Mike, Yes, a bad Q24 could possibly cause that problem. Q24 has the VALC signal applied to it, and that signal is the result of the K2 firmware attempting to control the power output. The action of Q24 is to control the amount of BFO signal that is injected into the transmit chain.
Try it again with the new Q24 and let us know if you still have a problem - there could be an error in the RF Detector or the path for the VRFDET signal. 73, Don W3FPR > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Mike Knapp > Sent: Sunday, July 09, 2006 7:50 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K2 high current on xmit > > > Hi all. I am building K2 #5644 and got to alignment part 3. However, > whenever I keyed the transmitter at 2W on any band, the power would > shoot up to 19-20 W and a high current message would come up. > > In addition, I noticed that when I keep the power at 0.1 W, the > transmitter would work fine (clean CW output when I listened on my other > rig). This allowed me to check transmit voltages on the PA as well as > other transmit circuitry. This led me to find that Q24 was bad. I'm just > curious if Q24 failing would cause this kind of behavior. > > Thanks, > -Mike N8YO > K2 #5644 > _______________________________________________ > 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: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006 > > _______________________________________________ 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
