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Author Topic: Microphone wiring?  (Read 961 times)
KEVIN1218
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Posts: 19




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« on: April 19, 2013, 01:04:01 PM »

I recently purchased a Ten-Tec Speech processor model 234 to utilize with my Drake TR7A, both are (4) pin connectors, however the pin-out is different. I wanted to stay with the Drake line, specifically SP75 speech processor but I could not justify spending 2+ times the cost.

The output cable of the 234 plugs into transceiver (I assume needs to be rewired) and the Shure microphone plugs into the 234 (I assume needs to be rewired)

Now to my request......could anyone be specific as to the wiring from the microphone that I use (Shure model 450) to the Ten-Tec Speech processor model 234.

http://cdn.shure.com/user_guide/upload/405/us_pro_450seriesii_ug.pdf
http://www.qsl.net/tentec/manuals/234.pdf

Thank you in advance.

73
Kevin
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WB2WIK
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Posts: 20633




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« Reply #1 on: April 19, 2013, 02:07:10 PM »

On the Shure 450 cable:  Tie the black, white and shield wires together to form a common ground.

That "common ground" (B/W/shield) go to Pin 2 on the Ten Tec.

The green wire from the Shure 450 goes to pin 1 on the Ten Tec.

The red wire from the Shure 450 goes to pin 3 on the Ten Tec.

Pin 4 on the Ten Tec would not be used.
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KEVIN1218
Member

Posts: 19




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« Reply #2 on: April 19, 2013, 04:13:12 PM »

Thank you. Does anything need to be done on the Ten Tec output cable to the Transceiver?
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K4RVN
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Posts: 788




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« Reply #3 on: April 19, 2013, 07:28:55 PM »

You will have to check the TT output plug wiring to the transceiver mic. input wiring. Some wires may need to be changed.
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K8AC
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Posts: 1477




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« Reply #4 on: April 20, 2013, 02:22:32 PM »

Just about every microphone and microphone connector wiring ever used in the world of amateur radio is found here: http://homepage.ntlworld.com/rg4wpw/date.html

73, K8AC
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AD6KA
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Posts: 2238




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« Reply #5 on: April 20, 2013, 09:57:53 PM »

Just about every microphone and microphone connector wiring
ever used in the world of amateur radio is found here:


http://homepage.ntlworld.com/rg4wpw/date.html

Wow, what a terrific resource. Thank you.
I am going to bookmark that one!
73, Ken  AD6KA
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