AXIS cm3 condenser microphone for 4 OR  8 pin Ten-Tec   hf radios.....Designed to plug directly into your Ten-Tec  hf radio without external accessories......High output condenser microphone  provides unsurpassed clarity and  fullness for varying band  conditions...This is not a music or vocal  microphone that is typically characterized by heavy bass and lack of clarity when used for hf applications ..Superior  transmit audio direct....Excellent rfi characteristics..... Plug and play... Rugged metal construction..... 6' xlr  female mic  connector and cable terminated  into a 4 or  8 pin mic connector   directly soldered  for Ten-Tec hf  radios ... Units work on vox or ptt   ... ....Soldered 3.5mm jack for ptt switch use ... Includes FREE PTT switch ....FOR USE WITH ALL Ten-Tec 4 or  8  PIN ROUND   HF RADIOS...... PLEASE SPECIFY MODEL WHEN ORDERING .......  . MONEY BACK GUARANTEE...            SPECIFICATIONS...Sensitivity: ): -44 ±3dB   IMP-900ohms
• Current Consumption: 500μA
• Signal to Noise Ratio: 58dB
• Frequency: 50~16KHz
• Operating Voltage: 1.1V to 10V