All, Thanks for the input. Glad the K3 seems to be operating up to snuff. I now consider this issue closed.
73 and have a great weekend. --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik....@gmail.com K3 #281, P3 #688 HRD v5.x/6.0 Test Team On Thu, Jan 10, 2013 at 11:27 PM, Don Wilhelm <w3...@embarqmail.com> wrote: > Ian, > > So your K3 is operating a bit more efficiently than average - what is to > be worried about, be glad. > > 73, > Don W3FPR > > > On 1/10/2013 10:23 PM, Ian Kahn - Ham wrote: > >> So, several weeks after originally starting this thread, I finally had >> time this evening to sit down and take some voltage and current >> measurements. I used my Astron SS-30 power supply connected to the 40A >> DC-in port on my Rigrunner. I then ran the Elecraft power cord from a 25A >> port on the Rigrunner into the 12V DC-in on the back of the K3. Everything >> measures 13.8V in standy/rx, all the way to the reading on the K3 display, >> with the K3 showing .82A current draw in rxv. I would measure the power at >> the 12V in port on the K3, but can't see a way to get the probes into the >> powerpole connectors without damaging anything. I ran my tests using FSK-D >> at 100W and into a known-good 300W dummy load, so I could get 100% duty >> cycle for a few seconds with each transmit. When I go to transmit, voltage >> on every band looks good, with the voltage dropping from 13.8V to anywhere >> from 12.1 to 12.4 volts. I'm concerned about some of the current readings, >> however. 80 meters shows a current draw of 15.80A; 17 meters shows a draw >> of 16.35A; 15 meters shows a draw of 16.40A; 10 meters shows a draw of >> 12.93A. 12m, 20m, 30m, 40m, and 160m are all within the 17-22A current >> draw rating for the K3. The RF output meter on the K3 shows 100w out on >> every band, but I haven't put the rig on an external watt meter. Since >> these are all below the nominal current draw given in the K3 owner's manual >> (17-22A), is there something I should look at recalibrating? Or could >> something more serious be going here that I need to be concerned about? >> Or, am I worried about nothing? Further guidance is greatly appreciated. >> >> > -- ______________________________________________________________ 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
