You might want to make sure your power supply isn't doing its foldback or current limiting thing..... If it is, symptoms you've described should repeat 100% of the time.
matt, W6NIA k3 # 24 On Sun, 30 Mar 2008 14:19:11 -0600, you wrote: >Hello, > >I just noticed something else on this problem. The whole radio resets, like >turning it off then on again. The word Elecraft pops up on the LCD and the >DSP red light blinks on, just like I turned it off then on again. > >Any suggestions? > >Best, >DW Holtman >WB7SSN > >----- Original Message ----- >From: "DW Holtman" <[EMAIL PROTECTED]> >To: <[email protected]> >Sent: Sunday, March 30, 2008 2:09 PM >Subject: [Elecraft] K2 100 Watt Pa Problem > > >> Hello, >> >> I was wondering if anyone else has had a problem like ythis one? >> >> I'm was in the process of finishing up my KPA 100. All of the power >> supply, bias adjustments etc went as per the book. When I got to page 50 >> in the manual to test the transmitter at high power the problem shows up. >> >> With the Power out turned to around 11 watts, the relay clicks and the >> power out is taken over by the KPA 100. Every thing works great until I >> get to right at 20 watts. Any power level 20 watts or over, when it is >> keyed, a relay klicks, power out shuts off and nothing out. At 18 watts >> the power out from the KPA 100 is fine. There are no error messages that I >> can find, even on the secondary message menus. >> >> Any suggestions why the PA works up to 20 watts then shuts down with no >> error message? >> >> Best, >> DW Holtman >> WB7SSN >> >> ----- Original Message ----- >> From: "Ron D'Eau Claire" <[EMAIL PROTECTED]> >> To: "'Nelson Wittstock'" <[EMAIL PROTECTED]>; >> <[email protected]> >> Sent: Sunday, March 30, 2008 2:00 PM >> Subject: RE: [Elecraft] Soldering station >> >> >> I just ordered the new KXV3 RXA board for my K3. The instructions state >> requirements for the soldering station to be used in the installation of >> the >> >> new board. My workshop has never had need for "high tech" soldering and >> consequently I do not own a soldering station. I have several assorted >> soldering irons and guns that have served me well in the past but I guess >> I >> will have to join the modern world. Since I would like to keep updating >> my >> K3 it looks like I will need to buy a soldering station. In looking >> through >> >> Googled references I see many stations in the $100 and up range. Is it >> absolutely necessary to spend that much to ensure the safety of my radio >> or >> are there some less expensive suitable alternatives? >> >> Nelson - K8DJC >> >> ------------------------------------------ >> >> That mod is one of the easiest in terms of soldering. You are soldering >> two >> fine wires to closely-spaced connector terminals that, if overheated, will >> melt the connector header or lift traces. But it's not nearly as critical >> as >> many component installations in other locations. Two more leads are >> connected to BNC connector terminals that require significant heat in any >> case. The RXA board comes with the leads pre-attached, so there's no >> soldering to do to the RXA board itself. >> >> It's a judgment call. Elecraft wants you to be successful and your chance >> of >> having trouble is greatly reduced by using the right tools, and a good >> soldering station is a tool you'll use again and again if you do any work >> on >> your rigs. >> >> You can get away with less. I've repaired a lot of SMD circuit boards >> sitting cross-legged on the deck in the navigating bridge of a ship using >> a >> portable butane-powered soldering iron while holding a flashlight in my >> teeth. >> >> I've also had lots and lots of practice over decades of soldering that >> lets >> me judge the temperature of the tip by the smell and, by being very, very >> careful, I've yet to destroy a board or parts. I did have the advantage of >> "growing up" with the pc board industry, first working on boards back in >> the >> 1960s that had large push-in pins to which leads were soldered, then >> boards >> with big thick, wide traces that have slowly evolved into the tissue-thin, >> tiny traces we find on many boards today. >> >> Even so, whenever possible I'll use a temperature-controlled soldering >> station in a comfortable, well-lit shop. >> >> Over time, I've found that a good soldering station costs me pennies a >> month >> to own and use. I don't consider that too much to spend to protect circuit >> boards, almost any one of which is worth more than the iron. >> >> I currently have a Hakko 936 that cost me less than $100 several years ago >> from www.tequipment.net. >> >> Bottom line, it's a matter of how skilled you are at soldering and how >> much >> risk you are comfortable taking with the pc board and components. >> >> Ron AC7AC >> >> >> _______________________________________________ >> Elecraft mailing list >> Post to: [email protected] >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com >> _______________________________________________ >> Elecraft mailing list >> Post to: [email protected] >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com > >_______________________________________________ >Elecraft mailing list >Post to: [email protected] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
