01/02/2023
https://www.youtube.com/watch?v=oHjZs0bNwEs
How a vacuum tube (valve) works. The diode, triode, tetrode and pentode explained.
Established in 1934, WVRA is an ARRL affiliated amateur radio club serving Wausau and North Central Wisconsin. W9SM Repeater 147.135Mhz PL114.8.
Wausau, WI
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