Aux Mic on XTL2500

[SchroedingersCat]

I am connecting an extra speaker and aux mic to the XTL-2500 using the accessory connector. All is good EXCEPT:

1) PTT on the mic only keys the radio when the mic is in the metal mic clip. When the mic is removed from the clip the radio does not key.
2) I can not get any voice to be transmitted, obviously when the mic keys.

I am using an HMN4609C microphone with an RJ-45 connector with the following connections:

Mic Pin 4 (red) to Ground (Accessory Connector Pin 1)
Mic pin 5 (Black) to Aux Mic (AC Pin 23)
Mic pin 6 (Blue) to PTT (AC Pin 16)

I have read that there might be some programming necessary to change the Aux Mic sensitivity. I would assume this was problem if it wasn't for the strange PTT behavior.

Do I need to do something with the Monitor pin (3) on the mic? As I see it there are only 4 useful connections on this mic (pins 3-6), while there are 6 wires in the connector...any idea what the others are for?

Any help is appreciated.

 

[duggerd]

My gut instinct would be a ground pin missing somewhere. Is your mic clip grounded to the same reference as the radio? I believe you are supposed to have that ground connected between the frame and the clip. If the mic is in the clip, it could be using that ground for the PTT.

 

[com501]

What FW version is the radio, and is this a mid power or high power remote head? If this is a remote head and mid-power, which package, and where are are you attaching the connector. Brick or control head?

I am assuming the regular mic is not attached, correct?

 

[SchroedingersCat]

My gut instinct would be a ground pin missing somewhere. Is your mic clip grounded to the same reference as the radio? I believe you are supposed to have that ground connected between the frame and the clip. If the mic is in the clip, it could be using that ground for the PTT.

The mic clip is not grounded at all. In fact it is not attached to anything except the mic (when it is). I can't see how grounding the mic clip will change the behavior of the mic when the mic is not in the clip (the problem mode is that the mic does NOT key when OUT of the clip, but does key when IN the clip.)

 

[SchroedingersCat]

What FW version is the radio, and is this a mid power or high power remote head? If this is a remote head and mid-power, which package, and where are are you attaching the connector. Brick or control head?

I am assuming the regular mic is not attached, correct?

The regular mic IS attached.
The FW is relatively new...I will have to go look at it (I have to look up the key sequence to show the FW first ). It is mid-power integrated radio (not remote head). I am attaching the aux mic to the 26 pin accessory connector on the back of the radio.

 

[tuckerm]

Home button 5 times after turning the radio on.