* On 2010 06 Nov 06:15 -0500, dalej wrote: > I just loaded this beta version 4.18 and now I get loud crackling from the > speaker when tuning though the APF filter, also, the audio goes away. I > uploaded the firmware though the P3 twice, once power on P3 and the second > time power off with the same results. I will next try loading the firmware > directly into the K3. If I have the same result, I will then revert back to > the previous version, beta 4.17, which worked fine including the power out.
I take it you are tuning the APF with the SHIFT control? Ouch! I just replicated your issue on my K3! Once I tuned the APF above 1 kHz the crackling begins. During this time the APF function disappears and with each step on the display a loud CRACK! is heard in the speaker. Once I tune the APF below 270 Hz the CRACK! goes away and the APF is restored. At 1 kHz I hear a loud POP! and then the CRACK! occurs for each step as the knob is advanced to the right although the displayed APF frequency remains at 1 kHz. At 270 Hz I hear a BOOP! and APF is restored. I've done this several times as I've typed this message. When the APF is in the crackle mode, turning it off and then on does not change the crackle state, in fact more crackle is heard upon reactivation. Powering off the K3 while in "crackle" mode kills the crackle and APF resumes its function. I am running MCU 4.18, DSP 2.67, and FPF 1.14 on K3 #4762. HTH, 73, de Nate >> -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Ham radio, Linux, bikes, and more: http://n0nb.us/index.html ______________________________________________________________ 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
