[OFARC] Microphone is repaired!!

[Ralph (home)]

As you may know, the RJ45 microphone connector for my radio broke.  

Several people gave me excellent advice on replacing the connector and one
loaned me a crimping tool.

 

This is the story ...

 

I looked over the RJ45 of the mic for my 706 and saw 5 conductors in the
plug and wrote them down in order.  The plug does not have a conductor at 3
of the 8 pins.

Then I looked at the schematic in the manual .8 pins shown with a function
for each pin, no color code

But the Schematic shows 5 only conductors

 

Then I cut open the mic cable sheath.

The wire colors in the original RJ45 connector did not match what I found in
the microphone cable.

I scratched my head a while.  

It turns out that one of the conductors is the braid shield from the cable
in shrink wrap tubing.  I don't have any shrink wrap and the plug only uses
5 of the 8 pins ... I tried but could not get the wires to the correct pins
PLUS the shield would not cooperate at all.

 

Then I remembered seeing a "keystone" block for RJ45s.  It is a small block
where you bring the wires of plain CAT/LAN cables and convert them to a
female connector to RJ45

So I bought a couple ($3 each) and gave it a try.

 

Hooked up the wiring from the mic cable to the block, then I attached a 1 ft
cat5e jumper from the block to the radio gave it a try.  It took me a couple
tries to get them all on the right pin.  Once I had the wiring so the mic
worked, I put on the little cover that comes with the keystone block.  

 

Back in business!!

 

Ralph, KE5HDF

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