Designed to operate in radio frequency or intermediate frequency amplifiers in battery operated receivers. New old stock * No longer available for export. MFR:Standard Brand, Philco, RCA, Radio Television. SKU: 1U4
Designed for use as a combined detector, audio-frequency amplifier, and automatic-volume-control tube. New old stock * No longer available for export. MFR: Sylvania, RCA, GE, Reliatron, Westinghouse SKU: 1U5
Designed for application in power output stages of receivers. New old stock * No longer available for export. MFR: GE, Ken-Rad, Tung-Sol,Teonex (Made in UK), Marconi (Made in Canada) SKU:2A5
Designed to function as either a amplifier or oscillator up to 3.75GHz. Pulsed operation possible, delivering up to 300W out at 3GHz. New old stock * No longer available for export. MFR: GE SKU: 2C40