Yes, but it was also phased in at Aptos on Rev A boards at some point so, while all Rev A and earlier boards need the mod, the more current K3's with Rev A boards probably have had the mod made at the factory already.
There's a way to check by just opening the K3's top cover shown in the document. Ron AC7AC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Cunnings Sent: Saturday, February 14, 2009 5:09 PM To: [email protected] Subject: Re: [Elecraft] K3 Caution when using an external monaural speaker According to the Enhancements and App Notes page at: http://www.elecraft.com/K3/k3_app_notes.htm "This modification is needed for all K3s shipped approximately before 01/12/09 containing either a Revision "XB" or Revision "A" KIO3 board." Bob NW8L ______________________________________________________________ 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

