Copper Talk » Ask The Tech » Modifications » How can make the Connex 4800 talk back variable? « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Delerius
Posted on Thursday, July 18, 2002 - 9:42 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi all, is there any way to make the talk back in the Connex 4800 variable?
Top of pagePrevious messageNext messageBottom of page Link to this message

Viking
Posted on Thursday, July 18, 2002 - 4:07 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If that has the EPT6900-10Z board, J7 should the jumper set for talk back. It lays left/right on the right hand side of the board. There are 6 pins, the 2 on the far right (closest to the edge of the board) are for the talk back on/off switch. The 2 on the far left are for the variable talk back (labled WT and W+). Place a 5K pot on these 2.
Top of pagePrevious messageNext messageBottom of page Link to this message

Delerius
Posted on Friday, July 19, 2002 - 11:10 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks Viking for the response. Would it be ok if I use a 1/2 watt 5K linear taper potentiometer?
Top of pagePrevious messageNext messageBottom of page Link to this message

Delerius
Posted on Saturday, July 20, 2002 - 10:05 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi Viking, another question, my 4800 has the Connex echo and there are two wires going from the WT, W+ to the echo board. Which wire do I put the pot on? Thanks for your help...
Top of pagePrevious messageNext messageBottom of page Link to this message

Jyd
Posted on Saturday, July 20, 2002 - 2:29 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

staight off the back if it is the same as mine.one red one black ,use the red
Top of pagePrevious messageNext messageBottom of page Link to this message

Delerius
Posted on Sunday, July 21, 2002 - 4:19 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

nope... no red or black... what I have coming off the main board (W+, WT) going to the echo board is a purple and a blue.
Top of pagePrevious messageNext messageBottom of page Link to this message

Viking
Posted on Tuesday, July 23, 2002 - 4:33 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

As far as the 1/2 taper, I don't know but it shouldn't hurt to try.

The schematic I have must be set up differently. It has the pot between W+ and WT. It has the on/off switch between GN and TB. It's an EPT6900-10Z I'm looking at but in the Galaxy DX2517.

The echo board is shown to hook up to J12 and J14.


Hopefully someone else can chime in here.
Top of pagePrevious messageNext messageBottom of page Link to this message

Jyd
Posted on Tuesday, July 23, 2002 - 9:53 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

there is a trick to that i just dont remember.there is a resister you can change to clean up the squeeling,but i dont remember which one. 307?

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: