Thanks Victor Will check all that today when I get back home Ron W5SUM Sent from my iPhone
> On Feb 4, 2022, at 2:16 AM, Victor Rosenthal 4X6GP <[email protected]> > wrote: > > The guy who said to measure the voltage at the K3 gave you good advice. An > easy way to do this is to tap the DISP button and turn the VFO B knob until > it shows the voltage. Then see how much it drops during transmit. Since the > K3 tries to produce the requested power with whatever voltage it gets, low > voltage can cause excessive current draw. You should have at least 12v, > preferably more than 13v when transmitting a steady carrier. If it drops more > than half a volt when you transmit, there may be too much resistance > somewhere in the connection to the power supply. > > The other thing is that some combinations of resistance and reactance seen by > the final amplifier produce higher current draw than others. Maybe you are > seeing a combination of these effects. > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ >> On 03-Feb-2022 23:11, Ronnie Hull wrote: >> I have had my K3 back to Elecraft repair TWICE in less than a year >> Got it back finally yesterday and put it on the air this afternoon >> Running 80w on CW on 20M and getting a high current alarm. >> What the heck? Does it have to go back AGAIN? >> Man I was close to pulling the trigger on a K4 but all thoughts out the >> window now >> Anyone know what this might be? Using a 50Amp power supply >> Ron W5SUM >> Sent from my iPhone >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
