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UX-874 Radiotron Balloon tests like new 1930 era

UX-874 Radiotron Balloon tests like new 1930 era

By Tube World Express

$ 19.99

UX-874 Radiotron Balloon tests like new 1930 era brass pins in white box

 

voltage regulator (150VDC @ 10-50ma)


developed in 1925

See more: vacuum tube
Tags: 874, all, balloon, voltage regulator
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