Tube tester design.
22:00
Power Supply for German WW2 Military Radio.
28:18
Tube Tester Repair and Testing (Hickok Circuit) Western Electric KS-15560-L1
17:53
Homemade Valve Vacuum Tube Tester Build - Part 1
13:31
Homemade spy transmitter.
16:23
Cigar Box Guitar Build - start to finish
14:12
Tube Tester you can build yourself.
14:48
Funksprechgerät f , German WW2 Panzer radio in use.
15:25