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1R5T Pentagrid Converter Tungsram Radio Electronic Miniature Vacuum Tube

This is an original, discontinued 1R5T electronic tube made in Hungary by Tungsram RT. These miniature type tubes with their 9 micron thick (nine millionth of a meter) filament wire - uses only 25 mA - Half the US Made Tubes! for heater - were the top of the vacuum tube technology. The 1R5T were designed as RF mixer and amplifier for many lightweight, compact, portable, battery operated equipment. Excellent part for antique radio, instrument or other battery operated item restoration. Useful as a replacement, for electrometer circuits or a foundation for a private vacuum tube museum. It is a NOS - [New Old Stock] tube - unused, in original box, in excellent condition.
1R5T Pentagrid Converter Battery Type Tungsram Radio Electronic Glass Vacuum Tube [11 KB]
IMPOSSIBLE TO FIND - HISTORICAL TUBE

Features:

1R5T Pentagrid Converter
MFG: Tungsram RT Quality Made in Hungary
RF, AF, Mixer/Oscillator, Amplifier - Electrometer
Heater: 1.4 V, 25 mA - Half the US Made Tubes!
Plate: 90 Vmax, 1.6 mAmax, 0.15 Wmax
Base: 7-pin miniature Similar to 1AB6

Notes:

NOS - [New Old Stock] tube Original box
Unused Price: $60 One available
S/H included within continental US
1R5 Miniature 7-Pin All Glass Electronic Vacuum Tube Electrode Connections   F=Filament, G=Grid
PIN # 1 2 3 4 5 6 7
Electrode F-, G5 Anode G2, G4 Grid 1 F1, G3 Grid 3 F+
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