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MILITARY EQUIPMENT -  FIELD TELEPHONE SET -  RADIO SET (PRC-77 st.) -  FIELD SWITCHBOARD SET -  CREWMEN HELMET -  BALLISTIC BODY ARMOUR -  HANDSET -  HEADSET -  ANTENNA SET -  LOUDSPEAKER -  CORD & CABLE ASSY -  CONNECTORS -  MINE WIRE -  OTHER ELEMENTS MOLD -  Vacuum Cleaner Filters Molds -  Dye Casting Molds -  Precision Casting Molds T E L :  82-32-670-7410 F A X :  82-32-670-7413 Email :  sales@koreatechno.com ktsbshim@gmail.com  Home > PRODUCTS > MILITARY EQUIPMENT > OTHER ELEMENTS > KT-M139/G (M-139/G st.) Earphone     KT-M138/G (M-138/G st.) Microphone SPECIFICATION   ▷ Type : Dynamic ▷ Sensitivity : More Than -56 dB(1KHz) ▷ Impedance : 150 ohm +- 15 ohm ▷ Frequency Range : 0.3 ~ 3.5KHz ▷ Termination : Screw(2-56unc) Plug Hole dia 2.1 pie ▷ Dimensions(mm) : 28.6 x 54.6 x 18.2 ▷ Weight : 18g ▷ Ambient Temperature : -40 ℉ ~ 150 ℉ ▷ Humidity : Max 95% RH ▷ Use : Crew Man's Radio Helmet (MK-1039/G st.), (MK-1697/G st.)  ▷ FSN : 5965-937-1851 Jump to: Select a menuPRODUCTS|--MILITARY EQUIPMENT|   |--FIELD TELEPHONE SET|   |--RADIO SET (PRC-77 st.)|   |--FIELD SWITCHBOARD SET|   |--CREWMEN HELMET|   |--BALLISTIC BODY ARMOUR|   |--HANDSET|   |--HEADSET|   |--ANTENNA SET|   |--LOUDSPEAKER|   |--CORD & CABLE ASSY|   |--CONNECTORS|   |--MINE WIRE|   |--OTHER ELEMENTS|--MOLD|   |--Vacuum Cleaner Filters Molds|   |--Dye Casting Molds|   |--Precision Casting Molds

904, 261, Doyak-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do, Korea Tel : 82-32-670-7411 Fax : 82-32-670-7413 Copyright ⓒ 2009 KT KOREA TECHNO CO. All rights reserved. / E-mail : sales@koreatechno.com Supported by ONTOIN