M130 COR

kc4iev · Post by **kc4iev** » Tue Sep 10, 2002 7:50 pm

MAYDAY- WE HAVE A REPLACEMENT RECEIVER M130 FOR HAM REPEATER
WHICH CURRENTLY HAS A M120. THE M120 HAS THE COR ON PIN 8 OF THE ACCESSORY CONNECTOR ACTIVE LOW. THE PROBLEM WITH THE M130 IS THAT PIN 8 STAYS AT 4.65 WITH NO CHANGE. THANKS SCOTT

April · Post by **April** » Wed Sep 11, 2002 1:05 am

Scott, you have to set up the Accessory Connector configuration in the RSS. From the Radio Wide page go to the OTHER ACCY page and set up the PIN 8 for COR+PL or DPL. It can go high or low depending on the setting.\

Radiogeek97 · Post by **Radiogeek97** » Fri Sep 03, 2004 2:08 am

i have an M130 and in the rss there is no ability to choose how the accy connector is programed. The choices are not there, i am using gm300 rss to do this. Could my m130 be an early model? it is a 2 chan version, with the 16 pin connector.

Post by **wavetar** » Fri Sep 03, 2004 11:39 am

You are correct radiogeek97, the M120/130 does not allow accessory pin programming.

Todd

Radiogeek97 · Post by **Radiogeek97** » Fri Sep 03, 2004 1:51 pm

thanks for the confirmation, do you know of any way to get a cor signal out of the M130. I own the unit nad dont have the 2-3 hundred to get a cdm or radius right now.

take care

Nickdap · Post by **Nickdap** » Mon Dec 13, 2004 2:57 am

Hi,

Did we sort this one out? My M120 is doing the same thing. Just under 5volts with no change upon a signal present.

Nick

Radiogeek97 · Post by **Radiogeek97** » Mon Dec 13, 2004 3:43 am

nick

i gave up from my end but i am sure there is some way of doing it by opening the radio up

kcbooboo · Post by **kcbooboo** » Mon Dec 13, 2004 5:06 am

You can add a simple COR circuit consisting of a 10k resistor and an NPN transistor. You would need the schematic of the logic board to find the spot to hook it up to, but basically there's a point called RX MUTE that comes from the CPU. This goes high when a carrier (with PL/DPL) is present. The resistor isolates this from the transistor, and the transistor inverts it so you end up with a low-active signal. I usually add a wire to one of the spare pins on the front panel that goes to a spare pin on the MIC jack, then use the signal at that point to go to my repeater controller. This "trick" will work on most MaxTracs and Radiuses, and it doesn't seem to depend on whether it has a 5 or 16 pin accessory jack.

By the way, I later found out that the circuit I came up with is used in the 16-pin acc jack radios to drive the COR pin. Not all radios have it, but it's certainly simple enough to add.

Bob M.

stvnd53 · Post by **stvnd53** » Mon Dec 13, 2004 5:09 am

I TRIED THIS ONCE; INSTALL #1N914 OR EQUIV. BETWEEN Q552 COLLECTOR AND PIN #8.TRY THIS AT YOUR OWN RISK!
YO PRANSKY!DOES THIS SOUND RITE????

RADIONET · Post by **RADIONET** » Wed Dec 15, 2004 2:38 am

Hey,

all you have to do is while on the RSS change to repeater mode (F6) and program as generic controller for RX.

thats it...

M130 COR

M130 COR

m130 cor