Details
Used old stock shouldered bulb 5 pin tetrode with top cap. Various brands.
NSN/FSN = 5960001007104, 5960006175630
Signal Corps Number = VT-28
Used old stock shouldered bulb 5 pin tetrode with top cap. Various brands.
NSN/FSN = 5960001007104, 5960006175630
Signal Corps Number = VT-28