That's right Eugene - just as it says in the manual but you have to disconnect the red wire of the power cable. The current flowing from the + side of the power supply goes through your DMM (set for a 10A current range) and on to the KPA100.
If you have connectors attaching the wires to your power supply, you can open the fuse holder in the power cord, remove the fuse, and connect your DMM between the contacts for the fuse. 73, Ron AC7AC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eugene Worth Sent: Thursday, December 01, 2011 6:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPQ100 bias adjustment I'm moving on to the final alignment of my KAT100-2/KPA100 in an EC2 enclosure . split from a stock K2 . So far, so good. Some of the testing and alignment steps are confusing since the construction assumes one wants to build the KPA100 in the K2 body. And, since I did not put a speaker into the EC2. That said, I'm confused about the best measuring points for the bias current adjustment step on page 50 of Appendix G, Rev H KPA100 construction manual dated Sept, 2011. I'm trying to envision exactly where to clip the probes of my DMM. I could clip the positive (red) lead to the red lead at the back of the power supply. Then the black (negative) lead to the red (+) J3 connector ???? That seems to be in parallel with the positive lead of the power cable . and the instructions clearly state in series . so, I am confused as to the best two locations to put the test leads. After getting to this point, I would hate to goof and let magic smoke out of the radio. Thanks in advance. gene WG7GW ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
