[App_rpt-users] Assistance with TM-d710 and URI-x with DIAL

[Jon Rorke]

First of all the default configs are set for full duplex. (Even if the 
duplex setting is not stated in RPT.conf) Since you are connecting to a 
half duplex radio, you will need to set duplex =1 or 0 in rpt.conf. And 
set the duplex setting in simpleUSB or USBradio to half duplex (duplex=0).

If the node is in full duplex, the moment the URI sees a signal it will 
key the radio.

Also, you need to know what the logic is for the Sq on the PS 2 port on 
the Kenwood.

Does the line go HI on RX or go low?

Once you have determined the cor logic, you need to know if it pulls to 
ground when it goes low.

The COR and PL decode inputs on the URI need to see a signal that 
transitions to ground. It doesn't matter if its active hi or low. The 
URI will never see an input signal if it it simply goes hi but doesn't 
go to ground.

If the kenwood signal doesn't go to ground then you may need to drive an 
NPN transistor and connect the collector to the URI so it sees a 
transition to ground.

The URI doesnt care about input voltage, it only cares if the input was 
grounded or not. The COR and PL inputs are pulled up internally and 
diode isolated.

also check to see if the SQ line goes active during transmit on the 
Kenwood.

I had this problen on an Icom ic 208 when connected to the packet port. 
the SQ line was active on receive and transmit.

I had to use DSP and the discriminator connection on the PS 2 port to 
get around that.

Hope this helps

On 9/6/2016 8:20 PM, Michael J. Wolthuis wrote:
>
> I am helping a friend with a new node.  He has a URI-X, Kenwood 
> TM-d710 and DIAL.
>
> TX audio is working fine.
>
> RX audio is not.  I have the usbradio.conf file set with carrierfrom=usb
>
> If I change it to carrierfrom=usbinvert then I can get DTMF through 
> and audio, but it is keyed 100% of the time and no TXAudio works.
>
> So it seems it should be set for usb.
>
> I tried DSP, didn’t seem to work either.
>
> The cable between the URI-X and the d710 uses the PS2 connector and is 
> a pre-made cable from uricables.com
>
> I am at a loss of what else to try, should I build the loopback tester 
> that I see in the archives?
>
> Mike
>
> Kb8zgl
>
>
>
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