No one mentioned the firmware level but I am not on any beta version. I am at MCU firmware level 4.39.
73, phil, K7PEH On Jan 13, 2012, at 12:33 PM, NZ0T wrote: > Phil, which firmware version are you using? I was using the beta 4.47 and > I developed audio problems the other night, After I deleted 4.47 and went > back to the latest production firmware all was fine. Sorry if this has > already been discussed - I just read this thread. > > 73 Bill NZ0T > > On Fri, Jan 13, 2012 at 1:32 PM, Phil Hystad-3 [via Elecraft] < > [email protected]> wrote: > >> Ron, >> >> Well, I just had a quick SSB chat with Clyde (AA7WC) (pre Noon Time net on >> 40 meters) and asked specifically for audio report with possible hum. His >> report was no hum, clear good sounding audio, with S7 signal. >> >> So I am suspicious of my florescent lights in the garage although they are >> on right now with no hum. I am thinking though that maybe there is >> something intermittent with those lights. But, then again, the "something >> loose in the mic cord" maybe be the cause too. But, I jiggled that cord >> and connection and so on quite vigorously before when I had the hum and it >> did not change the hum status. Then, when the hum disappeared, I did those >> jiggle the cord and connector on the mic tests again and the hum DID NOT >> come back. >> >> Wow, I can't believe I have spent the entire morning fooling around with >> this. I even called into work and said that I was not coming in today just >> to work on this problem. I don't really want to go outside anyway despite >> that the temperature has now risen to a toasty 36 degrees. >> >> 73, phil, K7PEH >> >> >> On Jan 13, 2012, at 11:23 AM, Ron D'Eau Claire wrote: >> >>> Good luck Phil. That last part really suggests something loose in the >> mike >>> cord as I suggested at first. >>> >>> Ron AC7AC >>> >>> -----Original Message----- >>> Ron, >>> >>> OK, now it appears I was mistaken when I said that that the hum was in >> both >>> mics. I think I flubbed something up in my previous test due to the way >>> that the macros are assigned to keys which led me to thinking that the >> hum >>> occurred in both mics. But, I learned something in this... >>> >>> One, don't try to use one of your macro assigned keys (in my case M2 and >> M1) >>> while in the menu because that merely reassigns the key to the new menu >>> entry. I made this mistake several times this morning. But, when I >>> discovered it and then reset my macro definitions, I rediscovered that >> the >>> HUM occurs in the front panel MH2 hand held mic only. I did this test >>> several times to make sure I was not confusing things. >>> >>> I discovered something else that I did not know before. PTT is actuated >> by >>> any of the methods of PTT. So, when I thought I had the headphones >> CM500 >>> mic enabled I used my foot switch for push to talk and since that worked >> for >>> some dumb reason I was thinking I had successfully switched from front >> panel >>> to rear panel. But, I had not. I also discovered that I could use the >> hand >>> mic (front panel) PTT switch even though my rear panel mic was being >> used. >>> Now, after I discovered this, I realize that it is obvious but something >>> that lead to my confusion. >>> >>> So, the problem occurs on the FRONT PANEL mic only and not the rear >> panel. >>> And, the problem occurs when the K3 is in TOTAL isolation from all AC >>> sources except for possibly me. I mean, I am holding the mic but then I >>> don't think that is a cause of the hum because I tried it with a >> insulated >>> hand and it still caused the hum on the front panel mic. >>> >>> I doubt that this is caused by wall-outlet type AC because I have erased >> all >>> AC for some of my tests. And, besides, this problem seemed to occur >> .... >>> >>> OK, while writing that last sentence something occurred to me. Another >>> change I had made on Wednesday after I had my good audio reports on the >> MH2 >>> front panel mic was that I set the configuration for the band specific >> power >>> levels to work with the KPA500. So, I just now went to test the mic and >>> change that setting around but the hum is gone. >>> >>> I repeat, the hum is gone from the front panel mic. I now can't test >> the >>> band specific power menu setting because I have no problem. >>> >>> But, I have a suspicion as to the cause now and I am going to do some >> other >>> experiments. >>> >>> 73, phil >>> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden >> email]<http://user/SendEmail.jtp?type=node&node=7185299&i=0> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> ------------------------------ >> If you reply to this email, your message will be added to the discussion >> below: >> http://elecraft.365791.n2.nabble.com/K3-Hum-on-Audio-tp7182701p7185299.html >> To start a new topic under Elecraft, email >> [email protected] >> To unsubscribe from Elecraft, click >> here<http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=365791&code=bnowdGhhbUBnbWFpbC5jb218MzY1NzkxfDE0MzcxNDc4Nzk=> >> . >> NAML<http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.InstantMailNamespace&breadcrumbs=instant+emails%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >> > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-Hum-on-Audio-tp7182701p7185563.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 ______________________________________________________________ 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
