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<body class='hmmessage'><div dir='ltr'><font style="" color="#000000" face="Tahoma,sans-serif">Eric,<br><br> Glad to hear you got it going. plfilter when activated applies a highpass filter to help to eliminate incoming PL tones. They are not so noticable on a handheld but would be very objectionable on an iaxrpt connection with full range speakers. <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">http://www.crompton.com/hamradio</font></b><font style="font-size:16pt;" size="4"><br></font><br><br><div><hr id="stopSpelling">From: EUglum@aol.com<br>Date: Mon, 22 Dec 2014 14:24:43 -0500<br>Subject: Re: [App_rpt-users] Beagle Bone DTMF issues<br>To: doug@crompton.com<br><br>
<font id="ecxrole_document" color="#000000" face="Arial" size="2">
<div> Thanks Doug! De-emphasis was set backward on the 900 repeater. DTMF
works like magic now. Just for my own education, what does plfilter do? Many
Thx!</div>
<div> </div>
<div>-Eric (KB6BZZ) </div>
<div> </div>
<div>
<div>In a message dated 12/22/2014 9:33:10 A.M. Pacific Standard Time,
doug@crompton.com writes:</div>
<blockquote style="PADDING-LEFT:5px;MARGIN-LEFT:5px;BORDER-LEFT:blue 2px solid;"><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2">
<div dir="ltr"><font color="#000000" face="Tahoma,sans-serif">My thinking is your
problem is either levels or maybe you are running non deemphasized audio with
simpleusb causing unequal tome levels. If so you need to program the Motorola
for deemphasized audio out OR set the deemphasis=yes in
simpleusb.conf. You should also run plfilter=on which is the
default.<br><br>Skewed equalization can definitely cause poor or no DTMF
decoding. The radio relaxed should have nothing to do with
it.<br> <br>The BBB DTMF decoding works fine if the levels and
equalization are correct out of the radio.<br><br>YHou also need to use
preemphasis going into the Motorola with simpleusb or your audio will sound
flat (lacking high-end) at the other rx end. There is no SW setting for this.
<br><br></font><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">http://www.crompton.com/hamradio</font></b><font style="FONT-SIZE:16pt;" size="4"><br></font><br><br>
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<hr id="ecxstopSpelling">
From: EUglum@aol.com<br>Date: Mon, 22 Dec 2014 11:57:29 -0500<br>To:
app_rpt-users@ohnosec.org<br>Subject: [App_rpt-users] Beagle Bone DTMF
issues<br><br><font id="ecxrole_document" color="#000000" face="Arial" size="2">
<div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2"> I just successfully installed Doug's
(WA3DSP) Beagle Bone Black installation on a two node repeater system using
two URI's and a Belkin 4 port USB hub in an attempt to remove my power hungry
old P4 rack server from All Star service. Everything seems to be running well
on the BBB with only 14% CPU usage on stand by (2 nodes) and little to no
audio distortion while testing. </font></div>
<div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2"></font> </div>
<div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2"> I am having a heck of a time getting either node to reliably
decode DTMF especially when using Motorola transceivers. (On the old
P4 server, the DTMF decoded remarkably well using any radio...) I have
been looking at the old P4 config files and comparing them to the BBB config
in an attempt to see what has changed... Doug has "radio relax" turned off by
default (normally on by default in the acid release). Is this relevant?
Thanks!</font></div>
<div> </div>
<div>-Eric (KB6BZZ) </div>
<div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2"></font> </div>
<div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2"></font></div><font style="BACKGROUND-COLOR:transparent;" color="#000000" face="Arial" size="2">
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