arrangement transfers motion from the knob to the tuner and its dial.

Updated May 28, 2013