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Connecting Zetron Model 25 to XPR4550

cpg178

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Joined
Sep 7, 2014
Messages
411
I'm trying to connect a Model 25 to a 4550, I have an accessory cable pinned out for PTT, and TX Audio on the XPR however I am not sure what to connect to on the Model 25. In the manual it gives controlling an 8 channel system as an example, but I just want to directly key the one radio, and pass the tone output to it.

1708706069000.png1708706099484.png


1708706116940.png
 
Last edited:

jeepsandradios

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Jul 29, 2012
Messages
2,079
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East of the Mississippi
So out of the Zetron you need to use 3 (ground) and 12 (CH1 PTT). Then program your tones to go out on CH1. Audio needed to be interfaced also but should go thru a 600ohm transformer to a mobile.
 

cpg178

Member
Joined
Sep 7, 2014
Messages
411
So out of the Zetron you need to use 3 (ground) and 12 (CH1 PTT). Then program your tones to go out on CH1. Audio needed to be interfaced also but should go thru a 600ohm transformer to a mobile.
Thanks,
I got everything working!
 
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