<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1524415181240_280452">A 5 to 26 GHz Vivaldi only weights 4.7 grams.</div><div id="yui_3_16_0_ym19_1_1524415181240_280467"><br></div><div id="yui_3_16_0_ym19_1_1524415181240_280488">A 2-26 GHz Planar disk comes it at 1.9 grams</div><div id="yui_3_16_0_ym19_1_1524415181240_280487"><br></div><div id="yui_3_16_0_ym19_1_1524415181240_280486">Minus coax of course. Kent<br></div><div id="yui_3_16_0_ym19_1_1524415181240_280449"><br></div><div id="yui_3_16_0_ym19_1_1524415181240_280461"><br></div><div id="yui_3_16_0_ym19_1_1524415181240_280454"><span></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1524415181240_280453"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1524415181240_280405" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1524415181240_280404"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1524415181240_280403"> <div dir="ltr" id="yui_3_16_0_ym19_1_1524415181240_280402"> <font id="yui_3_16_0_ym19_1_1524415181240_280446" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Phil Karn <karn@ka9q.net><br> <b><span style="font-weight: bold;">To:</span></b> Michelle Thompson <mountain.michelle@gmail.com>; KENT BRITAIN <wa5vjb@flash.net> <br><b><span style="font-weight: bold;">Cc:</span></b> Zach Leffke <zleffke@vt.edu>; "ground-station@lists.openresearch.institute" <ground-station@lists.openresearch.institute><br> <b id="yui_3_16_0_ym19_1_1524415181240_280513"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1524415181240_280512">Sent:</span></b> Monday, April 23, 2018 12:46 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Ground-station] Balloon Launch - experiments?<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1524415181240_280447"><br><div dir="ltr" id="yui_3_16_0_ym19_1_1524415181240_280448">On 4/23/18 10:17, Michelle Thompson wrote:<br clear="none">> Five and Dime is where we're at. <br clear="none">> <br clear="none">> 5GHz up and 10GHz down. We have aspirations to move up, but our bread<br clear="none">> and butter is 5 and 10.<br clear="none"><br clear="none">Then a surplus Omnitracs taco-shell antenna should do the trick for 10<br clear="none">GHz transmit (they're designed for Ku-band). We could avoid the need for<br clear="none">a directional receive antenna at 5 GHz by simply turning up the wick on<br clear="none">the ground (and using a directional antenna).<br clear="none"><br clear="none">The antenna itself is metallized molded plastic. We'd have to extract<br clear="none">the motor and drive from a fairly heavy cast metal chassis. I haven't<br clear="none">looked at one of these things in a long time but I'm sure Kerry Banke<br clear="none">has a good stock of them.<div class="yqt8497943703" id="yqtfd47999"><br clear="none"><br clear="none">Phil<br clear="none"></div></div><br><br></div> </div> </div> </div></div></body></html>