====== Hand-held Microphone Model 700 ======
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===== Description =====
High quality electret condenser microphone cartridge with built-in IC preamplifier powered by self-contained 9V battery or by transceiver (steering diodes select the higher voltage if both are present). Comes with a push-to-talk switch built-in and with a coiled cord that can be extended to a seven foot length. Housed in an ABS plastic case.
Model 700 comes without the connector and Model 700-C has a standard four terminal locking type connector attached and wired for use with any Ten-Tec transceiver that has a mating chassis connector. Model 700-A has a standard 1/4" phone plug.
===== Specifications=====
***Type:** Electret Condenser Microphone
***Sensitivity:** -65 dBV (0 dBV = 1V/uBar @ 1kHz).
***Output Impedance:** 400 ohms, typical @ 1 kHz).
***Polarizing Power:** Built-in 9 volt transistor battery or 4 to 10 volts DC @ 300 uA, typical.
***Operating Temperature:** -10o to +60o C.
***Maximum Sound Pressure Level:** 130 dB.
***PTT Switch:** DPST storts Pin 3 (yellow lead) to GND and connects power source to cartridge.
***Size:** HWD 3-1/2" x 2-7/16" x 1-5/8".
***Weight:** 6-1/2 ounces, including battery and cable.
===== Cable Connections:=====
^ Function ^ Model 700 Cable ^ Model 700-C Connector Pin ^
|Signal Lead |White (Shielded) | 1 |
|Common GND |Black & Shield | 2 |
|Push-To-Talk Switch |Yellow | 3 |
|+ Polarizing Voltage |Red | 4 |
|Not Used |Blue | - |