Re: [Elecraft] K3 Strange noise
n4lq wrote: > > With the antenna disconnected, it disappears. It can be heard > in any mode. I can swing the manual notch across the spectrum and it > disappears when set to about 360HZ. > > > No antenna no noise - you have something nearby radiating the noise. 360Hz is the 6th harmonic of the AC power line. Put the rig in the AM mode and tune up from the broadcast band looking for peaks in noise. It will likely sound like a buzz on AM, not like what you are hearing but it will be the main source of what you hear. You will probably find some really strong ones in the lower freq ranges - then pick one that is loudest and switch off each breaker in your electrical panel until it goes away - of it does, look for what is connected to that circuit. If it doesn't, you have a noise source outside your home. Good luck. Gill W4RYW -- View this message in context: http://n2.nabble.com/K3-Strange-noise-tp1302286p1308129.html Sent from the Elecraft mailing list archive at Nabble.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] K3: Strange Noise
Nothing similar here on #0215 with FW 2.38/1.90 Steve. 73 de Mike, zl1mh. No virus found in this outgoing message. Checked by AVG - http://www.avg.com Version: 8.0.173 / Virus Database: 270.7.6/1710 - Release Date: 10/6/2008 9:23 AM ___ 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 Strange noise
Steve Do you have a switching power supply? Is there one near it? Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? --- On Mon, 10/6/08, n4lq <[EMAIL PROTECTED]> wrote: From: n4lq <[EMAIL PROTECTED]> Subject: [Elecraft] K3 Strange noise To: Elecraft@mailman.qth.net Date: Monday, October 6, 2008, 6:45 PM Recently I've been hearing a strange noise. I've installed the latest FW 2.46 but I'm not sure when this started. It's only audible from an external speaker and cannot be heard through the front headphone jack. The noise is a random, pulsating tone of about 360Hz and sounds a bit like RTTY but only one tone. It follows the band noise. It shows up on any band, any frequency. With the antenna disconnected, it disappears. It can be heard in any mode. I can swing the manual notch across the spectrum and it disappears when set to about 360HZ. Please someone check for this. Settings: 1. Antenna connected 2. Tune to any band, any mode. 3. Do not tune in a signal. 4. Must use an external speaker plugged into rear jack. 5. Fitler opened wide. 6. Listen closley under the band noise for low pitch, pulsating tone around 320 to 400 hz. Let me know if you hear anything like this. Thanks. Steve Ellington [EMAIL PROTECTED] ___ 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 Strange noise
On Mon, 06 Oct 2008 19:45:01 -0400, Steve Ellington wrote: >Recently I've been hearing a strange noise. I've installed the latest FW >2.46 but I'm not sure when this started. >It's only audible from an external speaker and cannot be heard through the >front headphone jack. Is your AFX on? I think that can produce weird results through a mono speaker. 73, Drew AF2Z ___ 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 Strange noise
G'morning, Steve: I set my K3 up as you specified, listening on 20(nothing but noise at this hour) and hear nothing like you describe. Nothing showing up on Spectrogram, either. 73, Ken K3IU K3 #202 n4lq wrote: Recently I've been hearing a strange noise. I've installed the latest FW 2.46 but I'm not sure when this started. It's only audible from an external speaker and cannot be heard through the front headphone jack. The noise is a random, pulsating tone of about 360Hz and sounds a bit like RTTY but only one tone. It follows the band noise. It shows up on any band, any frequency. With the antenna disconnected, it disappears. It can be heard in any mode. I can swing the manual notch across the spectrum and it disappears when set to about 360HZ. Please someone check for this. Settings: 1. Antenna connected 2. Tune to any band, any mode. 3. Do not tune in a signal. 4. Must use an external speaker plugged into rear jack. 5. Fitler opened wide. 6. Listen closley under the band noise for low pitch, pulsating tone around 320 to 400 hz. Let me know if you hear anything like this. Thanks. Steve Ellington [EMAIL PROTECTED] ___ 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
[Elecraft] K3 Strange noise
Recently I've been hearing a strange noise. I've installed the latest FW 2.46 but I'm not sure when this started. It's only audible from an external speaker and cannot be heard through the front headphone jack. The noise is a random, pulsating tone of about 360Hz and sounds a bit like RTTY but only one tone. It follows the band noise. It shows up on any band, any frequency. With the antenna disconnected, it disappears. It can be heard in any mode. I can swing the manual notch across the spectrum and it disappears when set to about 360HZ. Please someone check for this. Settings: 1. Antenna connected 2. Tune to any band, any mode. 3. Do not tune in a signal. 4. Must use an external speaker plugged into rear jack. 5. Fitler opened wide. 6. Listen closley under the band noise for low pitch, pulsating tone around 320 to 400 hz. Let me know if you hear anything like this. Thanks. Steve Ellington [EMAIL PROTECTED] ___ 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
