<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1444142286173_4871" dir="ltr">I picked up some spectrum analyzer software for use with the SDR USB dongles - I'll see what the harmonics are on the 828 modules when they arrive :-)<br></div><div id="yui_3_16_0_1_1444142286173_4656"><span></span></div><div> </div><div class="signature">Steven Donegan<br>KK6IVC General Class FCC License<br>Silver State Car #86<br>www.sscc.us</div><br> <div id="yui_3_16_0_1_1444142286173_5078" style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1444142286173_5077" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1444142286173_5076" dir="ltr"> <hr size="1"> <font id="yui_3_16_0_1_1444142286173_5081" face="Arial" size="2"> <b id="yui_3_16_0_1_1444142286173_5080"><span id="yui_3_16_0_1_1444142286173_5079" style="font-weight:bold;">From:</span></b> David McGough <kb4fxc@inttek.net><br> <b id="yui_3_16_0_1_1444142286173_5083"><span id="yui_3_16_0_1_1444142286173_5082" style="font-weight: bold;">To:</span></b> "app_rpt-users@ohnosec.org" <app_rpt-users@ohnosec.org> <br> <b id="yui_3_16_0_1_1444142286173_5085"><span id="yui_3_16_0_1_1444142286173_5084" style="font-weight: bold;">Sent:</span></b> Tuesday, October 6, 2015 8:05 AM<br> <b id="yui_3_16_0_1_1444142286173_5087"><span id="yui_3_16_0_1_1444142286173_5086" style="font-weight: bold;">Subject:</span></b> Re: [App_rpt-users] Audio detection circuit to generate 'COR'<br> </font> </div> <div id="yui_3_16_0_1_1444142286173_5088" class="y_msg_container"><br><br clear="none">BTW, I meant 1/2 mile coverage.<br clear="none"><br clear="none">On Tue, 6 Oct 2015, David McGough wrote:<br clear="none"><br clear="none">> <br clear="none">> Hi guys,<br clear="none">> <br clear="none">> Yes, I also can confirm that these modules have DIRTY transmitters and RF<br clear="none">> synthesizers...And, their -loud- 2nd harmonics fall squarely in the busy<br clear="none">> 800MHz business/public service band. So, be careful with them, or you may <br clear="none">> have unwanted visitors knocking at your door!!! Without proper filtering, <br clear="none">> even with a small antenna, I'm sure their 2nd harmonic can be heard for <br clear="none">> miles!<br clear="none">> <br clear="none">> Personally, I wouldn't put a lot of effort into building a repeater <br clear="none">> with these--my experience has been that they're not really usable for more <br clear="none">> than a "back yard" repeater (meaning perhaps 1/2 coverage), due to high <br clear="none">> synthesizer noise--you'll never get the receiver to hear very well.<br clear="none">> <br clear="none">> As with everything, you mileage may vary--have fun and experiment! That's<br clear="none">> what ham radio is about! The nice thing about this hardware is that it's<br clear="none">> dirt cheap! BTW, I'm specifically referring to the Dorji DRA818U/DRA818V<br clear="none">> modules here, of which I've got several.<br clear="none">> <br clear="none">> 73, David KB4FXC<br clear="none">> <br clear="none">> <br clear="none">> <br clear="none">> On Tue, 6 Oct 2015, Steve Zingman wrote:<br clear="none">> <br clear="none">> > Steve,<br clear="none">> > Be aware that those transmitters are dirty.<br clear="none">> > There is a note about a module using the same RF circuit on Doug's <br clear="none">> > HAMVIOP site.<br clear="none">> > He suggests a filter. REQUIRED if you are going to drive a amp or even <br clear="none">> > connect it to a antenna!<br clear="none">> > <br clear="none">> > 73, Steve N4IRS<br clear="none">> > <br clear="none">> > On 10/6/2015 9:13 AM, Steven Donegan wrote:<br clear="none">> > > Thanks. For my first full duplex repeater (for test/learning purposes) <br clear="none">> > > I am going with 2 of those modules and a 6 cavity duplexor (likely of <br clear="none">> > > the 'notch' variety). If it works out may put my Mirage BD-35 on the <br clear="none">> > > TX side before the duplexor and get ~16 watts for giggles.<br clear="none">> > > Steven Donegan<br clear="none">> > > KK6IVC General Class FCC License<br clear="none">> > > Silver State Car #86<br clear="none">> > > www.sscc.us<br clear="none">> > ><br clear="none">> > > ------------------------------------------------------------------------<br clear="none">> > > *From:* Steve Zingman <<a shape="rect" ymailto="mailto:szingman@msgstor.com" href="mailto:szingman@msgstor.com">szingman@msgstor.com</a>><br clear="none">> > > *To:* Steven Donegan <<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>><br clear="none">> > > *Sent:* Tuesday, October 6, 2015 6:10 AM<br clear="none">> > > *Subject:* Re: Audio detection circuit to generate 'COR'<br clear="none">> > ><br clear="none">> > > I'll send you the info tonight when I get home. I have a couple of them.<br clear="none">> > ><br clear="none">> > ><br clear="none">> > ><br clear="none">> > > On 10/6/2015 9:10 AM, Steven Donegan wrote:<br clear="none">> > >> Thanks Steve! I'll look into that as well.<br clear="none">> > >> Steven Donegan<br clear="none">> > >> KK6IVC General Class FCC License<br clear="none">> > >> Silver State Car #86<br clear="none">> > >> www.sscc.us <<a shape="rect" href="http://www.sscc.us/" target="_blank">http://www.sscc.us/</a>><br clear="none">> > >><br clear="none">> > >> ------------------------------------------------------------------------<br clear="none">> > >> *From:* Steve Zingman <<a shape="rect" ymailto="mailto:szingman@msgstor.com" href="mailto:szingman@msgstor.com">szingman@msgstor.com</a>> <br clear="none">> > >> <mailto:<a shape="rect" ymailto="mailto:szingman@msgstor.com" href="mailto:szingman@msgstor.com">szingman@msgstor.com</a>><br clear="none">> > >> *To:* Steven Donegan <<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>> <br clear="none">> > >> <mailto:<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>>; "<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>" <br clear="none">> > >> <mailto:<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>> <<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>> <br clear="none">> > >> <mailto:<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>><br clear="none">> > >> *Cc:* "<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>" <mailto:<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>> <br clear="none">> > >> <<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>> <mailto:<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>><br clear="none">> > >> *Sent:* Tuesday, October 6, 2015 6:06 AM<br clear="none">> > >> *Subject:* Audio detection circuit to generate 'COR'<br clear="none">> > >><br clear="none">> > >> Steve COR or actually RUS "Receiver Un Squelch" is available in that <br clear="none">> > >> radio. You have to unsolder the shield to get to it.<br clear="none">> > >><br clear="none">> > >> 73, Steve<br clear="none">> > >><br clear="none">> > >><br clear="none">> > >><br clear="none">> > >> On 10/6/2015 8:56 AM, Steven Donegan wrote:<br clear="none">> > >>> Well, it is a generic question - any radio without COR. The specific <br clear="none">> > >>> model in my case is a UHF radio module model # SA-828U: <br clear="none">> > >>> <a shape="rect" href="http://www.alibaba.com/product-detail/1W-5km-distance-SA828-U-uhf_60092524887.html?spm=a2700.7724857.29.62.Xbg6c5" target="_blank">http://www.alibaba.com/product-detail/1W-5km-distance-SA828-U-uhf_60092524887.html?spm=a2700.7724857.29.62.Xbg6c5</a><br clear="none">> > >>> Steven Donegan<br clear="none">> > >>> KK6IVC General Class FCC License<br clear="none">> > >>> Silver State Car #86<br clear="none">> > >>> www.sscc.us <<a shape="rect" href="http://www.sscc.us/" target="_blank">http://www.sscc.us/</a>><br clear="none">> > >>><br clear="none">> > >>> ------------------------------------------------------------------------<br clear="none">> > >>> *From:* Skyler Fennell <<a shape="rect" ymailto="mailto:electricity440@gmail.com" href="mailto:electricity440@gmail.com">electricity440@gmail.com</a>> <br clear="none">> > >>> <mailto:<a shape="rect" ymailto="mailto:electricity440@gmail.com" href="mailto:electricity440@gmail.com">electricity440@gmail.com</a>><br clear="none">> > >>> *To:* Steven Donegan <<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>> <mailto:<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>><br clear="none">> > >>> *Cc:* <a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a> <mailto:<a shape="rect" ymailto="mailto:app_rpt-users@ohnosec.org" href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>><br clear="none">> > >>> *Sent:* Tuesday, October 6, 2015 5:47 AM<br clear="none">> > >>> *Subject:* Re: [App_rpt-users] Audio detection circuit to generate 'COR'<br clear="none">> > >>><br clear="none">> > >>> <a shape="rect" href="http://www.aaroncake.net/circuits/vidswitch.asp" target="_blank">http://www.aaroncake.net/circuits/vidswitch.asp</a><br clear="none">> > >>><br clear="none">> > >>> That might work, I use it for packet.<br clear="none">> > >>><br clear="none">> > >>> What radio are you on?<br clear="none">> > >>><br clear="none">> > >>> Sent from my iPhone<br clear="none">> > >>><br clear="none">> > >>><br clear="none">> > >>><br clear="none">> > >>> On Oct 6, 2015, at 6:29 AM, Steven Donegan <<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a> <br clear="none">> > >>> <mailto:<a shape="rect" ymailto="mailto:donegan@donegan.org" href="mailto:donegan@donegan.org">donegan@donegan.org</a>>> wrote:<br clear="none">> > >>><br clear="none">> > >>>> Does anyone have a circuit that will take audio from a radio and <br clear="none">> > >>>> generate a pseudo COR signal for the URI-x? If so would you share <br clear="none">> > >>>> the circuit diagram?<br clear="none">> > >>>><br clear="none">> > >>>> TIA<br clear="none">> > >>>> Steven Donegan<br clear="none">> > >>>> KK6IVC General Class FCC License<br clear="none">> > >>>> Silver State Car #86<br clear="none">> > >>>> www.sscc.us <<a shape="rect" href="http://www.sscc.us/" target="_blank">http://www.sscc.us/</a>><br clear="none">> > >>>> _______________________________________________<br clear="none">> > >>>> App_rpt-users mailing list<br clear="none">> > >>>> <a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a> <mailto:<a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a>><br clear="none">> > >>>> <a shape="rect" 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 clear="none">> > >>>><br clear="none">> > >>>> To unsubscribe from this list please visit <br clear="none">> > >>>> <a shape="rect" 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 <br clear="none">> > >>>> scroll down to the bottom of the page. Enter your email address and <br clear="none">> > >>>> press the "Unsubscribe or edit options button"<br clear="none">> > >>>> You do not need a password to unsubscribe, you can do it via email <br clear="none">> > >>>> confirmation. If you have trouble unsubscribing, please send a <br clear="none">> > >>>> message to the list detailing the problem.<div class="qtdSeparateBR"><br><br></div><div class="yqt2851015933" id="yqtfd08189"><br clear="none">> > >>><br clear="none">> > >>><br clear="none">> > >>><br clear="none">> > >>><br clear="none">> > >>> _______________________________________________<br clear="none">> > >>> App_rpt-users mailing list<br clear="none">> > >>> <a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a> <mailto:<a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a>><br clear="none">> > >>> <a shape="rect" 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 clear="none">> > >>><br clear="none">> > >>> To unsubscribe from this list please visithttp://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"<br clear="none">> > >>> 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.<br clear="none">> > >><br clear="none">> > >><br clear="none">> > >><br clear="none">> > ><br clear="none">> > ><br clear="none">> > ><br clear="none">> > <br clear="none">> > <br clear="none">> <br clear="none">> _______________________________________________<br clear="none">> App_rpt-users mailing list<br clear="none">> <a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a><br clear="none">> <a shape="rect" 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 clear="none">> <br clear="none">> To unsubscribe from this list please visit <a shape="rect" 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 clear="none">> 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. <br clear="none">> <br clear="none"><br clear="none">_______________________________________________<br clear="none">App_rpt-users mailing list<br clear="none"><a shape="rect" ymailto="mailto:App_rpt-users@ohnosec.org" href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a><br clear="none"><a shape="rect" 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 clear="none"><br clear="none">To unsubscribe from this list please visit <a shape="rect" 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 clear="none">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. <br clear="none"></div><br><br></div> </div> </div> </div></body></html>