Efjohnson Mike

[n8uaz]

Can I adapt a fjohnson desk mike to a Yeasu 757GX or FT 890. I do not have a plug or wiring diagram for the Johnson. Picked it up in NEW Condition without the plug. Looked on the net but could not find wiring info for it

[W0LPQ]

Bet you didn'ty try here...

http://www.qsl.net/g4wpw/date.html

Viking is toward the end ... might help...

[n8uaz]

I have the owners manual for the Yaesu's but I did not have a schamatic for the Johnson/Viking Mike. I need the wiring for a 7 pin and do not know the Viking diagram location.

Thanks for the Site. Will use it in the future.

[w2ahp]

Can I adapt a fjohnson desk mike to a Yeasu 757GX or FT 890. I do not have a plug or wiring diagram for the Johnson. Picked it up in NEW Condition without the plug. Looked on the net but could not find wiring info for it


Use an ohm meter to determine the connections. Usually 4 wires, 2 to the mic element and 2 to the switch (assuming it has one). Shouldnt be difficult. :)



www.westfloridacomponents.com (http://www.westfloridacomponents.com)

[w9gb]

Tom -

I have had good luck with inquiries to EF Johnson, here:
http://www.efjohnson.com/request.asp

for documentation on various EFJ devices.
Since we do not have a photgraph to look at (to identify) --any model number on the desk microphone??

You may also find that what you have is really a Shure or Telex/Turner/EV OEM microphone
with EF Johnson's brand name on it.
The Shure 444 desk microphone was used by many radio manufacturers.

User Guides and Spec Sheets for discontinued Shure microphones
http://www.shure.com/ProAudio/Downloads/UserGuidesAndTechSpecs/us_pro_ug_disc_mics_content

w9gb

[n0kma]

Can I adapt a fjohnson desk mike to a Yeasu 757GX or FT 890. I do not have a plug or wiring diagram for the Johnson. Picked it up in NEW Condition without the plug. Looked on the net but could not find wiring info for it

I wired one up to my IC-706 a few months ago. For some reason i could not fine the stock microphone. Anyway, if i remember correctly the bare wire is GND the white is audio and the red is PTT. I may have the red and white reversed, but you'll figure that out right quick when you plug it in, hi hi. Works as a great DX mic on the 706. Does seem to pick up quite a bit of backround noise, unlike the MC-60 that is normally on it.

Todd
NØKMA