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Motorola R1225 VHF Repeater to a Motorola Radius Lowband

Posted: Sun Feb 22, 2004 6:16 pm
by nick.dejohn
Hello:

I am trying to connect a Motorola R1225 VHF Repeater to a Motorola Radius Lowband Mobile so that I can have a crossband repeater. I have the R1225 going into a TPL AMP so that I can acheive 100 Watts of power out. I need th repeater so that I can get portable coverage in my area. I need to connect the repeater to lowband because my local fire department is operating on lowband. I am utilizing a RICK Controller to interface between the two components. I have it going one way but not the other. If I transmit on a VHF portable, I can hear the audio come out on a lowband mobile. If I transmit on a lowband mobile, I can not here the audio on a VHF portable. I only get the flat carrier white noise. The noise that I am getting is a "white noise". I have tried a bunch of different configurations, and nothing. Can someoner please help!!!

Thanks,
Nick

Posted: Sun Feb 22, 2004 11:46 pm
by Will
Nick, time to look at some tech. info that can help.

First there are a bunch of dammned DIP switches in the RICK and some may not be correct, also check the Ju501 in the Low band radio.

Look here for more help.. http://www.webimaging.com/echocomm/

Motorola R1225 VHF Repeater to a Motorola Radius Lowband

Posted: Mon Feb 23, 2004 1:20 pm
by nick.dejohn
Will:

Thanks for the reply. I have check and double checked all of the dip switches in the RICK. They all seem to be in the proper order. I have them set for bi-directional. I have changed the JU551 jumper inside the lowband to what the RICK Instructions tell me to do. I didn't see anything for the JU501. Do you think that I have to change anything inside the R1225 Transceiver?

Thanks,
Nick

Posted: Tue Feb 24, 2004 12:47 am
by Will
Nick, seems you are not getting TX audio on the R1225 from the Low Band radio, Ok lets look at some possible points to check.
1) External Mic input on Pin 2 not enabled. (R1225)
2) RX Audio output, (R1225) program for Muted and De-emphasized.