Tuning unit with bandswitch for high frequency receivers

Details Tuning unit with bandswitch for high frequency receivers Tuning unit with bandswitch for high frequency receivers

1976-10-26

1978-06-27

Gensler, Paul L.

Tuners

Push button and/or lever-type mechanically operated tuner

74 1085, 74 109, 334 15, H03J 532

Patent

active

040978281

ABSTRACT:
A tuning unit with a bandswitch for high frequency receivers having a potentiometer system for the control of capacity diodes is disclosed. The potentiometer system includes a plurality of parallelly disposed resistance paths on which wipers can be moved by means of screw tuning spindles mounted beside one another in a common housing made of an insulating material. The bandswitch is formed of metal wires and is associated with each tuning spindle. The tuning spindles are joined for rotation with sleeves simultaneously forming the operating knobs which are carried in apertures in the front plate and each have a flange engaging the back side of the front plate about the apertures. The flange is slightly larger than the cross section of the apertures and tapers conically away from the back side of the front plate.

REFERENCES:
patent: 3508176 (1970-04-01), Labude et al.
patent: 3601722 (1971-08-01), Rolf
patent: 3743976 (1973-07-01), Meyer et al.
patent: 3846732 (1974-11-01), Labude et al.

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