Guy Olinger K2AV wrote: > Here's a gut guess... > > Something in the Titan has gone sour. You read 300 watts on the > Diamond because the line SWR is so high. Whatever is causing the high > SWR from the antenna is causing all kinds of problems with RF in the > shack. There is something the matter with the Diamond read on > reflected power, so it's telling you everything is fine out the line, > except it isn't. > > I have a Titan I now use as an alternate listen antenna, and if it > gets water inside, or that 80 meter cap at the top goes bad, the whole > thing behaves poorly. It's very touchy. > > The K3 is the last place I'd look until the above ruled out. > > 73, Guy. > > On Mon, Mar 22, 2010 at 8:50 PM, Dick Roth, KA1OZ<raro...@comcast.net> wrote: >> Greetings fellow Elecrafters-- >> >> I was chasing RF in the shack, which had been causing cqrlog to lock up. >> I was using the loudness of the hum coming out of my PC's outboard >> stereo speakers to gauge how much raw RF there might be. >> >> Well at one point the shack got very quiet and I thought that I might >> have blown out the speakers. No...not the case. Here are the bottom >> line symptoms: >> >> Any change of band and the swr goes sky high upon keying. I hit the >> "ATU Tune" and the ATU quickly reduces the swr from ohmigawd to less >> than 2:1. The output power, which had taken a dive when the swr was >> high, comes back to a dialed 100W. However, the Diamond SX-100 watt/swr >> meter I keep in the line indicates that I'm transmitting almost 300W! >> Naw...can't be. >> >> Next major symptom: sensitivity is gone. Even the Boston big gun 50000 >> Watt WBZ, up the road, is in the noise. I use MW to chase baseball games. >> >> I have removed the wattmeter and my B&W LP filter as well as the surge >> suppressor from the line so that nothing stands in the way of my path to >> my Titan-DX vertical and the symptoms remain the same. >> >> The symptoms barely change if I bypass the ATU. I have a sneaking >> suspicion that I've blown the ATU and opened one side of the signal >> path. That would explain the loss of sensitivity and possibly the >> ridiculously high output power as indicated by the external wattmeter. >> The on-board meters shows a proper 100W out. >> >> I figured I'd throw this out there to the Elecraft Knowledge Base before >> tearing the rig apart. >> >> K3>>>Diamond SX-100 wattmeter>>>B&W Low Pass Filter>>>surge >> suppressor>>>antenna feed to the world. >> >> -- >> 73, >> Dick ka1oz >> Middleborough, MA >> >> Radio: Elecraft K3/100(Kit) SN 859 >> Antenna: Titan-DX >> ______________________________________________________________ >> 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 >> > Thanks for the suggestions. I've forwarded my original email to k3support.
-- 73, Dick ka1oz Middleborough, MA Radio: Elecraft K3/100(Kit) SN 859 Antenna: Titan-DX ______________________________________________________________ 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
