Gary, Elecraft does not recommend any fixatives on toroids in any of its kits, and I also strongly discourage its use. Many fixatives will alter the inductance, and change other characteristics. Additionally, toroids mounted with fixatives make repairs more difficult (if a toroid must be removed) and will likely void the warranty.
The toroids are sturdy enough to stand normal abuse in portable/mobile situations as well as during transport and shipping. As testimony to that fact, consider that one K2 I built traveled several million miles over the US in the cab of an 18 wheeler. No fixatives were used and no toroid failures ever occurred - and I worked on that same K2 (for another problem) only about 3 weeks ago. 73, Don W3FPR On 9/26/2010 12:45 PM, Gary wrote: > Elecraft must be having a good sales month if Roger bought his K3 (s/n 46xx) > earlier this month and I just bought mine at last weekend's ARRL > Southwestern Div Convention (s/n 47xx) and the month even isn't over yet. > Congratulations Eric& staff. I am just starting my assembly and will look > for this audio board issue. I'd also like to see everything well supported > inside because I plan to transport my K3 from time to time and don't want > any intermittent problems. The first I found was the toroids in my KAT3 came > bent over, especially L8. When I carefully straightened all of them I > noticed L8 had to be lifted more than 1/8" above the others to snug up the > last wraps of wire on it. Dale Farmer indicated that this is nothing to be > concerned about however I'd be more comfortable if the toroids were > supported more. Maybe a dab of silicone sealant below each? Any suggestions? > Gary > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
