Building the KXB3080 is like that old game where the teacher gives everyone a piece of paper where the first instruction was "Read all instructions before doing anything". There'd be all kinds of instructions like "stand up and sing the national anthem" and "yell out the name of the person next to you". Then the last instruction was "Don't do any of the instructions above. Write your name on the top of the paper and hand it back to the instructor." The whole thing was an exercise in following instructions.
With its mislabelled pads, cut traces, wires that cross each other, torroids that are mirror images of each other but with exact yet different strip-lengths, the KXB3080 is probably the most challenging Elecraft kit to get right. Not to mention the gymnastics required to install it without shorting that one wire that has to cross behind the board without shorting to the pad right next to it. And making it fit under the ATU. I love it. :-) Craig NZ0R -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm Sent: Wednesday, August 16, 2006 4:00 PM To: Soaring Eagles; elecraft@mailman.qth.net Subject: RE: [Elecraft] KXB3080 problem Jim, One thing that will cause that problem is if the 'D' and '5' wires are interchanged - they should cross over each other (guess how I discovered that <G>) Did you make the PC trace cut on the KX1 board? Is T2 wound correctly and installed properly? - it should look like the photos. Were the toroid leads properly stripped? The unstripped lead length is rather critical in the KXB3080, but the proper lengths are indicated in the manual. Did you place the 'A' and 'B' wires as indicated in the manual? - they are mixed on the KXB3080 board, so the wire marked A on the KXB3080 goes to the B position on the KX1 board, etc. Have you checked transmmit yet? If you get proper RF output, you can be reasonably certain that the Low Pass Filter is OK, but if you find no or low power on transmit, look at the Low Pass Filter for the problem. The LPF (and the DDS) are the only components shared by both the receiver and the transmitter. 73, Don W3FPR > -----Original Message----- > > I build KX1 sn/1519 and it worked great! I finished building up > the KXB3080 > and installed it last night. All the tests were fine as I went > along in the > build. However, when I try to peak the receiver, I'm not getting any > signals. I don't have an XG1 or 2, although I might need one! > <grin> Also, > it doesn't make any difference where I set the RF Gain control, and I'm > thinking that's significant. I've looked for the obvious shorts and > incorrectly installed parts but can't find any. > _______________________________________________ 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 _______________________________________________ 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
