Hello again George: I just measured the resistance from the 1-2 side of T5 to the 3-4 side and got about 340 ohms. I'm not sure what that means, though, other than giving you a point or reference<g>.
You should be able to tell if you have wound T5 correctly without removing it. Just look at the picture in the manual to check for winding directions and then count the turns and check that the correct color wire is going into the correct numbered hole. Before you do that, though, check that the two different kinds of varactors (MV209 and 1SV149) are installed in the correct locations. When you are confident of that, then I would look for a problem with the PLL temp compensation board. And not trying to put you off... REALLY... But that about runs the limit of my ability to help other than to repeat the mantra of check soldering, check soldering, check soldering and then once again check soldering. Hope I haven't muddied the waters for you George. I'm not an EE or technician.... Just been messing with the K2s for a couple of years<g>. Good Luck!! 73, Ken K3IU ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of George Cortez Sent: Saturday, March 26, 2005 5:02 PM To: elecraft list Subject: RE: [Elecraft] K2 #4830 IS ALIVE Hi I checked all you said and the voltage still wont move I ohmed the t5 out and its about 350ohm across from 1-2 to 3-4 all else looks good. 80&40 are the same voltage 20/17 are under 4.5v 15 is the same as 80/40 abt 7.95v 12/10 under 5.5v I think t5 will have to be rewound? What do you think? George .................................................................... Hi George: To get a 12 uH L31, get in touch with Gary, or Parts, or Support at Elecraft. I'm sure they will ship you one out right away. Here is quote from an email I got from Gary about this issue: "We are in the process of switching over to the 12uH choke until the current lot of PLL crystals is used up. Most of them so far have shown slightly lower than needed range with the 10uH choke." The most probable cause of being unable to adjust the VCO voltage with L30, assuming correct installation of T5, L30, C72, and the PLL temp comp board, is having the 1-2 (red wire) windings on T5 too bunched up. Check that they are spread out around the 'roid like shown in the picture. You don't need to uninstall T5 to do this... Just use the green tuning stick that comes with the K2 to slide the windings on the 'roid. If there is no voltage change at all when you adjust L30 (also change bands to see if the voltage is different on another band), then you need to check for a short, solder bridge on or in the vicinity of the l'il PLL temp compensation board that you put together. It is very easy to create a l'il solder bridge or short on that l'il guy. Good Luck!!! 73, Ken K3IU _______________________________________________ Elecraft mailing list Post to: [email protected] 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: [email protected] 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
