I am building some LP filters using 7-pole CoilCraft filters that I am installing in custom-made copper enclosures with BNC-male/BNC-female connectors. After I make and test a couple, I might consider making some for sale if there is interest. No idea on price, yet.
I bought an aluminum enclosure that will be used with the XG3 and uses a BNC-FF fedthru adaptor to shield the XG3 for use with attenuators for making receiver tests below -140 dBm. It will run on battery to eliminate any sneak paths for RF leakage. For QRSS modes one could use a transistor switch to key the output. That is how I keyed the output of a DDS synthesizer on 500-KHz for driving my 100w 600m xmtr. Of course the K3 does all modes on 500-KHz at 0 dBm and that is what I currently use as driver. 73, Ed - KL7UW ------------------------------ Message: 33 Date: Wed, 27 Apr 2011 15:57:20 -0700 From: "Eric Swartz - WA6HHQ, Elecraft" <e...@elecraft.com> Subject: Re: [Elecraft] New XG3 f/w includes CW beacon mode To: Bruce Beford <bruce.bef...@myfairpoint.net> Cc: elecraft@mailman.qth.net Message-ID: <4db89f50.3050...@elecraft.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed At 1 mW or less on its operating frequency, this is unlikely to cause any problems. The 2nd harmonic and higher order even harmonics are over 30 dB down from that, and the odd harmonics are 7-10 dB down. It certainly shouldn't cause any issues at VHF. That said, you can always add a simple in-line LPF to roll off the harmonics the additional amount desired. 73, Eric 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kW?, 144-1.4kw, 432-100w, 1296-testing*, 3400-? DUBUS Magazine USA Rep dubus...@hotmail.com ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
