<div dir="ltr">Here is the schematic of the hamtronics output:<div><a href="http://amsatnet.info/r303out.png">amsatnet.info/r303out.png</a></div><div><br></div><div>Isn't R34 and C44 a lowpass??</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 28, 2016 at 11:51 AM, Skyler F <span dir="ltr"><<a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I think normal would be disc., the only other display is deemphasized and CTCSS filtered</div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 28, 2016 at 11:36 AM, Steve Agee <span dir="ltr"><<a href="mailto:n5zua@earthlink.net" target="_blank">n5zua@earthlink.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<big><tt>For this exercise, audio is either referenced as pre-emphasized
(discriminator) or de-emphasized (speaker). So, by "normal" do
you mean discriminator?<br>
<br>
N5ZUA<br>
</tt></big><div><div><br>
<div>On 3/28/2016 12:30 PM, Skyler F wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Actually, the normal audio output is probably what
is needed, not de-emph. Again with the 10µF capacitor.
<div>
<div><br>
</div>
<div><br>
</div>
<div>Here is my entire output when I get Normal Audio as good
as I can get it. Everything passes except for 3200Hz.</div>
<div><br>
</div>
<div>
<p><span>Testing level at 100 Hz for
Normal Audio</span></p>
<p><span>Testing level at 320 Hz for
Normal Audio</span></p>
<p><span>Testing level at 500 Hz for
Normal Audio</span></p>
<p><span>Testing level at 1000 Hz for
Normal Audio</span></p>
<p><span>Testing level at 2000 Hz for
Normal Audio</span></p>
<p><span>Testing level at 3200 Hz for
Normal Audio</span></p>
<p><span>Error -- Measured 10755, should
have been between 6929 and 9374</span></p>
<p><span>Testing level at 100 Hz for CTCSS
Filtered Audio</span></p>
<p><span>Error -- Measured 11719, should
have been between 100 and 451</span></p>
<p><span>Testing level at 320 Hz for CTCSS
Filtered Audio</span></p>
<p><span>Testing level at 500 Hz for CTCSS
Filtered Audio</span></p>
<p><span>Testing level at 1000 Hz for
CTCSS Filtered Audio</span></p>
<p><span>Testing level at 2000 Hz for
CTCSS Filtered Audio</span></p>
<p><span>Error -- Measured 12326, should
have been between 8989 and 12162</span></p>
<p><span>Testing level at 3200 Hz for
CTCSS Filtered Audio</span></p>
<p><span>Error -- Measured 11827, should
have been between 6929 and 9374</span></p>
<p><span>Testing level at 1000 Hz for
De-Emphasized Audio</span></p>
<p><span>Error -- Measured 45868, should
have been between 9798 and 13257</span></p>
<p><span>Testing level at 2000 Hz for
De-Emphasized Audio</span></p>
<p><span>Error -- Measured 41568, should
have been between 4380 and 6155</span></p>
<p><span>Testing level at 3200 Hz for
De-Emphasized Audio</span></p>
<p><span>Error -- Measured 43439, should
have been between 2271 and 3073</span></p>
<p><span>Testing level at 3200 Hz for
Squelch Noise Detector</span></p>
<p><span>Error -- Measured 436, should
have been between 0 and 50</span></p>
<p><span>Testing level at 6000 Hz for
Squelch Noise Detector</span></p>
<p><span>Testing level at 7200 Hz for
Squelch Noise Detector</span></p>
<p>
</p>
<p><span>Error -- Measured 264, should
have been between 500 and 1023</span></p>
<p><span><br>
</span></p>
<p><span><br>
</span></p>
<p><span><br>
</span></p>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Mar 28, 2016 at 11:22 AM,
Skyler F <span dir="ltr"><<a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I added a 10µF electrolytic capacitor in
series with the Discriminator output of my hamtronics, but
was still not able to get the squelch calibrated. Here was
the diagnostic output:
<div>
<p><span>Testing level at 1000 Hz for De-Emphasized
Audio </span></p>
<p><span>Testing level at 2000 Hz for De-Emphasized
Audio</span></p>
<p><span>Error -- Measured 9581, should have been
between 4380 and 6155</span></p>
<p><span>Testing level at 3200 Hz for De-Emphasized
Audio</span></p>
<p><span>Error -- Measured 10030, should have been
between 2271 and 3073</span></p>
<p><span>Testing level at 3200 Hz for Squelch Noise
Detector</span></p>
<p><span>Error -- Measured 279, should have been between
0 and 50</span></p>
<p><span>Testing level at 6000 Hz for Squelch Noise
Detector</span></p>
<p><span>Testing level at 7200 Hz for Squelch Noise
Detector</span></p>
<p><span>Error -- Measured 211, should have been between
500 and 1023</span></p>
</div>
</div>
<div>
<div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, Mar 27, 2016 at 10:53
PM, Eric Guth <span dir="ltr"><<a href="mailto:eric@efratnetworks.net" target="_blank"></a><a href="mailto:eric@efratnetworks.net" target="_blank">eric@efratnetworks.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">10
Uf , 35VDC will usually do the job.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">73,
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Eric
Guth</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">4Z1UG</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Allstar:
28422</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.qsotoday.com/" target="_blank"><span style="color:blue">QSO
Today</span></a></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:app_rpt-users-bounces@ohnosec.org" target="_blank">app_rpt-users-bounces@ohnosec.org</a>
[mailto:<a href="mailto:app_rpt-users-bounces@ohnosec.org" target="_blank">app_rpt-users-bounces@ohnosec.org</a>]
<b>On Behalf Of </b>Skyler F<br>
<b>Sent:</b> Monday, March 28, 2016 7:35
AM<br>
<b>To:</b> Bryan Fields<br>
<b>Cc:</b> <a href="mailto:app_rpt-users@ohnosec.org" target="_blank">app_rpt-users@ohnosec.org</a><br>
<b>Subject:</b> Re: [App_rpt-users]
Hamtronics receiver issue with AllStar
RTCM</span></p>
<div>
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Hi Bryan, can you
send me the exact wiring between your
hamtronics and your RTCM? What value
DC blocking capacitor, any jumpers in
the RTCM selected etc...?</p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">73,</p>
</div>
<div>
<p class="MsoNormal">Skyler</p>
</div>
</div>
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">On Sun, Mar 27,
2016 at 5:08 PM, Bryan Fields <<a href="mailto:Bryan@bryanfields.net" target="_blank"></a><a href="mailto:Bryan@bryanfields.net" target="_blank">Bryan@bryanfields.net</a>>
wrote:</p>
<p class="MsoNormal">On 3/27/16 5:12
PM, Skyler F wrote:<br>
> For a voter project, we got the
hamtronics VHF receiver pretuned to
the<br>
> repeaters input frequency. The
idea is to use hamtronics receivers
for<br>
> every voted receive site for
equivalent audio characteristics.<br>
<br>
> So... I hooked a cheap sound
card up to audacity, and took a look
at the<br>
> spectrum of each receiver. The
hamtronics obviously looks like it
lacks<br>
> high frequency noise on the
discriminator output.<br>
<br>
> Does anybody else have
experience with hamtronics
receivers?<br>
<br>
Yes, I have a number of them in
place and find they work perfectly
with the<br>
RTCM. It can give about 2v P-P on
the discriminator pin, and has the
high<br>
frequency compute the RTCM squelch
needs.<br>
<br>
My prime setup is here:<br>
<a href="http://gallery.keekles.org/d/28384-2/0330141929a.jpg" target="_blank">http://gallery.keekles.org/d/28384-2/0330141929a.jpg</a><br>
<br>
Note you'll want to put a cap in
line, as the discriminator is DC
coupled in<br>
the hamtronics. Can you put a scope
on the discriminator line and
measure the<br>
voltage? You might have a problem
with the receiver.<br>
<br>
73's<br>
<span><span style="color:#888888">--</span></span><span style="color:#888888"><br>
<span>Bryan Fields</span><br>
<br>
<span><a href="tel:727-409-1194" target="_blank">727-409-1194</a> -
Voice</span><br>
<span><a href="tel:727-214-2508" target="_blank">727-214-2508</a> -
Fax</span><br>
<span><a href="http://bryanfields.net" target="_blank">http://bryanfields.net</a></span></span></p>
<div>
<div>
<p class="MsoNormal">_______________________________________________<br>
App_rpt-users mailing list<br>
<a href="mailto:App_rpt-users@ohnosec.org" target="_blank">App_rpt-users@ohnosec.org</a><br>
<a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users" target="_blank">http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users</a><br>
<br>
To unsubscribe from this list
please visit <a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users" target="_blank">
</a><a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users" target="_blank">http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users</a> and scroll
down to the bottom of the page.
Enter your email address and
press the "Unsubscribe or edit
options button"<br>
You do not need a password to
unsubscribe, you can do it via
email confirmation. If you have
trouble unsubscribing, please
send a message to the list
detailing the problem.</p>
</div>
</div>
</div>
<p class="MsoNormal"><br>
<br clear="all">
</p>
<div>
<p class="MsoNormal"> </p>
</div>
<p class="MsoNormal">-- </p>
<div>
<div>
<p class="MsoNormal"><span>Skyler
Fennell</span></p>
<div>
<p class="MsoNormal"><span><a href="http://amsatnet.info" target="_blank">amsatnet.info</a></span></p>
</div>
<div>
<p class="MsoNormal"><span>KDØWHB</span></p>
</div>
<div>
<p class="MsoNormal"><span><a href="mailto:electricity440@gmail.com" target="_blank"></a><a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div>
<div dir="ltr"><font color="#38761d" face="arial
narrow, sans-serif">Skyler Fennell</font>
<div><font color="#38761d" face="arial narrow,
sans-serif"><a href="http://amsatnet.info" target="_blank">amsatnet.info</a></font></div>
<div><font color="#38761d" face="arial narrow,
sans-serif">KDØWHB</font></div>
<div><font color="#38761d" face="arial narrow,
sans-serif"><a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a></font></div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div>
<div dir="ltr"><font color="#38761d" face="arial narrow,
sans-serif">Skyler Fennell</font>
<div><font color="#38761d" face="arial narrow, sans-serif"><a href="http://amsatnet.info" target="_blank">amsatnet.info</a></font></div>
<div><font color="#38761d" face="arial narrow, sans-serif">KDØWHB</font></div>
<div><font color="#38761d" face="arial narrow, sans-serif"><a href="mailto:electricity440@gmail.com" target="_blank"></a><a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a></font></div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
App_rpt-users mailing list
<a href="mailto:App_rpt-users@ohnosec.org" target="_blank">App_rpt-users@ohnosec.org</a>
<a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users" target="_blank">http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users</a>
To unsubscribe from this list please visit <a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users" target="_blank">http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users</a> and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. </pre>
</blockquote>
<br>
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><font face="arial narrow, sans-serif" color="#38761d">Skyler Fennell</font><div><font face="arial narrow, sans-serif" color="#38761d"><a href="http://amsatnet.info" target="_blank">amsatnet.info</a></font></div><div><font face="arial narrow, sans-serif" color="#38761d">KDØWHB</font></div><div><font face="arial narrow, sans-serif" color="#38761d"><a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a></font></div></div></div>
</div>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><font face="arial narrow, sans-serif" color="#38761d">Skyler Fennell</font><div><font face="arial narrow, sans-serif" color="#38761d"><a href="http://amsatnet.info" target="_blank">amsatnet.info</a></font></div><div><font face="arial narrow, sans-serif" color="#38761d">KDØWHB</font></div><div><font face="arial narrow, sans-serif" color="#38761d"><a href="mailto:electricity440@gmail.com" target="_blank">electricity440@gmail.com</a></font></div></div></div>
</div>