Miniature heater-cathode type twin diode designed for full-wave rectifier operation in compact power supplies. MFR: General Instrument SKU: 6X4-X1DR New old stock * No longer available for export.
Designed for use in resistance coupled circuits as a voltage amplifier or phase inverter New old stock * No longer available for export. MFR: RCA SKU: 6SL7GT-RCA
Designed for use in resistance coupled circuits as a voltage amplifier or phase inverter. The TungSol 6SL7GT round plates are considered by some to be the best 6SL7 tubes available.
New old stock * No longer available for export. MFR: Tung-Sol SKU: 6SL7GT-TS
Designed for use as a high-gain radio-frequency or intermediate-frequency amplifier. MFR: RCA, GE, Sylvania, National Union SKU: 6SH7 New old stock * No longer available for export.
Designed for use as a combined detector, amplifier, and automatic-volume-control tube in radio receivers. Manufactures RCA, Tung-Sol, GE, Raytheon, Sylvania,Philco, Westinghouse SKU: 6SQ7 New old stock * No longer available for export.
Designed for use as a combined detector, amplifier, and automatic-volume-control tube in radio receivers. Manufactures Raytheon SKU: 6SQ7GT New old stock * No longer available for export.