wayne burdick wrote > > > Steve, > > Another KXPD3 user recently pointed out something I hadn't considered. > Some other keyer manufacturers who use cup-point set screws as > contacts flatten (or round off) the screw ends using a fine file. This > broadens the contact area, which can otherwise be very sharp with a > cut point. I'm looking into whether we should be doing this in > production. > > Please let me know if you try this on your KXPD3. > > 73, > Wayne > N6KR >
Wayne, I took your suggestion. I put a bit of a tweak to it, however. I noticed the set screws have a divot in them on the end that makes the contact. I took this back to flat across the whole set screw on a bench grinder (fine stone). Then I "rounded" them a bit on the same grinder/stone. After that I took my knife sharpening stones to the screws. I started at 120 grit and worked all the way through 6000 grit polish tape. The screws have a rounded near-mirror finish now. I don't have much key time with it just yet, but in the little I have used it just now it does quite noticeably improve the action. I spent a little more time tweaking the contact pressure/gap too. I had to play with it a little but I think its just about right. I will post back after a while and fill you in as to my experiences. Steve, KC8QVO -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-CW-glitch-with-KXPD3-keyer-tp7559618p7559711.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
