SLR8000 Input Audio from DB25

[longnose48]

I have a Motorola SLR8000 repeater that is currently in standalone repeat mode (analog only). We are trying to interface it with a JPS SVN-12 Comparator to be able to do voting from a second receiver site.

When we wire up the JPS to the DB-25 on the back of the Motorola for PTT and COR, turn off standalone repeat, the repeater keys, the RX Audio comes out of the speaker on the JPS, but no audio passes over the air the repeater just dead airs.
The JPS tech confirmed with a lineman that the audio is leaving terminals 4 & 5 on the back of the JPS, so we think it's something in the Motorola. I looked in CPS and I don't see anything that jumps out at me.

I am pulling my RX audio out of the radio from pin 7 on the DB 25 and I have tried inputting audio from the JPS into pin 1 (unbalanced) and pins 1 & 22 (balanced)

 

[Tech21]

You need to set the repeater up as 4 wire TRC. Hopefully, you have a wireline card. On the svm-2 the audio goes to 4/5 for tip and 1/2 for ring.

The wireline audio comes out of the station on 1/2 and 4/5.

Your connection should go from the wireline card WL1, to the terminal block on the back of card 1 for your main transmitter.

It will not work using the db-25 connector because you can't ouput status tone and everything else the voter is looking from from the db-25.

At your receiver site, set the repeater for analog voting receiver and set everything else up the same on the wireline card.


Turn the standalone repeater back to default, that setting only applies when you have a backup repeater connected to a main repeater. If the main repeater goes down, the backup takes over...automatically...60% of the time.