CM360 as repeater - pin problem?

[citylink_uk]

I'm setting up a small repeater using two CM360 mobiles, using one of those cheap ebay cables to connect the radios.

The setup does "work", but there is an issue. The TX radio transmits audio from the RX, but is only TX'ing when audio is received and not on receipt of the carrier.

If I stop talking for example whilst holding the PTT, the TX drops.

I assume I need to change some pins on the radio. Can anyone help?

[citylink_uk]

Also noticed that the radio will only pass audio when VOX is ticked in the personality.

[escomm]

What are pin assignments on the TX and RX radio?

[citylink_uk]

The only ones I can change are #3,4,8,9,12,14.

Of those all are set to disabled apart from.

RX Radio - Pin 8 : Car Audio Mute
TX Radio - Pin 8 : Voice PTT