Works....Sounds like an old time telegraph sounder clicking away. Is there any means to disable it in the menu? Before, with AGC off, a static pulse would hit and just produce a distorted click but I could still copy cw. Now it completely blanks out everything. I'm not too sure I like this feature. Steve N4LQ n...@carolina.rr.com ----- Original Message ----- From: "James Sarte" <k2qi....@gmail.com> To: "Wayne Burdick" <n...@elecraft.com>; "Elecraft" <Elecraft@mailman.qth.net> Sent: Tuesday, December 08, 2009 2:36 PM Subject: Re: [Elecraft] K3 Beta Firmware Rev. 3.66: AF output protection
> That's a great feature; can't wait to try this out at home. I've been > deafened more than once by accidentally turning off the AGC! > > Thanks Wayne and crew. > James K2QI > > On Tue, Dec 8, 2009 at 2:09 PM, Wayne Burdick <n...@elecraft.com> wrote: > >> K3 beta-test firmware revision 3.66 (with DSP rev. 2.48) is now >> available. >> >> AF Output Protection: The DSP now senses when AF output would be so >> strong as to drive the speaker or headphone amplifier into the >> clipping range. If this happens, AF is muted until you reduce signal >> levels, protecting your ears (and transducers). >> >> Normally, this will only happen if you turn off AGC while an extremely >> strong signal is present. If you hear the receiver mute under these >> circumstances, simply reduce gain by some means (back down RF GAIN, >> turn off the preamp, turn on the attenuator, or turn AGC ON). >> >> Another possible source of excessive audio is a DSP numeric overrange. >> DSP code has been changed to eliminate such cases, and we've had over >> 100 K3 users field-testing this new code with no reported AF >> anomalies. But the new AF output protection is always in effect, so it >> acts as a backup. >> >> Please send any questions to k3supp...@elecraft.com. For instructions >> on how to load beta firmware, see: >> >> http://www.elecraft.com/K3/k3_software.htm >> >> 73, >> Wayne >> N6KR >> >> ______________________________________________________________ >> 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 >> > > > > -- > 73 de James K2QI > ______________________________________________________________ > 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 ______________________________________________________________ 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
