Finding a COR inside an SM50

[kd8ake]

Can any one tell me where to find a spot inside the SM50 to use as a COR. I need a spot that has a power change on RX from o-3vdc to 5-10vdc. I know the Maxtrac has a spot like this.

[Bigred]

Never tried on SM-50, but check one speaker lead to ground and see if bias voltage goes on and off with receive.

[jackhackett]

I'd try to avoid using the speaker lead.. some of those chips can get cranky if they see any imbalance on the outputs.. there's usually a mute lead that goes from 0V to B+ on receive. I don't recall which chip the SM50 has off the top of my head, I can check tomorrow.

[Lake Effect]

Did I miss something here? On the one and only time I needed COR from a SM50, I just used the output from the 16 pin connector on the rear.

L.E.

[jackhackett]

Yup, looks like Pin 8 is programmable COR. Didn't have a manual handy, but I should've checked here: http://batlabs.com/sm50.html

[Bigred]

Speaker trick is down and dirty for 5 pin maxtrac. Works for hi impedence logic, wouldn,t hang
a 40 amp relay off it. Back to basics, SM50, use pin 8 as COR - DOH!