[App_rpt-users] Overloading of a discriminator?

[pete M]

Hi! I am posting this here and on the repeater builder mailling list.




I was at a repeater site this week end to install a URI-X and a computer as a repeater controler (allstarlink) for a MSR2000 ham radio repeater.




The repeater is already controled by a Elektra 2000 Repeater controller with voice ID. The owner dont want me to disconnect his controler, he want it disable, and in case the computer blow, or something really bad happen he want to power back his small controler and go on while we repair the other controler.




Thats a good idea but I think this is cosing my problem.




I already have an MSR2000 with a URI connected and all is working ok. But on that repeater no other cards but the receiver and the exiter are inserted in the cage. Even the lien driver are out as I connect directly to the exiter pin 11 to insert the signal. pin 7 for PTT and 10 for ground. And I connect to the exiter out from the receiver for signal output. 




Now on his system if I do the same and try to run the allstar node while his ssytem is just disable. the audio is cracky and sound like if the repeater is out of frequency. I did a link test and the audio was alos bad at the output of the other system meaning that the source was the problem, not the local output.. Linked system sounded great localy. So I am to assumed that we are kind of overloading the disciminator or am I wrong?




If so anyone have a small schematic of an op-amp that could boost this up and have a HIGH impédence enough load that I could have both controler connected?




Thnaks




Pierre

VE2PF.
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