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> Geotek ham radio station desk microphone
Geotek ham radio station desk microphone
I'm selling a new desk mic from GEOTEK Communications. Made in USA. It is coming with its original packaging.
The mic is coming without a connector, so you can use it with any ham radio transceiver. Including is the diagram witch is in the bottom of the mic. You can choose between the two switches impedance - hight or low z.
Frequency response: 50 to 12,000 Jz.
Output: Hi Z: -55db (OdB = 1 volt/microbar) ; -151 dB EIA.
Lo Z: -58 dB (OdB = 1 mw/10 microbars; -76dB (OdB = 1 volt/microbar); -152 dB EIA.
Impedance: Hi Z: 40,000 ohms, matches 125 to 1,000 ohms.
Switch: Control: DPDT professional long life leaf switches, operated with a simple push-to-talk bar or lift-to-talk operation.
Impedance: DPDT slide switch located on underside of microphone.
Dimensions: 238mm (9-3/8") high; 110mm (4-11/32") wide; 148mm (5-27/32") deep.
Weight: 687 grams (24/1/4 oz.).
Finish: Durable molded Cycolac in black with die cast base painted in a complimentary color.
The mic was tested on Kenwood TS-870 (8 pin) and works perfectly. Good reports about the audio from all over the world.
If you want to connect it with Kenwood transceiver 8 pins, the instructions are as follows:
PTT - green wire to pin 8, white wire to pin 2.
Mic - red wire to pin 1, black wire to pin 7, shield wire to pin 7
The mic was tested on 2 Yaesu Ft 817/857d and works perfectly.You need the microphone connector RJ-45 (modular) and the instructions are as follows:
