I'm building a KAT2, which I haven't done for a while. I noticed two things:
1) The capacitor supplied for C60, 1000 pf, is way too fat to fit between J4 and the microprocessor socket. Either a smaller capacitor should be supplied (I used one from my junkbox) or it should be mounted on the bottom of the board. 2) The manual says to put the lockwasher between the board and the standoff when assembling the control board. But when attaching the LC board it says "Secure the L–C board to the Control board standoffs using two 4-40 screws and two #4 split lock washers. These lock washers go between the standoffs and the PC board, *not* between the PC board and screws as on the control board." Well, which is it? -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
Vic,
It seems the .001 uf capacitors have gotten fatter over the years and now they will not fit between the header and the offending socket. Replace C45 and C60 with disc capacitors if you have them or use most any smaller bodied .001 uf capacitors at those locations. For the lockwashers - put one lockwasher between the standoff and one of the boards, it matters not which board for the lockwasher is only a device to make the standoff just a bit longer. I prefer to put the lockwasher on the inside of the L/C board because most of the time I remove the screws from the control board only and it is difficult putting lockwashers in place if they are between the board and the standoff there. 73, Don W3FPR Vic K2VCO wrote: > I'm building a KAT2, which I haven't done for a while. I noticed two > things: > > 1) The capacitor supplied for C60, 1000 pf, is way too fat to fit > between J4 and the microprocessor socket. Either a smaller capacitor > should be supplied (I used one from my junkbox) or it should be mounted > on the bottom of the board. > > 2) The manual says to put the lockwasher between the board and the > standoff when assembling the control board. But when attaching the LC > board it says > > "Secure the L–C board to the Control board standoffs using two 4-40 > screws and two #4 split lock washers. These lock washers go between the > standoffs and the PC board, *not* between the PC board and screws as on > the control board." > > Well, which is it? Elecraft mailing list Post to: [hidden email] 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 |
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