D104 w/amp but no E/R switch

[W1EMQ]

Any one have a wiring diagram for D104 with pre-amp but with no E/R switch? All of the specs I've downloaded show this slide switch. Mine does not have one and I need to check the wiring layout of my old mic. Years ago I did a mod but I cannot now recall what or why. PTT works but no audio to Drake TR4 with new battery.
Chuck Kershner W1EMQ

 

[Bionic Chicken]

Any one have a wiring diagram for D104 with pre-amp but with no E/R switch? All of the specs I've downloaded show this slide switch. Mine does not have one and I need to check the wiring layout of my old mic. Years ago I did a mod but I cannot now recall what or why. PTT works but no audio to Drake TR4 with new battery.
Chuck Kershner W1EMQ

You must have a TUP9 stand then with six wires. Go to this link and see if it will shine some light on the subject.

BAROVELLI.COM SIGNALS - Astatic Microphone Schematics

BC

 

[skipshooter205]

i have seen the tug-8 with out the switch WHITE is normally audio check the mic wiring first and all ground screws since audio runs threw the ground also maybe check the voltage from the battery leads to make sure there is voltage present at the board
hope this helps

 

[Bionic Chicken]

How many wires in the D104 cord? 4 or 6?

 

[skipshooter205]

the tug-8 is the 4 and the 9 is the 6 wire

High side of audio goes to ring
Hot side of push to talk switch goes to tip
Ground side of audio and return side of push to talk switch goes to barrell.

This is the same configuration as collins. Unless some one has done something to change your TR4 this should work.

 

[Bionic Chicken]

Is there a possibility that the mike cartridge is bad? Make sure that the head off the D104 works on another mike.

 

[TonyV225]

Ive seen them go bad where you had to whistle or scream into them to get any slight movement :blink:

 

[donnyd01]

Any one have a wiring diagram for D104 with pre-amp but with no E/R switch? All of the specs I've downloaded show this slide switch. Mine does not have one and I need to check the wiring layout of my old mic. Years ago I did a mod but I cannot now recall what or why. PTT works but no audio to Drake TR4 with new battery.
Chuck Kershner W1EMQ

What you have is a TUG-9 D104. Uses a 5 wire plus shield cord. TUG-8 D104 uses a 4 wire cord with the switch you're talking about. TUP-9 D104 has the push bar in the base and the circuit board houses the leaf contacts instead of them being in the neck like the TUG8 & TUG9.