I soldered the "f" and "D" bead and sill wont work,got the PTT to work but i 
still cant get any audio to transmit or recieve through the OPC-617 cable, i 
even took the mic out if my david clark head set connected it straight to the 
pin 4 and 8 and it still wont transmit my voice.





--- In Repeater-Builder@yahoogroups.com, Duane Hall <du...@...> wrote:
>
>   You would want Rx audio from 2 and 7, Tx audio in on 4 and 8, solder 
> bead D in the radio.
> 
> I dont recall if there is a VOX option in the radio. If the intercom is 
> full duplex, how will you key up the radio (PTT)?
> 
> DB9
> 1    Dimmer in
> 2    De-Emph Audio Out (affected by Vol Pot)
> 3    Discriminators Audio (Un Squelched)
> 4    Tx Mod In
> 5    PTT in
> 6    COR out (probably need a pull up resistor)
> 7    Ground
> 8    Ground
> 9    Ground
> 
> Pin 2 - You can set a minimum level via Set Mode
> Pin 4 - Tx freq response. Solder bead F for data, solder bead D for audio
> Pin 5 - Enable external PTT via software. Common>Expert>EPTT
> Pin 6 - Enable COR via software. Disable the 2/5 tone function for the 
> selected channel.  Common>Expert> RX EXO to ON, and delay timer to OFF
> 
> 
> Pinout info on page 16 at 
> http://www.repeater-builder.com/icom/pdfs/icom-ic-f111-f121-f211-f221.pdf
> 
> 
> 
> Duane
> AB8QU
> 
> On 7/13/2010 10:28 PM, ryan_151 wrote:
> > im trying to use the OPC-617 cable with an Icom f121 radio to connect it to 
> > an intercom and need to know how what pins to use to connect my mic+- audio 
> > into the F121 radio and the f121 radio audio out +-.  Any help with this 
> > woud be great, Thanks
>


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