Don and all, Forgive me, I am guilty of thinking out aloud on the Reflector! My chokes went in with care, and had snug windings. I did rewind one after visual inspection and before installation, because I was a little suspicious of the wire's enamel in one area and did not want to be faced with "the shorted turn" problem should the enamel come adrift later on.
Adage - 'Give it your best and it will reward in kind' 73, Geoff GM4ESD ----- Original Message ----- From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> To: "Geoffrey Mackenzie-Kennedy" <[EMAIL PROTECTED]>; "PA3GYU" <[EMAIL PROTECTED]> Cc: "Elecraft Discussion List" <[email protected]> Sent: Tuesday, March 01, 2005 1:12 PM Subject: RE: [Elecraft] Re: K2/SSB Construction > Geoff and all, > > The real problem is that the insulation on the wire can be scraped during > the process of winding RFC1 and 2 (not during the process of mounting them > between the smooth surface of the R-Pak and the crystal body) - so just > being careful and re-wind if the wire is scraped is the better answer IMHO. > A bit of Teflon tape just dangled between the crystal can and the choke may > provide that bit of 'slipperyness' needed to insert the choke, but I would > hesitate to rely on the thin Teflon tape for its insulation properties in > this application. > > Reminds me of one of my favorite adages - 'If you don't do it right the > first time, you get to do it over and over again until you get it right'! > While that may be great fun for some activities, it gets old for most - so > the best answer is to do the best one can to get it right the first time. > With the K2, you are building a quality piece of gear - don't compromise it > by taking shortcuts. > > Actually, I have not found any case where the space is too tight - but I may > be winding the toroids a bit more snug than some - I just smooth the wire > with my thumb on each turn and check to see if any turns have been crossed > over another. Both things are important in winding a choke that fits > properly. > > 73, > Don W3FPR > > > -----Original Message----- > > > > In my humble opinion you are 100% correct. RFC1 and 2 are a very tight fit > > when all other components are mounted properly. I believe that > > they used to > > be on the bottom of the PCB, but were moved to the top for very good > > reasons. I wonder whether some Plumbers' Teflon Tape (the thin > > white stuff) > > put around crystals X3 and X5 during installation would help > > prevent shorts > > between choke and crystal can. > > > > 73, > > Geoff GM4ESD > > _______________________________________________ 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
