John, First, check to be certain that you increased the CAL CUR setting to 3.5 Amps - the KPA100 adds to the current drain of the base K2 and the limit must be increased from the default of 2.5 Amps.
Having said that, let's get down to some other 'facts' - first, the Hi-Cur is only an indication that the base K2 is drawing more current than the CAL CUR setting - there is usually no harm in setting the CAL CUR limit to something above 3.5 Amps for troubleshooting purposes - if only to see just how much current is actually being drawn by the base K2 - read the current on the K2 display so you know how much current is actually being reported to the K2 microprocessor. Next, it would be of interest to know how much current the base K2 draws when transmitting at full power into a 50 ohm resistive dummy load (KPA100 completely disconnected). I will say that the most common cause of HI-CUR warnings is a problem in the base K2 Low Pass Filter - check the toroids for the correct number of turns and the capacitors for proper values. 73, Don W3FPR > -----Original Message----- > > I have enjoyed reading the problems of others but now its 'the > winter of my > discontent' as they say. > I've successfully built the K2, KSB, 160 converter, DSP and > finished the ATU > (needs testing and not connected). I am now finishing the K100 > I have got to the end of the test where one fires up with 20W and > I've got > HI CUR. I have gone through the tests 3 times now and cannot see any > irregularities. I have looked at R21-22 and T1 and turned > R26/R27 slightly clockwise > as advise but still have the problem. > I am feeding into 239 socket and 213 cable through a Kenwood ATU > and then > into Bird 500W load. All tests are perfect of the K2. > I noted on my power supply source that when set to 20W the PSU is > delivering > about 3 amps. The Kenwood Power Meter is not reading anything > much and the > K2 LCD shows 1.0-1. > Although in the production of electronics during my life, I left > 'amateur > radio' some 15 years ago when I went deaf. I am now try to pick > up the threads > and I cannot remember how those funning things with three legs work !!. > I would really appreciate some help here guys. > Regards John G4BOU > > > _______________________________________________ > 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 > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.371 / Virus Database: 267.13.12/194 - Release Date: 12/7/2005 > > _______________________________________________ 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
