4 diode-pentode composite tube (1U5) radio | Details | Hackaday.io
1U5 Tubes audiofréquence USA
1U5 Diode Sharp Cutoff Pentode Tube. Designed for use as a combined detector, audio-frequency amplifier, and automatic-volume-control tube. MFR: Sylvania, RCA, GE, Reliatron, Westinghouse. SKU: 1U5. New old stock. No longer available
vacuum tube 1U5 2 ps NEC: Real Yahoo auction salling
1U5 Diode Sharp Cutoff Pentode Tube. Designed for use as a combined detector, audio-frequency amplifier, and automatic-volume-control tube. MFR: Sylvania, RCA, GE, Reliatron, Westinghouse. SKU: 1U5. New old stock. No longer available