Neil, Download and review the K2 A to B instructions, and you will see some explanation for many of the official upgrades. I would suggest you add the 2nd Xtal Flattening Mod since you have the KSB2 installed - it will flatten the OP1 filter passband. If you are content with the thermal stability of your K2, that is fine, but if you wish to improve it, I would suggest adding the BFO mod and th thermistor mod. If you run an amplifier, I would strongly recommend the K2 Keying Waveshape Mod which eliminates keyclicks (but also requires new firmware).
I doubt that you will have any real problems with your older K2, but the A to B mods do add some improvement to the K2 stability. BTW - the rework eliminators are no longer available (unless you can find an uninstalled kit), but the IMA is still being shipped as far as I know. 73, Don W3FPR Neil Shubert wrote: > Hi All. > I have a K2- ser# 2676 > > I will look to upgrade to the re-work eliminator, unpcbs internal mic > adaptor and other kits as well > > I know there were design changes made to the radio after my manufacturing > run. What improvements came out of these changes and Does anyone know if I > will have any problems or what problems I need to expect from a pre- > upgraded radio. > > Neil Shubert > AC2O > K2-2676 > KSB2 KDSP2 KNB2 KAT2 K160RX > > ______________________________________________________________ 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
