I have K3 #4340 (kit) which I purchased in spring 2010 and it has a LOUD POP at power up every time. I have it connected to an external speaker (plain speaker not an amplified one - ten inch diameter and probably 4-ohm resistance). I also note this in the internal speaker if not connected to external speaker. I does this even with audio gain at minimum. There is a shorter snap when I shut down. Guessing discharge of electrolytics in the audio amp?
The loudness of the pop is about the audio level one hears if the audio gain is advanced to 3-o'clock (75% full gain). There is an audible snap in my headphones (plugged into the front jack) at power on. The speaker is muted when I use headphones so I can hear the mild click of a relay at power on if I do not have on the headphones. I do not hear the relay due to the loud POP if speaker is used. I kind of ignore it but I worry about turning on the radio late at night as the loudness of the pop is heard in the bedroom across the hall with both doors closed. 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? DUBUS Magazine USA Rep [email protected] ====================================== ______________________________________________________________ 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
