BIRD Digital RF

General purpose amplifier at low and high frequencies

New old stock * No longer available for export.
MFR: Tung Sol , Sylvania, Amperex, Motorola, Raytheon
SKU: 6661

Designed for use in the power supply of AC or AC/DC receivers.
MFR: Tung Sol
SKU: 25Z6GT
New old stock * No longer available for export.

Designed to operate as a rectifier tube in AC and AC-DC amplifier circuits.
New old stock * No longer available for export.
MFR: Tung Sol, Cunningham, Pro Comm
SKU: 35Z3

Designed for use in the power supply of AC operated equipment.
New old stock * No longer available for export.
MFR: Tung-Sol, RCA, National Union
SKU: 80-TUBULAR

Two Mica, Grey Plate, and a round Halo Getter. Used in audio amplifiers.
MFR: Tung Sol
SKU: 12AY7
New Old Stock * No longer available for export

New old stock / New in box * No longer available for export
MFR: Sylvania, USA 
SKU:12AT7WA-TS

Designed to be used as an audio amplifier tube
New old stock * New In Box * No longer available for export.
MFR: Tung-Sol
SKU: 6189-TS

Designed to be used as a high gain voltage amplifier and a cathode type phase inverter
New old stock * No longer available for export.
MFR: Tung Sol
SKU: 7247-TS

Designed to be used as a high gain voltage amplifier and a cathode type phase inverter
This tube can replace 7247
New old stock * No longer available for export.
MFR: Sylvania, USA
SKU: 12DW7-SYL