ASTATIC - T2M-931 - DTMF Series Microphone
Special Price
$34.98
Regular Price
$48.95
READY TO SHIP - ONLY 5 LEFT IN STOCK!
SKU
148022
VINTAGE NIB NOS ASTATIC - T2M-931 - DTMF Series Microphone with Touch Pad, New
Handheld DTMF Microphone
T2M-931- DTMF Series Microphone with touch pad that I purchased from you, has a special molded plastic connector at the end of its microphone cable, which was designed to work with a particular commercial transceiver. When using this microphone with a modern Amateur radio transceiver, this plastic connector has to be removed, and the colored wires soldered to a microphone connector. Amateur transceivers like Kenwood, Yaesu, Icom, and Tentec have the proper phantom B+ voltage on one of their Microphone front panel mic jacks to power this Astatic microphone. However, when doing this the T2M-931 mic cable yellow wire "Hangup Button" wire, MUST be connected to Chassis ground pin of transceiver for this microphone to work. The shield ground wire of this microphone is an AC audio ground only and is not the ground for the mic element & preamp stage negative voltage to work. The yellow Hangup Button wire MUST go to ground to get negative voltage for this microphone to work. Most CB transceivers with 4 to 6 pin mic front panel jacks Do-Not have phantom B+ Voltage to power this Astatic T2m 900 series amplified microphone.
Rugged Housing for Professional Two-way Communications
Dual tone Multi-Frequency Electronics.
Compatible with most applications.
Specially designed acoustic resonator tailors frequency for maximum voice intelligibility.
Pre-Amplified Electret
Frequency Response: 50 - 50000 Hz
Less than 100 Ohms.
Output Level -35dB re 1Volt/microbar
Power Requirements:10 to 14VDC, filtered at up to 40ma
Auto Key-up, audible feedback when any key is pressed with hook up instructions.
Speaker / Microphone Matches Virtually any Transmitter.
Micro Switch with Positive Snap Action.
Rotatable Spring Clip on Back.
Dimensions: Approximately 2 11/16 " wide x 3 3/8" high x 2" D.
Astatic microphones in Commercial & Amateur service are "Second to None".
Complete with 6 wire Neoprene coil cord, extends to 7 feet.
Includes Hook-up Instructions.
Proudly Made in USA
| SKU | 148022 |
|---|---|
| Condition | NOS - NEW OLD SURPLUS |
| Part Number | T2M-931 |
VINTAGE NIB NOS ASTATIC - T2M-931 - DTMF Series Microphone with Touch Pad, New
Handheld DTMF Microphone
T2M-931- DTMF Series Microphone with touch pad that I purchased from you, has a special molded plastic connector at the end of its microphone cable, which was designed to work with a particular commercial transceiver. When using this microphone with a modern Amateur radio transceiver, this plastic connector has to be removed, and the colored wires soldered to a microphone connector. Amateur transceivers like Kenwood, Yaesu, Icom, and Tentec have the proper phantom B+ voltage on one of their Microphone front panel mic jacks to power this Astatic microphone. However, when doing this the T2M-931 mic cable yellow wire "Hangup Button" wire, MUST be connected to Chassis ground pin of transceiver for this microphone to work. The shield ground wire of this microphone is an AC audio ground only and is not the ground for the mic element & preamp stage negative voltage to work. The yellow Hangup Button wire MUST go to ground to get negative voltage for this microphone to work. Most CB transceivers with 4 to 6 pin mic front panel jacks Do-Not have phantom B+ Voltage to power this Astatic T2m 900 series amplified microphone.
Rugged Housing for Professional Two-way Communications
Dual tone Multi-Frequency Electronics.
Compatible with most applications.
Specially designed acoustic resonator tailors frequency for maximum voice intelligibility.
Pre-Amplified Electret
Frequency Response: 50 - 50000 Hz
Less than 100 Ohms.
Output Level -35dB re 1Volt/microbar
Power Requirements:10 to 14VDC, filtered at up to 40ma
Auto Key-up, audible feedback when any key is pressed with hook up instructions.
Speaker / Microphone Matches Virtually any Transmitter.
Micro Switch with Positive Snap Action.
Rotatable Spring Clip on Back.
Dimensions: Approximately 2 11/16 " wide x 3 3/8" high x 2" D.
Astatic microphones in Commercial & Amateur service are "Second to None".
Complete with 6 wire Neoprene coil cord, extends to 7 feet.
Includes Hook-up Instructions.
Proudly Made in USA
