<p dir="ltr">I seem to recall some people having issues with the PTT output not being pulled low enough, you might try searching the list archives for a similar situation. I recall several fixes from adding a reed relay, inserting a diode in line, or using a transistor buffer, might have been a jfet. </p>
<p dir="ltr">Steve </p>
<div class="gmail_quote">On Mar 1, 2016 10:03 AM, "Jon Rorke" <<a href="mailto:jrorke@cogeco.ca">jrorke@cogeco.ca</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">He did say the COR #2 has a pullup resistor connected.<br>
<br>
According to the wiring below you have the controller ptt connected to the ctcss input on the URI.<br>
You have the ctcss input set to 'no' so the URI will not see the ptt from the controller.<br>
<br>
I dont know what he pinouts on the controller are with out looking at the docs but do the following:<br>
<br>
Connect the URI ptt to the controller cor input.<br>
Connect the URI cor input (pin 8) to the controllers PTT output.<br>
Connect the URI TX audio out to the controller RX audio input.<br>
Connect the URI RX audio input to the controller TX audio output.<br>
<br>
Make sure the controller port access is configured for carrier squelch (COR) active low only and not CTCSS and COR.<br>
<br>
Set the node usbradio to use carrierfrom=usbinvert.<br>
<br>
Restart the node.<br>
<br>
Jon VA3RQ<br>
<br>
<br>
On 3/1/2016 9:27 AM, <a href="mailto:mike@midnighteng.com" target="_blank">mike@midnighteng.com</a> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I "think" the problem you are having has a simple fix.<br>
<br>
I don't know the specifics on the DMK URI<br>
<br>
but a PTT normally switches to ground when active does not mean that it is high<br>
when inactive. It can "FLOAT". 0v and no ground when inactive.<br>
<br>
The COR on the CAT1000 will be looking for a voltage when "INACTIVE" if you have<br>
'active low' switch enabled. And without it, it will time-out.<br>
<br>
You need to pull the PTT/COR line high with a 5v voltage and let the PTT pull it<br>
low for active signal.<br>
<br>
If you look at the CAT schematics, there is a test post for audio that you can hook<br>
a small amplified speaker to and listen to the events on the cat1000 for better<br>
testing.<br>
<br>
...mike/kb8jnm<br>
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I am having some problems getting PTT action on a repeater I am converting from<br>
IRLP to Allstar.<br>
<br>
The DMK-URI is interfaced to the secondary port of a CAT-1000 controller. And the<br>
controllers second port is configured as active low. There is a 10k pull-up<br>
resistor on the CAT controller's COR#2 line.<br>
<br>
URI DMK-URI CAT-1000 CAT-1000<br>
Pin 1 PTT Pin 5 COR #2<br>
Pin 7 CTCSS DET Pin 9 PTT #2<br>
Pin 8 COR DET<br>
Pin 20 GND Pin 17 GND<br>
Pin 21 MIC IN AC Pin 23 TX AUDIO #2<br>
Pin 22 LEFT OUT Pin 12 Rx AUDIO #2<br>
<br>
<br>
And I am using these settings:<br>
<br>
eeprom=0<br>
hdwtype=0<br>
rxboost=0<br>
carrierfrom=usbinvert<br>
ctcssfrom=no<br>
txmixa=voice<br>
txmixb=no<br>
invertptt=0<br>
duplex=1<br>
plfilter=no<br>
deemphasis=no<br>
preemphasis=no<br>
rxaudiodelay=0<br>
<br>
Running asterisk -r shows that its supposed to be playing the time<br>
(etc), but it never keys.<br>
<br>
Suggestions welcome.<br>
Thanks<br>
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