Tom: The other day I was in contact with Don, N4ZZ, and he was complaining about a drop in power output from the K-3 of approximately 50% on occasion, particularly when he was driving his amplifier. He was using the latest software version 3.79. Although it is not exactly the problem you have described it was a power output instability problem which had not been there before. I am currently using version 3.77. Although I downloaded 3.79, I decided to hold off installing it until more is known as to whether there is a problem or not with that version. I will say I've seen nothing with version 3.77. The power output seems quite stable. I don't know whether there is or is not a problem but I have seen several references to output power instability with the latest version. There may be something to this. Perhaps you could reload version 3.77 and see whether the problem persists. Happy Easter.
Bruce-W8FU -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tom W8JI Sent: Tuesday, March 30, 2010 9:35 AM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Odd power/ALC problem I unloaded the firmware by going back to an earlier version. After seeing it worked "OK" on USB, I deleted the new files from the K3 utility, reloaded them in a new folder, and installed from that folder. The problem repeats. The problem seems to go away if I offset the SSB TX filter by -800 Hz. ----- Original Message ----- From: "Don Wilhelm" <d...@w3fpr.com> To: "Tom W8JI" <w...@w8ji.com> Cc: <elecraft@mailman.qth.net> Sent: Tuesday, March 30, 2010 8:45 AM Subject: Re: [Elecraft] Odd power/ALC problem > Tom, > > Did you use K3 Utility in Advanced mode and check all the > boxes and click the box to load all checked items? Any > other method will not work because the K3 is already > loaded with the same level that you are trying to re-load. > > I believe the filter offset for LSB/USB is controlled in > the DSP code, so that must be force loaded to make any > change. > > 73, > Don W3FPR > > Tom W8JI wrote: >> Already deleted the firmware from my computer and >> re-downloaded the firmware from the elecraft site fresh. >> No help. >> >> ----- Original Message ----- From: "Don Wilhelm" >> <w3...@embarqmail.com> >> To: "Tom W8JI" <w...@w8ji.com> >> Cc: <elecraft@mailman.qth.net> >> Sent: Monday, March 29, 2010 10:43 PM >> Subject: Re: [Elecraft] Odd power/ALC problem >> >> >>> Tom, >>> >>> I certainly don't know what is going on with your >>> problem, but since no one else has mentioned anything >>> like that and teh current firmware has been out for a >>> while, I would guess that you have a corrupt firmware >>> download. I would get a fresh copy from the Elecraft >>> website and re-load it. >>> No promises, but it certainly is worth a try. If that >>> does not fix it, a note th K3support is in order. >>> >>> 73, >>> Don W3FPR >>> >>> Tom W8JI wrote: >>>> I have an odd power and ALC problem. >>>> >>>> When I load the latest firmware into my K3, it nearly >>>> quits working on USB. The power output is very low with >>>> occasional high peaks. LSB remains good. >>>> >>>> If I offset the filter -800 Hz, USB starts working OK. >>>> >>>> If I make no other changes and go back to the older >>>> firmware, the problem goes away. >>>> >>>> Any ideas anyone? >>>> >>>> Tom >>>> ______________________________________________________________ >>>> 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 >>>> ------------------------------------------------------------------------ >>>> >>>> >>>> >>>> No virus found in this incoming message. >>>> Checked by AVG - www.avg.com Version: 9.0.791 / Virus >>>> Database: 271.1.1/2777 - Release Date: 03/29/10 >>>> 02:32:00 >>>> >>>> >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com Version: 9.0.791 / Virus >> Database: 271.1.1/2777 - Release Date: 03/29/10 02:32:00 >> >> ______________________________________________________________ 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
