<div dir="auto">Thats very cool!<div dir="auto"><br></div><div dir="auto">I love how RF design at microwave frequencies becomes so mechanically interesting!</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 28, 2023, 10:45 AM Paul Cianciolo <<a href="mailto:paulc@snet.net">paulc@snet.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div class="m_12393835779452923WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">John was the closest.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The piece is a attenuator, a precision 10 GHZ attenuator 6 dB.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The “dumbbell” was housed in a aluminum cylinder that kept a constant impedance thru the pad.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The blue discs are 155 ohm resistors from the center brass ring to the out edge and the cylinder in the middle is a 39 ohm resistor.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Those values in a PI configuration  = a 6 db attenuator…<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">See below<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><img width="827" height="806" id="m_12393835779452923Picture_x0020_1" src="cid:image001.png@01DA397A.E662A9F0"></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">PaulC<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">W1VLF<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Check out my  <a href="https://www.youtube.com/user/W1VLF/videos" target="_blank" rel="noreferrer"><span style="color:blue">Youtube Channel W1VLF </span></a></span><u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue"><u></u><u></u></span></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></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""> 450 [mailto:<a href="mailto:450-bounces@lists.vhfwiki.com" target="_blank" rel="noreferrer">450-bounces@lists.vhfwiki.com</a>] <b>On Behalf Of </b>Daniel May<br><b>Sent:</b> Wednesday, December 27, 2023 3:25 PM<br><b>To:</b> 450 List<br><b>Subject:</b> Re: [450] Guess the component<u></u><u></u></span></p><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">Old style (antique radio) variable resistance volume control.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p><div><div><p class="MsoNormal">On Wed, Dec 27, 2023, 2:42 AM John Foege <<a href="mailto:john.foege@gmail.com" target="_blank" rel="noreferrer">john.foege@gmail.com</a>> wrote:<u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal">I also thought "dumbbell for a dwarf"...<u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">It looks like some thru-line section for an oil filled dummy load....<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">What is it?! Tell us!<u></u><u></u></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Sun, Dec 24, 2023, 5:50 PM Robert Busino <<a href="mailto:n1ujs@toast.net" target="_blank" rel="noreferrer">n1ujs@toast.net</a>> wrote:<u></u><u></u></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">Still awaiting your last response!<u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif""> <u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif""> <u></u><u></u></span></p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif""> <u></u><u></u></span></p></div><div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:9.0pt;font-family:"Arial","sans-serif""><hr size="2" width="100%" align="center"></span></div><div><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"">: "Paul Cianciolo" <<a href="mailto:paulc@snet.net" target="_blank" rel="noreferrer">paulc@snet.net</a>><br><b>Sent</b>: Friday, December 22, 2023 2:36 PM<br><b>To</b>: <a href="mailto:450@lists.vhfwiki.com" target="_blank" rel="noreferrer">450@lists.vhfwiki.com</a><br><b>Subject</b>: [450] Guess the component</span><span style="font-size:9.0pt;font-family:"Arial","sans-serif""> <u></u><u></u></span></p><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial","sans-serif""> <u></u><u></u></span></p></div><div><p class="MsoNormal">Hazard a guess as to what this is?<u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">PaulC<u></u><u></u></p><p class="MsoNormal">W1VLF<u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Check out my  <a href="https://www.youtube.com/user/W1VLF/videos" target="_blank" rel="noreferrer">Youtube Channel W1VLF </a><u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p></div></div><p class="MsoNormal">_______________________________________________<br>450 mailing list<br><a href="mailto:450@lists.vhfwiki.com" target="_blank" rel="noreferrer">450@lists.vhfwiki.com</a><br><a href="http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450" target="_blank" rel="noreferrer">http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450</a><u></u><u></u></p></blockquote></div><p class="MsoNormal">_______________________________________________<br>450 mailing list<br><a href="mailto:450@lists.vhfwiki.com" target="_blank" rel="noreferrer">450@lists.vhfwiki.com</a><br><a href="http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450" target="_blank" rel="noreferrer">http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450</a><u></u><u></u></p></blockquote></div></div></div></div></div>_______________________________________________<br>
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