Motorola Quantar RX Audio issue

[rothy88]

Morning all,

Trying to wire up an external device (Telephone interconnect) to my standalone quantar. Having trouble getting RX audio out of the unit (Pin 30 with all the wildcard options prorammed). It seems that pin 30, where the audio should be coming out, has a constant 5v on it, and no audio when connected to the external device. Is this normal? or am I missing a setting in RSS? The 5v is present even if i turn off the wildcard options, and when the wireline board is removed, wondering if anyone else has seen this before? cheers

 

[xmo]

Why wouldn't you use the MRTI interface which is specifically intended for telephone interconnect?

 

[xmo]

Did you do this:

 

[K6OQK]

Did you do this:

View attachment 123456

I have the same problem of wanting the wide band audio from pin 30 of J-17. For my needs, I want something better than 300-2500 Hz audio bandwidth that comes off the orange connector. I get the same results on J-17, pin-30 as frothy88 has; no audio but +5 VDC. I'm aware of the picture you show (above) but apparently I need someone more experienced with this radio than I to take me by the hand and show me step by step.

Thanks,

Burt, K6OQK

 

[xmo]

The +5VDC is present because this is a direct connection from an op amp output. As shown here, the audio is filtered from 0 to 6000Hx and down 3 dB at 5275 Hz.

 

[xmo]

Do you have the wildcard option enabled in the system configuration screen. It defaults to disabled.