RE: [Elecraft] K3: the "strange problem" - pinched audio
In my case the K3 is working alone. 73, Trond LA8NHA -Opprinnelig melding- Fra: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne av DOUGLAS ZWIEBEL Sendt: 15 December, 2008 6:00 PM Til: Elecraft Reflector Emne: [Elecraft] K3: the "strange problem" - pinched audio I have ONLY experienced something like this when using my logging program to "drive" the K3. I have never seen this when the computer is turned off and I use the K3 "all by itself." Here is what I did to "solve" the problem when using the computer...with the computer / contest software running: Set the VFO A and VFO B settings as I like. Using the K3, toggle the BAND switch (top left of K3) up one band and down one band (to get back to where I started). Now go the next band (either direction) and repeat: Set VFO A and B as you wish, then toggle up/down on band. Now go to the third band and repeat. After doing this for every band, things will "stay put" as I change bands using the computer to drive the changes. I do not know if this is related or not to the "pinched audio" problem, but it sounds close to what has been described. Are you folks using the K3 in stand-alone mode or using a computer to change from VFO A to B, etc? de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Strange problem when switching modes from VFO A to
Recognized this problem today for the first time with S/N 1933 FW 2.47. All I did was changing VFO's and was suddenly unreadable in the other end. The other station changed from lower sideband to the upper without success. He could very well here my signals but unable to read them. The VFO B was in CW mode when I changed between the two. Switching the rig off/on fixed the problem. For info only. 73, Trond LA8NHA -Opprinnelig melding- Fra: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne av Mike Scott Sendt: 15 December, 2008 3:40 PM Til: Elecraft@mailman.qth.net Emne: [Elecraft] Strange problem when switching modes from VFO A to >I have VFO A programmed for CW on each band, VFO B programmed for SSB. Power up the K3 on VFO A then switch over to VFO B and the signal generated is extremely distorted and sounds like it is being transmitted via a very narrow filter. To correct this problem simply switch the mode from L or USB to CW and back again to L or USB. >Any suggestions ? >Jack, W3TMZ Jack, I sometimes come up with the same pinched audio that you are reporting. My situation is not as repeatable as yours. I have the same VFO A and VFO B set up as you do for CW/SSB. When my pinched audio has occurred I believe it happened after an operation just like you describe by switching over to VFO B. I tend to correct the problem with a power-off reset and haven't tried your mode-change solution. For what it is worth, this problem has been reported a few times by me and one other person that I know of. It has occurred over multiple firmware installations. My problem seems to have not occurred in quite some time now, ever since I enabled the noise gate function. Since Elecraft has been unable to duplicate the problem they are of course stuck. They have been diligent in trying to replicate the problem. If you have not enabled the noise gate, try it and let us all know if you still have the problem. I am wondering if the noise gate is causing the state of the audio path to be different such that it avoids the issue from surfacing. One other tidbit, perhaps unrelated but I pass on just in case it is related. I notice that when the K3 powers up in SSB mode (2.7 KHz filter) that the receive audio initially comes up in a narrow band pass and then shifts to the 2.7 KHz filter bandwidth. I am wondering if the transmit audio is in a similar sequence and gets stuck in a narrow pass band and the startup sequence on the transmit side never completes until a mode change. Here is the start up sequence as seen through the receive side: 1. Hit the power button at time zero 2. Audio comes up in a band limited to approximately 450 Hz to 850 Hz at roughly 2 1/2 seconds after sequence starts. The band limited phase lasts maybe a half second or less. I note that if we tried to transmit through that kind of band pass filter the audio would indeed be pinched. 3. Then broadband audio comes up through the 2.7 KHz filter with AGC wide open at 3.4 to 3.5 seconds 4. Then normal audio with under AGC control after 3.6 seconds (the 100 msec or so at the end of the sequence seems to cause the noise blast that some of us have been reporting, Elecraft is testing a change to this right now). Mike Scott - AE6WA Tarzana, CA (DM04 / near LA) K3-100 #508/ KX1 #1311 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Earning Customer Loyalty
I think many of us experienced failed encoders, mine failed the 1. Day of arrival. VFO A. But as always the customer service from Elecraft is excellent and a new encoder arrived after a few days. Most likely there have been a tough pressure at the production line in the past and the quality control have failed in some cases. I can live with this since the products otherwise shines like diamonds :-) 73, Trond LA8NHA K1#2575 K2#6594 K3#1933 -Opprinnelig melding- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] På vegne av Tom Wylie Sendt: 11 December, 2008 10:26 AM Til: Ken Widelitz Kopi: elecraft@mailman.qth.net Emne: Re: [Elecraft] Earning Customer Loyalty My radio is S/n #1272 The B encoder failed 1 day after build. An email brought a new encoder to Scotland in 3 days, but why did it fail in the first place? Is it a bad batch? Tom GM4FDM I just love my K3 Ken Widelitz wrote: > > I had a two week old K-3 fail after I brought it to PEI for CQWW. The > VFO B knob stopped working so I couldnt even change menu settings. I > was able to use the radio in CQWW. I brought it home, got an RMA and > sent it in to Gary. Within days he called me to tell me it wouldnt > fail on the bench, but that he was going to change the VFO B encoder > anyway. That is the kind of pro-active customer service that earns my > customer loyalty. I know, Im preaching to the choir here. Still, it > is nice to see a company, any company, doing it right with both > product and service. > > 73, Ken, K6LA / VY2TT > > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > > > > --- > avast! Antivirus: Inbound message clean. > Virus Database (VPS): 081210-0, 10/12/2008 > Tested on: 11/12/2008 09:20:37 > avast! - copyright (c) 1988-2008 ALWIL Software. > http://www.avast.com > > > > > -- So I met the bloke who invented crosswords today. I can't remember his name, it's P something T something R. --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 081210-0, 10/12/2008 Tested on: 11/12/2008 09:25:53 avast! - copyright (c) 1988-2008 ALWIL Software. http://www.avast.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Noisy fans?
On serial number 1993, one of the fans kicks in pretty early and there is no doubt what's going on. With headphones this is not a problem, but without I have problems when listening to weak cw-signals. Compared to my earlier Omni 7, which was without fans this is a step down regarding noise. Maybe some of us have got fans which is not within Elecrafts specs ? 73, Trond LA8NHA K1 # 1995 K2 # 6594 -Opprinnelig melding- Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] På vegne av W7TMT Sendt: 09 December, 2008 7:24 AM Til: Elecraft@mailman.qth.net Emne: RE: [Elecraft] K3 Noisy fans? I ran my K3 hard enough over the weekend to think about monitoring the PA temp. As I was CQing on Saturday when condx were el-stinko from where I am and responses were few and far between I watched the temp slowly rise until it got to 50C and then stabilize. Curious to see what the fans sounded like I took off the phones and couldn't hear the fans at all. I put my hand over the vents on top and could feel the air flow so I knew they were running but it wasn't until I put my head down close to the rig that I could hear them. Mine are very quite even when running at nearly full flow. Just my observations of course with S/N 1889. 73, Patrick, W7TMT > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Missouri Guy > Sent: Monday, December 08, 2008 9:31 PM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] K3 Noisy fans? > > I was trying to ferret out some weak signals on 160m when the > cooling fans switched on, making it very hard to hear over > the "whine" of the fans (or fan) even through the padding on > my headphones. > > Has anyone tried to quiet them down with vibration isolators, etc? > > Charlie, N0TT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
