Quantar Analog interface to controller

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moneyradio

Regular Member
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Nov 4, 2012
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I am trying to get a quantar programed as base in analog only mode to interface to an after market
controller.
I can not get the TX audio input to repeat audio at pin 1 nor 5 of the 50 pin telco connector #17.
Any ideas to help this project along? I only have the 4wire wireline card and basic wildcard.

This is what I have working:
On 50 PIN connector #17:
10k resistor short pins 8 and 22 for PTT
10k resistor short pins 8 and 18 for COS -
100k resistor short pins 8 and 37 for PL +
PTT works on pin 47
· Program wildcard input 9 active HI
· Program Table: State: input 9, action= key from WL, inaction= dekey from WL
RX Audio is seen at pin 2 .5v p-p and pin 30 1v p-p
TX Audio is input on pin 5 (not repeating when PTT keyed)
COS indicate works on pin 43 and active LOW
· Program wildcard output 7 active HI
· Program Table: State: RxCAR detect, action= set output 7, inaction= clr output 7
PL Indicate is found on pin 37 and active HI
· Program wildcard output 2 active HI
· Program Table: State: RxPL detect and RxCOS detect,
· action= set output 2, inaction= clr output 2
PL Disable is accomplished by grounding pin 17
· Program Table: State: input 7, action= RX PL Disable, inaction= RX PL enable
· Program wildcard input 7 active HI

Outputs review: 1 HI, 2 HI, 3 LO, 7 HI
Inputs review: 1 HI, 2 HI, 3 HI, 4 HI, 5 LO, 6 LO, 7 HI, 9 HI

If I use connector #14 the MRTI and enable "phone patch" under hardware configuration, I can get
TX audio input to pin 1 to repeat audio. What do I have to do to get the TX audio input to function
on the telco connector #17?

Thanks, Doug.
 
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moneyradio

moneyradio

Regular Member
Joined
Nov 4, 2012
Messages
13
Check the programming for the TX rules.

What would the table, state action and inaction be set to, to get the telco PTT pin 47 to key the station and repeat TX input audio at pin 5 along with the quantars PL?
 
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moneyradio

moneyradio

Regular Member
Joined
Nov 4, 2012
Messages
13
I have my reasons.... there are many repeaters that have to be linked together through other terrestrial link radios using a outboard controller. Any one else that may have a real answer would be appreciated.
 

d119

Prolific Contributor
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May 22, 2012
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Have you visited http://www.repeater-builder.com/motorola/quantar/q-interfacing/quantar-interfacing.html yet?

I've only ever done this interface once, but I recall that the only thing I needed off the 50-pin amphenol connector was a single lead. Everything else was on the DB-25 MRTI connector (and yes, you have to enable MRTI operation in the codeplug to turn the connector on).

I also did not need any resistors or anything like that.
 
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