[Elecraft] Hi Cur error on alignment part III, even at QRPp. 40m only. Rx is good.
Hi folks. I'm finishing a new K2 for a friend. When I tried to perform the 40m Tx alignment, I instantly get HI Cur and the power drops to zero. This happens if the output power is set to anything above 0.3 watts. This only happens on 40 meters. I was able to peak the output on all the other bands normally. The Cal Cur is set to 2.5. I've got the little RF probe built. could someone point me in the right direction as to where to look for the problem? Thank you verry much! 73, AD5VM Larry Hagood KLA-Tencor Customer Service Engineer Intel Service Business Unit Mobile: 505-563-0338 KLA-TENCOR CONFIDENTIAL This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, do not use or review the message or any information transmitted with it, and notify the sender. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
Re: [Elecraft] Hi Cur error on alignment part III, even at QRPp. 40m only. Rx is good.
Larry, If it only happens on 40 meters you have some problem with the 40 meter Low Pass Filter. Look at the schematic for RF Board sheet 3 toward the lower right and you will see the components associated with the 40/60 meter LPF - check them all for proper values, correct turns on toroids, good soldering, etc. Include relay K12 as well. 73, Don W3FPR Hagood, Larry wrote: Hi folks. I'm finishing a new K2 for a friend. When I tried to perform the 40m Tx alignment, I instantly get HI Cur and the power drops to zero. This happens if the output power is set to anything above 0.3 watts. This only happens on 40 meters. I was able to peak the output on all the other bands normally. The Cal Cur is set to 2.5. I've got the little RF probe built. could someone point me in the right direction as to where to look for the problem? Thank you verry much! 73, AD5VM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
RE: [Elecraft] Hi Cur error on alignment part III, even at QRPp. 40m only. Rx is good.
Thanks Don! I checked every component in the 40/60m LPF, all caps are the correct value, both inductors have correct windings, hit all solder points again. Still have the same problem. Also, On 40 meters, even with power output set to 1.0 watt. The current display shoots straight up to 2.5 (max) On all other bands with power set to 1.0 watt, the current only goes to about .95 Also, With the power output at 1.0 watt, I compared the RF out at the antenna jack. It's roughly the same for 40 and 30 meters, and I have no problem with 30 meters. Larry Hagood From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Wed 4/23/2008 7:40 AM To: Hagood, Larry Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Hi Cur error on alignment part III, even at QRPp. 40m only. Rx is good. Larry, If it only happens on 40 meters you have some problem with the 40 meter Low Pass Filter. Look at the schematic for RF Board sheet 3 toward the lower right and you will see the components associated with the 40/60 meter LPF - check them all for proper values, correct turns on toroids, good soldering, etc. Include relay K12 as well. 73, Don W3FPR Hagood, Larry wrote: Hi folks. I'm finishing a new K2 for a friend. When I tried to perform the 40m Tx alignment, I instantly get HI Cur and the power drops to zero. This happens if the output power is set to anything above 0.3 watts. This only happens on 40 meters. I was able to peak the output on all the other bands normally. The Cal Cur is set to 2.5. I've got the little RF probe built. could someone point me in the right direction as to where to look for the problem? Thank you verry much! 73, AD5VM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
