<div dir="ltr">Thank you for the information. It is a URIx<div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">--Bret Taylor<div>Olympia School District</div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 11, 2019 at 5:32 AM Kevin Custer <<a href="mailto:kuggie@kuggie.com">kuggie@kuggie.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<div class="gmail-m_289715978928308540moz-cite-prefix">I apologize - this is long, but it's
necessary (I think)? <br>
<br>
The COS and PL "hardware" logic inputs on the radio adapter were
originally the volume-up and volume-down functions, actuated by
manual (push button tactile) switches in a standard audio adapter
(FOB). These inputs are internally pulled high, to 3.3 V, and
have to be pulled low enough to become valid. As such the
push-button switches made a good ground when depressed, as that's
what the other side of the switch was tied to - ground. Most
AllStar radio adapters use protection diodes (BAT-43's) that don't
allow voltage to be sent into the CM1XX chip. If voltage is
allowed to be inputted to these pins, the chip is destroyed. So -
with the diodes in place, it doesn't matter what voltage is
present on the COS or CTCSS hardware inputs, because voltage on
these pins doesn't make anything happen, and because of the
protection diodes, doesn't hurt anything if voltage is present.<br clear="none">
<br clear="none">
Okay, so the CM108/119's logic inputs are looking for a ground to
be valid. This "active low" condition is required NO MATTER if
the setting in the conf file is upright or inverted. So - the
setting in the configuration file doesn't change the fact that the
adapter needs an active low to be valid and assert the condition.
All this software setting does is change if the low condition
exists when the radio is hearing a valid signal, or when it's
not. Using a DMM, you can read the voltage on the CM119 side of
the BAT-43 diodes to see if the logic level is properly changing
from 3.3 to 0.0 (or a few tenths of a volt). <br clear="none">
<br clear="none">
Not all radio logic signals are created equal. Some logic
circuits can source current, but lack the ability to sink.
Sometimes active high circuits (circuits that provide a voltage
when the state becomes active) don't have the ability to pull to
ground very well. These circuits may not have the capability to
pull the COS and CTCSS inputs low enough on the radio adapter to
become valid/active. A pull-down resistor can help, but nothing
beats a real active low circuit. A 2N2222 (or similar NPN
transistor) with the emitter grounded usually works well. Use the
collector to feed logic to the radio adapter and use a suitable
bias resistor to the base. Of course, if you happen to find a
place that goes to ground when the receiver is active (or vice
versa), it should work as-is, again, as long as it's active low.
The resistor can be any wattage 1/8 watt or higher. Its value
isn't critical either, a 1k to 47k would likely be acceptable.<br>
<br>
Is the radio adapter a URI, URIx, or URIxB?<br clear="none">
<br clear="none">
Hope this helps..<br clear="none">
<br clear="none">
Kevin W3KKC<br>
<br>
<br>
On 3/11/2019 8:19 AM, Bret Taylor wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Marshall is correct, and Marshall has helped me
with this project as well.... Thank you Marshall.
<div><br>
</div>
<div>I suspect there has to be an underlying configuration file
still. It's still Debian under the hood. If I can get to it,
and modify it... that is still to be seen.</div>
<div><br>
</div>
<div>What wattage does the 47k ohm resistor need to be? 1/8,
1/4, 1/2, 1, 2? Does it matter? Ditto on the NPN transistor.
It sucks radio shack doesn't exist anymore, it's now a pain to
find the components locally.</div>
<div><br>
</div>
<div>Thanks</div>
<div><br clear="all">
<div>
<div dir="ltr" class="gmail-m_289715978928308540gmail_signature">
<div dir="ltr">--Bret Taylor
<div>Olympia School District</div>
</div>
</div>
</div>
<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, Mar 10, 2019 at 10:54
PM Marshall Oldham <<a href="mailto:ke6pcv@cal-net.org" target="_blank">ke6pcv@cal-net.org</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="white" lang="EN-US">
<div class="gmail-m_289715978928308540gmail-m_1055963262346949359WordSection1">
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">FYI,
</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">He
is not using app_rpt software with the URI, he is
using the Bridgecom MV-iL hardware with a URI to
interface to his GE Mastr III</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">So
he can not set CORFROM=uisbinvert in software config.</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">73
</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Marshall
</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<div>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(181,196,223);padding:3pt 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10pt;font-family:Tahoma,sans-serif;color:windowtext">From:</span></b><span style="font-size:10pt;font-family:Tahoma,sans-serif;color:windowtext">
App_rpt-users [mailto:<a href="mailto:app_rpt-users-bounces@lists.allstarlink.org" target="_blank">app_rpt-users-bounces@lists.allstarlink.org</a>]
<b>On Behalf Of </b>REDBUTTON_CTRL<br>
<b>Sent:</b> Saturday, March 09, 2019 5:24 PM<br>
<b>To:</b> <a href="mailto:app_rpt-users@lists.allstarlink.org" target="_blank">app_rpt-users@lists.allstarlink.org</a><br>
<b>Subject:</b> Re: [App_rpt-users] GE Mastr III
and DMK USB-URI</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Bret, one thing to know about the URI
is that the COR input line (pin 8) requires a signal
transition to pull to ground. This is different that a
signal that sources voltage and goes low. the URI has
internal pullup resistors so it doesn't look for voltage
change.<br>
<br>
So what this means is if the CAS/COR out line on the
Master III does not pull to ground when it goes low, the
URI will not see a signal change. The URI has a dc
blocking diode on its input. So it needs to see a signal
that either goes low when the receiver is active or when
it is inactive.<br>
<br>
If the Master III CAS/COR is active hi then I suggest
you connect the CAS/COR through a 47K resistor then to
the base of an NPN transistor. Then connect the
collector to pin 8 on the URI and connect the emitter to
gorund. This will invert the CAS/COR signal and give an
open collector that goes to ground on receiver activity.<br>
<br>
Then in the Allstar node set the CORFROM=usbinvert.<br>
<br>
This means the URI will be looking for a signal to
ground pin 8. then audio will be sent through the
system.<br>
<br>
Hope this helps.<br>
<br>
Regards, <br>
<br>
Jon VA3RQ<br>
<br>
On 3/9/2019 8:26 AM, Bret Taylor wrote: </p>
<div>
<div>
<div>
<p class="MsoNormal">"What channel driver are you
running? This will determine what sort of audio<br>
you need from the system and where squelch is
performed." </p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I'm using a Bridgecom MV-i1
to drive the URI - <a href="https://www.bridgecomsystems.com/collections/tl-net/products/mv-1" target="_blank">https://www.bridgecomsystems.com/collections/tl-net/products/mv-1</a></p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I don't know exactly what is
under the hood. Their "OS" is called TL-Net. But
under that is Raspbian. I have a network of TRBO
repeaters that the MV-i1 taps into through IP
Site Connect.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I'm trying to bridge the TRBO
repeaters to this Mastr III base station. I've
already created a cable using the info from <a href="http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html" target="_blank">http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html</a></p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I created a bridge group in
TL-Net to bridge the analog interface to IPSC
masters. I can PTT on a DMR programmed to the
correct Call Group, and hear it on a Analog
radio tuned to the Mastr III frequency. But I
can not hear the Analog radios return, it
doesn't seem to trigger the URI.<br clear="all">
</p>
<div>
<div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">If I use pin 8 on the
URI (active low) and connect it to P5-17,
or P5-20 (COR & CTCSS both Active
High) on the Mastr III backplane, the URI
goes into a broadcast storm. Using any of
the optional pins for COR (2 & 3 both
listed as active high) nothing happens. I
suspect since these are GPIO, the
configuration (for the URI?) is
incorrect. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I know the URI works,
as I was able to use it to drive an
XPR5550e programmed to the analog
frequency of the Mastr III. It's just not
the best situation to run it like that.
You clearly hear dispatch, but since I'm
not tapped onto the return path of the
antenna connected to the Mastr III, the
mobiles response clarity is dependent on
the proximity to the antenna of the
XPR5550e.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">"Double check your
programing too, as the Mastr III IO is
based on programing.</p>
</div>
<p class="MsoNormal"> You'll need to ensure
you have your de-empahsis and pre-emphasis
setup<br>
properly too."</p>
</div>
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">I do not have the Mastr
III programming software (and can't seem
to find it anywhere). Another user in this
list says he has it, but it searching for
it. So, I have no idea how it's
programmed. It's possible the backplane
connecters for audio out are disabled? </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Thanks for your help. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">--Bret Taylor </p>
<div>
<p class="MsoNormal">Olympia School
District</p>
</div>
</div>
</div>
</div>
<p class="MsoNormal"> </p>
</div>
</div>
</div>
</div>
</div>
</div>
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