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This makes no sense:<br>
<br>
<p><i>Half Duplex Radios</i><i><br>
</i><i>
Half duplex radios will require the use of a second node which
has had the transmit level properly set, and is not transmitting
a CTCSS tone. The second node must be receivable by your service
monitor or deviation meter but does not need to be co-located
with the node undergoing the receive level adjustment. The CODEC
used to send audio to the second node must either be uLAW or
ADPCM. The GSM codec will give inaccurate results.</i></p>
<i>
</i>
<ol>
<li><i>Using the Asterisk CLI, connect the node to be adjusted to
the transmit node: </i><i><code>rpt fun yournodenum
*3txnodenum</code></i>
</li>
<li><i>Monitor the deviation of the second node's transmitter on
the service monitor while simultaneously injecting a 1KHz tone
at 3KHz on the receiver on the first node.
</i></li>
<li><i>Adjust the receive level pot until you see 3KHz of
deviation on the transmit frequency.
</i></li>
<li><i>Disable the signal on the receiver. The receive audio level
is now set.
</i></li>
<li><i>Disconnect the receive node from the transmitter: </i><i><code>rpt
fun yournodenum *1txnodenum</code></i></li>
</ol>
<p><br>
</p>
<div dir="ltr" style="font-size: 16px; font-family: monospace; left:
123.067px; top: 673.467px; transform: scale(0.996111, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_156_0"
data-canvas-width="172.12800512981414">Why use another node to set
levels on a simplex node?<br>
<br>
<br>
<br>
I use this procedure for simplex and duplex nodes. Works
perfectly:</div>
<br>
<b><big>Adjusting Audio Levels<br>
This howto describes how to properly set audio levels on an ACID
system interfaced to a radio.<br>
<br>
Required Equipment<br>
Communications service monitor, or deviation meter and FM signal
generator.<br>
<br>
<br>
Preliminary Checks<br>
Modify the config files for the type of radios you have
(repeater or halfduplex)<br>
and the type of carrier<br>
detection you want to do.<br>
Make sure your radio is connected to the USB interface and
turned on before proceeding.<br>
Procedure<br>
<br>
<br>
From the Asterisk CLI, (to get into the Asterisk CLI, type
asterisk r<br>
from a root shell) set the<br>
receiver noise baseline (with no signal on the receiver
frequency) as follows:<br>
radio tune rxnoise<br>
<br>
<br>
Set the receive audio input level by suppling an FM signal at
1KHz with 3KHz of deviation (with no<br>
CTCSS) on the receiver's frequency. then once the signal is
present, type:<br>
radio tune rxvoice<br>
<br>
Set the CTCSS tone level by supplying a CTCSS tone at 600Hz
deviation your desired frequency (with<br>
no other modulation), and type:<br>
radio tune rxtone<br>
<br>
<br>
Save the receiver levels by typing:<br>
radio tune save<br>
<br>
<br>
Set the CTCSS tone level to zero by typing:<br>
<br>
radio tune txtone 0<br>
<br>
To set the transmit audio level, monitor the transmitter with a
deviation meter and start with<br>
the setting of 500 (which is the midpoint) by typing:<br>
radio tune txvoice 500<br>
<br>
This will cause the transmitter to be keyed, and a brief tone be
sent so that you can measure the<br>
transmit audio level with your deviation meter or service
monitor. The last parameter is an audio level<br>
setting with a range of 000 to 999. Set the number to that which
gives you 3KHz of deviation. <br>
<br>
Repeat the radio tune txvoice command using different numbers
(successive approximation) until<br>
you get the desired 3 KHz of deviation.<br>
<br>
<br>
Set the TX CTCSS tone level by typing the following:<br>
radio tune txtone 500<br>
<br>
This will cause the transmitter to be keyed, and a brief CTCSS
tone be sent so that you can measure the<br>
TX CTCSS level with your deviation meter or service monitor.<br>
<br>
The last parameter is a TXCTCSS level<br>
setting with a range of 000 to 999. Set the number to that which
gives you 0.6 KHz of deviation.<br>
Repeat the radio tune command using different numbers until you
get the desired 0.6 KHz of deviation.<br>
<br>
Save the settings by typing<br>
radio tune save<br>
<br>
<br>
You may now test the setup to see if the audio levels are
acceptable.</big></b><br>
<br>
73<br>
Jim W7RY<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/20/2013 8:54 PM, Tim Sawyer
wrote:<br>
</div>
<blockquote cite="mid:96EF0824-67A9-4842-BB4F-4E4AA45DAA6C@me.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<base href="x-msg://1024/">Try this one <a moz-do-not-send="true"
href="http://ohnosec.org/drupal/node/28">http://ohnosec.org/drupal/node/28</a><br>
<div>
<span class="Apple-style-span" style="border-collapse: separate;
color: rgb(0, 0, 0); font-family: Verdana; font-size: medium;
font-style: normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: normal; orphans: 2;
text-align: auto; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-border-horizontal-spacing: 0px;
-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width:
0px; "><span class="Apple-style-span" style="border-collapse:
separate; color: rgb(0, 0, 0); font-family: Verdana;
font-size: medium; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
normal; orphans: 2; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-border-horizontal-spacing: 0px;
-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width:
0px; ">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space; ">--<br>
Tim<br>
:wq</div>
</span></span>
</div>
<br>
<div>
<div>On Oct 20, 2013, at 8:34 PM, Doug Crompton <<a
moz-do-not-send="true" href="mailto:doug@crompton.com">doug@crompton.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div class="hmmessage" style="font-size: 12pt; font-family:
Calibri; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
normal; orphans: 2; text-align: -webkit-auto; text-indent:
0px; text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; ">
<div dir="ltr"><font face="Tahoma">The following link is no
longer valid. Does anyone have a replacement link for
this info?<br>
<br>
Apparently the<span class="Apple-converted-space"> </span><a
moz-do-not-send="true" href="http://qrvc.com">qrvc.com</a><span
class="Apple-converted-space"> </span>domain no longer
exists.<br>
<br>
For a guide on setting up and configuring Asterisk,
app_rpt, and chan_usbradio.c please see<span
class="Apple-converted-space"> </span><br>
<a moz-do-not-send="true"
href="http://apprpt.qrvc.com/usbradio.pdf">http://apprpt.qrvc.com/usbradio.pdf</a><br
id="FontBreak">
</font><br>
<b><font style="font-size: 16pt; " size="4">73 Doug</font><font
style="font-size: 16pt; " size="4"><br>
</font><font style="font-size: 16pt; " size="4">WA3DSP</font><font
style="font-size: 16pt; " size="4"><br>
</font><font style="font-size: 16pt; " size="4"><a
moz-do-not-send="true"
href="http://www.crompton.com/hamradio">http://www.crompton.com/hamradio</a></font></b><font
style="font-size: 16pt; " size="4"><br>
</font></div>
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</blockquote>
</div>
<br>
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