The TF3MA sidetone mod is still current as it is in fact a modification of the B level board, not just the A level board, as the site states that this is an improvement of exactly the 47k / 82 mH A to B improvement mentioned in the quote below. See http://www.raunvis.hi.is/~matti/TF3MA/sidetone_tf3ma.html
See also my mod list here: http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_28.html (search for sidetone), where I specify it as : "Even more sinusoidal tone than the mod in serial #3000+ gives" Don Wilhelm-4 wrote > Yes, those two mods are old, and apply only to the A level boards (below > SN 3000). > There have been improvements in the K2 sidetone incorporated into the B > level boards, and are also included with the A to B mod kit. > The changes added a 47k resistor in series with C24 (R11 for the B level > boards) and a shielded 82mH inductor across pins 7 and 10 of RP5. ----- Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/latest-K2-serial-tp7615395p7615491.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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
