Motorola CDR700 link radio problem

[ivica_yt4x]

Regards to all,

Does anyone have experience with adding a link radio to the Motorola CDR700 repeater, specifically the repeater consists of two devices motorola GM340 and HLN3333B rick interface, to the accesorry connector HLN3333b interface I would add Motorola CM340 link radio that would work as a simplex link, I managed to set up that when the rx station in the repeater receives the signal the link station goes to transmit and broadcast audio, but I can not adjust that when the link station receives the signal audio passes through the tx station repeater, the signal passes but with a large background noise.Any help?

Ivica

 

[cmdrwill]

Now one has found out why one does NOT use the dammed R.I.C.K.

 

[ramal121]

I agree. The RICK manual is the most complicated convoluted thing I have ever seen for a simple cross-connect circuit. Can I steer you to another repeater controller that has a link port included? Does not need to be expensive. Will save on hair.

But to answer your question, what background noise are you getting on link receive? Is it like open squelch static? If it is then I bet you have JU-551 in the wrong position in the receive radio.

 

[ivica_yt4x]

Yes i get like open squelch noise it can hear modulation but maybe 10% i dont have ju-551 on radio,the radios are Motorola GM340 main rx and tx in repeater and motorola cm340 as vhf link radio.Motorola GM340 is same like CDM750 in US i today make a video

 

[ramal121]

Whoops. Was thinking of the GM radios I used to set up. In your model you should be able to change the RX Audio Type with the programming software.

 

[cmdrwill]

RX Audio Type should be Filtered and Squelched.

 

[ivica_yt4x]

Yes its filtered and squelched and it works ok some time,then when signal receive on link radio i get noise like open squelch in the audio and maybe 20% of modulation in background,i tonight reprogram all three radios and now it works.Now i scare to backt it to site it may again be the same after some time.Here is the video.

 

[ramal121]

OK. Yes you should use filtered (emphasized and de-emphasized ) audio with a squelch gate for repeater applications unless you need flat audio for special applications.

So the receive audio from both the receiver and aux (link) port are simply connected together. COR (or COR and PL) from either will open the audio gate and assert PTT to the transmit radio. With both receivers connected at the same time, their audio is summed and presented to the transmitter mic input while the transmitter is on.

The link radio should have clean audio as you are transmitting into it, but does the repeater receive radio also react to the UHF transmissions? What I mean does the LED flash for receive and do you hear any noise from the receive radio speaker? Anytime the link radio is receiving, anything that breaks squelch from the receive radio will also be added into the mix.

 

[ivica_yt4x]

Hallo ramal121 and guys

This is current setup first is UHF RX station

 

[ivica_yt4x]

First is uhf rpt rx station,then uhf rpt tx station,then link station and on the end rick configuration

 

[ivica_yt4x]

OK. Yes you should use filtered (emphasized and de-emphasized ) audio with a squelch gate for repeater applications unless you need flat audio for special applications.

So the receive audio from both the receiver and aux (link) port are simply connected together. COR (or COR and PL) from either will open the audio gate and assert PTT to the transmit radio. With both receivers connected at the same time, their audio is summed and presented to the transmitter mic input while the transmitter is on.

The link radio should have clean audio as you are transmitting into it, but does the repeater receive radio also react to the UHF transmissions? What I mean does the LED flash for receive and do you hear any noise from the receive radio speaker? Anytime the link radio is receiving, anything that breaks squelch from the receive radio will also be added into the mix.

Yes when link radio receiving the red led on GM340 uhf receiver also blinkig