Low-voltage remote-cutoff pentode for automobile-radio RF/IF amplification, designed to operate its heater, plate, and screen directly from a 12 V battery.
Miniature heptode frequency changer developed specifically for automobile radios operating directly from a 12 V battery. It performs oscillator and mixer functions effectively without a conventional high-voltage B-plus supply.
Low-voltage heptode converter for automobile-radio frequency-changing service. It performs oscillator and mixer functions directly from the vehicle's approximately 12.6 V supply without conventional high-voltage B-plus.
Medium-mu triode plus space-charge-grid tetrode for low-voltage detector/voltage-amplifier and power-amplifier service; tetrode output is only about 40 mW.
Low-voltage remote-cutoff pentode for automobile-radio RF/IF amplification with heater, plate, and screen supplies obtained directly from the vehicle battery.
Sylvania pentode documented in manufacturer literature. The available source does not provide sufficiently readable application or cutoff detail beyond its placement in the sharp-cutoff population, so classification remains conservative.
Low-voltage diode-pentode for automobile-radio RF or IF amplification and detection. Both sections operate effectively from the vehicle's approximately 12.6 V supply without conventional high-voltage B-plus.
Remote-cutoff miniature pentode for automobile-receiver IF and RF amplification, optimized for low plate voltage and automatic-volume-control operation.
Low-voltage automobile-radio combination tube with two detector/AVC diodes and a tetrode amplifier designed to operate directly from a nominal 12.6 V vehicle supply.
Two-diode space-charge-grid tetrode developed as an automobile-radio audio driver, operating directly from 12.6 V and providing useful drive power at exceptionally low plate voltage.
Hybrid automobile-radio tube combining two detector diodes with a high-perveance space-charge tetrode designed to drive a transistorized audio-output stage directly from 12.6 V.
Improved automobile-radio diode-tetrode combining two detector diodes with a high-transconductance space-charge-grid audio driver for transistorized output stages operating from a 12.6 V supply.
Low-voltage automobile-radio diode-tetrode whose space-charge-grid section operates directly from the 12.6 V vehicle supply as an audio driver, with two diodes for detection.
Two-diode space-charge-grid tetrode for low-voltage automobile-radio service, providing useful amplification directly from approximately 12.6 V while integrating detector or control rectification.
Seven-pin miniature sharp-cutoff pentode documented for fixed-gain signal-amplifier service. Manufacturer sources provide its electrical ratings and operating characteristics without indicating a stronger specialized functional identity.
Low-voltage combination of two detector diodes and a remote-cutoff pentode for 12 V automobile receivers. The pentode provides controlled-gain amplification while the common-cathode diodes perform detector or AVC rectification.
Pentagrid oscillator-converter designed specifically for 12 V automobile superheterodyne receivers. It combines local-oscillator and mixer functions while operating directly from the vehicle electrical supply.
Pentode-triode-diode for automobile receivers, providing IF amplification, audio-frequency amplification, and second-detector service directly from a 12-volt battery.
Low-voltage heptode oscillator-converter for 12 V automobile radios. It combines mixer and local-oscillator functions while operating directly from the vehicle supply without conventional high-voltage B-plus.
Low-voltage double-diode tetrode developed for automobile receivers, combining detector functions with a tetrode amplifier optimized for direct operation from a 12 V battery supply.
Space-charge-grid tetrode power-amplifier driver designed for direct operation from an automotive battery, providing useful low-voltage power gain without a conventional high-voltage plate supply.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Fully shielded subminiature directly heated RF pentode designed for low-drain battery equipment. Its compact construction and economical filament requirements suit portable high-frequency signal-amplifier applications where power consumption and space are restricted.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated remote-cutoff RF pentode with a 1.4 V, 25 mA filament. Designed for Class A high-frequency amplification, it combines low filament drain with variable-gain capability for portable battery receivers.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery diode-pentode combining radio detection with remote-cutoff amplification. The diode provides signal or AVC rectification while the controlled-cutoff pentode supports gain-controlled receiver amplification in portable equipment.
Very-low-power directly heated pentagrid converter for portable superheterodyne receivers. It combines oscillator and mixer functions while drawing only about 40 mA from a 1.25 V filament.
Directly heated variable-mu pentode designed for RF and IF amplification. Its controlled transfer characteristic supports gain-regulated receiver stages while the filamentary cathode suits low-power equipment.
Directly heated variable-mu pentode intended for RF and IF amplification. The variable-mu characteristic permits controlled receiver gain, while its filamentary construction supports compact low-power signal equipment.
Extremely low-consumption directly heated pentagrid mixer-oscillator for battery-powered radios. Its very low filament current minimizes battery drain while the multi-grid structure performs local oscillation and frequency conversion.
Low-power directly heated heptode frequency changer for portable battery receivers. Its economical filament supports oscillator-mixer service from modest plate and screen supplies in compact superheterodyne radios.
Directly heated variable-mu heptode for mixer service in battery-operated radio equipment. Its controlled characteristic permits gain variation during frequency conversion while maintaining modest filament demand.
Directly heated subminiature Russian pentode designed for high-frequency voltage amplification. Its compact construction and filamentary cathode suit miniature RF signal equipment where small physical size and low heater demand are important.
Directly heated subminiature Russian pentode for high- and intermediate-frequency voltage amplification. It is a compact RF/IF signal tube intended for miniature equipment rather than power-output service.
Low-voltage remote-cutoff pentode for automobile-radio RF/IF amplification, designed to operate its heater, plate, and screen directly from a 12 V battery.
Miniature heptode frequency changer developed specifically for automobile radios operating directly from a 12 V battery. It performs oscillator and mixer functions effectively without a conventional high-voltage B-plus supply.
Low-voltage heptode converter for automobile-radio frequency-changing service. It performs oscillator and mixer functions directly from the vehicle's approximately 12.6 V supply without conventional high-voltage B-plus.
Medium-mu triode plus space-charge-grid tetrode for low-voltage detector/voltage-amplifier and power-amplifier service; tetrode output is only about 40 mW.
Low-voltage remote-cutoff pentode for automobile-radio RF/IF amplification with heater, plate, and screen supplies obtained directly from the vehicle battery.
Sylvania pentode documented in manufacturer literature. The available source does not provide sufficiently readable application or cutoff detail beyond its placement in the sharp-cutoff population, so classification remains conservative.
Low-voltage diode-pentode for automobile-radio RF or IF amplification and detection. Both sections operate effectively from the vehicle's approximately 12.6 V supply without conventional high-voltage B-plus.
Remote-cutoff miniature pentode for automobile-receiver IF and RF amplification, optimized for low plate voltage and automatic-volume-control operation.
Low-voltage automobile-radio combination tube with two detector/AVC diodes and a tetrode amplifier designed to operate directly from a nominal 12.6 V vehicle supply.
Two-diode space-charge-grid tetrode developed as an automobile-radio audio driver, operating directly from 12.6 V and providing useful drive power at exceptionally low plate voltage.
Hybrid automobile-radio tube combining two detector diodes with a high-perveance space-charge tetrode designed to drive a transistorized audio-output stage directly from 12.6 V.
Improved automobile-radio diode-tetrode combining two detector diodes with a high-transconductance space-charge-grid audio driver for transistorized output stages operating from a 12.6 V supply.
Low-voltage automobile-radio diode-tetrode whose space-charge-grid section operates directly from the 12.6 V vehicle supply as an audio driver, with two diodes for detection.
Two-diode space-charge-grid tetrode for low-voltage automobile-radio service, providing useful amplification directly from approximately 12.6 V while integrating detector or control rectification.
Seven-pin miniature sharp-cutoff pentode documented for fixed-gain signal-amplifier service. Manufacturer sources provide its electrical ratings and operating characteristics without indicating a stronger specialized functional identity.
Low-voltage combination of two detector diodes and a remote-cutoff pentode for 12 V automobile receivers. The pentode provides controlled-gain amplification while the common-cathode diodes perform detector or AVC rectification.
Pentagrid oscillator-converter designed specifically for 12 V automobile superheterodyne receivers. It combines local-oscillator and mixer functions while operating directly from the vehicle electrical supply.
Pentode-triode-diode for automobile receivers, providing IF amplification, audio-frequency amplification, and second-detector service directly from a 12-volt battery.
Low-voltage heptode oscillator-converter for 12 V automobile radios. It combines mixer and local-oscillator functions while operating directly from the vehicle supply without conventional high-voltage B-plus.
Low-voltage double-diode tetrode developed for automobile receivers, combining detector functions with a tetrode amplifier optimized for direct operation from a 12 V battery supply.
Space-charge-grid tetrode power-amplifier driver designed for direct operation from an automotive battery, providing useful low-voltage power gain without a conventional high-voltage plate supply.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Fully shielded subminiature directly heated RF pentode designed for low-drain battery equipment. Its compact construction and economical filament requirements suit portable high-frequency signal-amplifier applications where power consumption and space are restricted.
Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.
Directly heated remote-cutoff RF pentode with a 1.4 V, 25 mA filament. Designed for Class A high-frequency amplification, it combines low filament drain with variable-gain capability for portable battery receivers.
Battery or receiving-tube frequency converter combining local-oscillator and mixer action for superheterodyne radio service. Its multi-grid structure provides frequency conversion while minimizing component count and, in battery types, filament power.
Battery diode-pentode combining radio detection with remote-cutoff amplification. The diode provides signal or AVC rectification while the controlled-cutoff pentode supports gain-controlled receiver amplification in portable equipment.
Very-low-power directly heated pentagrid converter for portable superheterodyne receivers. It combines oscillator and mixer functions while drawing only about 40 mA from a 1.25 V filament.
Directly heated variable-mu pentode designed for RF and IF amplification. Its controlled transfer characteristic supports gain-regulated receiver stages while the filamentary cathode suits low-power equipment.
Directly heated variable-mu pentode intended for RF and IF amplification. The variable-mu characteristic permits controlled receiver gain, while its filamentary construction supports compact low-power signal equipment.
Extremely low-consumption directly heated pentagrid mixer-oscillator for battery-powered radios. Its very low filament current minimizes battery drain while the multi-grid structure performs local oscillation and frequency conversion.
Low-power directly heated heptode frequency changer for portable battery receivers. Its economical filament supports oscillator-mixer service from modest plate and screen supplies in compact superheterodyne radios.
Directly heated variable-mu heptode for mixer service in battery-operated radio equipment. Its controlled characteristic permits gain variation during frequency conversion while maintaining modest filament demand.
Directly heated subminiature Russian pentode designed for high-frequency voltage amplification. Its compact construction and filamentary cathode suit miniature RF signal equipment where small physical size and low heater demand are important.
Directly heated subminiature Russian pentode for high- and intermediate-frequency voltage amplification. It is a compact RF/IF signal tube intended for miniature equipment rather than power-output service.
