Batboard

Folks
I am trying to build an mt1000 cable, I looked at the diagram posted here, but i am a bit confused reading it. On the diagram posted what confuses me is the section marked "p1" I was wondering if sombody that knows could tell me what pins on the 25 pin connector go to what pin(s) on the 12 pin connector that attaches to the radio.

thanks for any help in advance

For the RIB to radio cable it's wired as follows..

RIB DB25 / RADIO CONNECTOR
1 / 7&5
24 / 6
8 / 9

4 to 11 Jumper on the DB25

KB

Thanks for the quick reply~!!!

Your Welcome.. Have Fun!

MT1000, HT600, HT800 etc.

kb0nly wrote:For the RIB to radio cable it's wired as follows..

RIB DB25 / RADIO CONNECTOR
1 / 7&5
24 / 6
8 / 9

4 to 11 Jumper on the DB25

The connection on pin 7 of the radio connector is not required..

Yes and no on pin 7, it mutes the speaker when the programming cable is connected, it's nice to have it muted while programming so you don't have to listen to the constant tone, but it's also nice to have the speaker active when adjusting the squelch via RSS.

I put a small toggle switch in the connector shell so i can turn the speaker on and off.

Mike, Great drawing for the programming cable. Easy to understand.

I agree with the Tinman, a switch on the EXT SPKR switchover line is a good test idea. Mite as well run two wires to a external speaker while you are at it!

They do not make any noise when programming... the cloning cable does not have pin 7 connected either.
The only reason pin 7 is shown grounded is that the circuit is from the service cable and it is required to route RX audio to the 4005 service box.. But as a programming only cable it is not required..

Mike