====== Hand-held Microphone Model 700 ======
{{700.jpg?150|}}

===== 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:** -10<sup>o</sup> to +60<sup>o</sup> 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  |  -  |