The mod is NOT needed if you have a Rev B KIO3 board in your K3. It's easy to see the rev letter on your board by simply opening the top cover. Details about how to do that are available in the mod document here:
http://www.elecraft.com/K3/mods/AF_Output_Mod_Rev_C.pdf Ron AC7AC -----Original Message----- Ken, Thank you for your warning but I am now wondering if it applies to later SN K3s. Mine is number 2574 and sure enough I have been using a mono-plug but in the Config Menu under SPKRS 1 has been selected. The manual indicates a preference for stereo plugs but clearly states, "If you only have a mono plug, set CONFIG:SPKRS to 1 to disable right-channel audio." A comment from Elecrafter might be in order to fully clear this matter up. In the meantime my external speaker is out until a stereo plug is wired. Thank you for the warning. 73 Doug ______________________________________________________________ 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