<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div id="yui_3_16_0_1_1450411312069_2956" dir="ltr"><span id="yui_3_16_0_1_1450411312069_2963">Well, is that 330 Ohms into the base of the 2N2222 and 4.7uF caps up and down? if so that seems like a lot of capacitance, and not much current limiting into the base. Certainly not 4.7pF that's not enough to do anything except limit GHz rf. Speaking of rf, a few ferrite beads might be a good idea, they make tiny ferrite SMD parts now and that would go a long way to preventing some issues seen with rf at high level emi sites. </span></div><div id="yui_3_16_0_1_1450411312069_3049" dir="ltr"><span id="yui_3_16_0_1_1450411312069_3048"> I presume JP1 and JP2 will be co-located so a jumper can bypass the inverter stage if necessary? </span></div><div id="yui_3_16_0_1_1450411312069_3051" dir="ltr"><span id="yui_3_16_0_1_1450411312069_3050">I will buy one when it available! W6MTF</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: times new roman, new york, times, serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font face="Arial" size="2"> On Thursday, December 17, 2015 1:20 PM, Steven Donegan <donegan@donegan.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv5344130583"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div id="yiv5344130583yui_3_16_0_1_1450195811974_190729">Attached is a circuit design that covers breaking out the URI-X pins, supporting the EEPROM, a COS generator for radios which do not have one OR you don't want to hack the radio.</div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190726"><br></div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190730" dir="ltr">What else might be useful on this board design? When it is 'done' I will have boards made and folks can buy them if desired.<br></div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190604"><span></span></div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190612"><div id="yiv5344130583yui_3_16_0_1_1450195811974_190753">And Merry Christmas/Happy New Years</div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190752"><br></div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190751">BTW - please critique/validate the design.</div><div id="yiv5344130583yui_3_16_0_1_1450195811974_190756"><br> </div></div><div class="yiv5344130583signature" id="yiv5344130583yui_3_16_0_1_1450195811974_190613">Steven Donegan<br>KK6IVC General Class FCC License<br>PP-ASEL<br>Silver State Car #86<br>www.sscc.us</div></div></div></div><br>_______________________________________________<br>App_rpt-users mailing list<br><a href="mailto:App_rpt-users@ohnosec.org" ymailto="mailto:App_rpt-users@ohnosec.org">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">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. <br><br></div> </div> </div> </div></div></body></html>