Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz (Problem Resolved but Questions Remain)
As a follow-up to the e-mails that were sent to the reflector and those that I received privately, I wanted to let the group know that last night I resolved the problem I was having where audio would be lost in LSB, USB and AM when the K3's bandwidth was set to 2.8 kHz while running FW 3.30. As I mentioned yesterday, on Friday I received the DSP upgrade, so before installing it I re-loaded the K3 with FW 3.76. After doing so, the problem remained but now the audio would cut off at a BW of 3.0 kHz, returning at 3.1 kHz in all three modes. The full range of bandwidths available in the CW and DATA modes were unaffected. I replaced the DSP board and the problem remained (as expected). However, when I performed an EE Init, I found that everything began working properly. As soon as I re-loaded my latest configuration file, the problem returned. Unfortunately, my next-newest configuration file was dated August 09 and turned out to be incompatible with 3.76, so I manually re-configured the radio from scratch. All is well now. Thanks to all those who responded. Scott N7NB -Original Message- From: K6LE [mailto:k...@mac.com] Sent: Sunday, February 07, 2010 8:18 AM To: WW2PT Cc: Scott Prather; Elecraft Reflector Subject: Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz Bingo! I restored my last config (from 1/20) and problem is gone.. Now I am trying to noodle over what configuration item may have changed during the beta upgrade that caused it. At any rate, all is good now! Rick K6LE On 2/6/2010, at 11:07 , WW2PT wrote: > My K3 was working fine last time I used it. Tonight I turned it on and > noticed a similar problem -- no audio in USB or LSB modes whenever I > set the width to 3.00 kHz or less. Tried downgrading from 3.76 to 3.63 > but no change. Checked all filter settings in the config menu, nothing > out of place. All other modes were fine. > > On a hunch, I restored my last configuration backup file. It worked! > Everything seems to be behaving well again. > > 73 de WW2PT > > > > > On Feb 6, 2010, at 12:45 AM, Scott Prather wrote: > >> All: This evening when running FW 3.76 I'm seeing a problem with my >> K3 that >> I've never seen before. >> >> When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth >> down to >> 2.8 kHz will result in total loss of audio, even though the S-meter >> continues to read incoming signal strength. I've tried an EE-Init and >> reloaded the configuration, but the problem remains. Thinking this >> might be >> related to 3.76, I went back to 3.30 and I have exactly the same >> problem. If >> I turn on the sub receiver and change its BW using BSET, it loses >> LSB, USB >> and AM audio at 2.8 kHz as well. To get audio to return, all I need >> to do is >> change the BW to 2.9 kHz or greater on either the main or the sub. >> >> Looking through the reflector postings, it looks like someone saw >> something >> similar to this in the DATA mode a few months back, and pressing the >> A/B key >> would clear it. However, in my case the only way I can restore audio >> is to >> change the BW to 2.9 kHz or greater. In the CW and DATA modes, the >> audio >> does not drop out at any bandwidth setting. >> >> Does anyone have a suggestion as to what might be going on? __ 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
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
Bingo! I restored my last config (from 1/20) and problem is gone.. Now I am trying to noodle over what configuration item may have changed during the beta upgrade that caused it. At any rate, all is good now! Rick K6LE On 2/6/2010, at 11:07 , WW2PT wrote: > My K3 was working fine last time I used it. Tonight I turned it on and > noticed a similar problem -- no audio in USB or LSB modes whenever I > set the width to 3.00 kHz or less. Tried downgrading from 3.76 to 3.63 > but no change. Checked all filter settings in the config menu, nothing > out of place. All other modes were fine. > > On a hunch, I restored my last configuration backup file. It worked! > Everything seems to be behaving well again. > > 73 de WW2PT > > > > > On Feb 6, 2010, at 12:45 AM, Scott Prather wrote: > >> All: This evening when running FW 3.76 I'm seeing a problem with my >> K3 that >> I've never seen before. >> >> When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth >> down to >> 2.8 kHz will result in total loss of audio, even though the S-meter >> continues to read incoming signal strength. I've tried an EE-Init and >> reloaded the configuration, but the problem remains. Thinking this >> might be >> related to 3.76, I went back to 3.30 and I have exactly the same >> problem. If >> I turn on the sub receiver and change its BW using BSET, it loses >> LSB, USB >> and AM audio at 2.8 kHz as well. To get audio to return, all I need >> to do is >> change the BW to 2.9 kHz or greater on either the main or the sub. >> >> Looking through the reflector postings, it looks like someone saw >> something >> similar to this in the DATA mode a few months back, and pressing the >> A/B key >> would clear it. However, in my case the only way I can restore audio >> is to >> change the BW to 2.9 kHz or greater. In the CW and DATA modes, the >> audio >> does not drop out at any bandwidth setting. >> >> Does anyone have a suggestion as to what might be going on? __ 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
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
My K3 was working fine last time I used it. Tonight I turned it on and noticed a similar problem -- no audio in USB or LSB modes whenever I set the width to 3.00 kHz or less. Tried downgrading from 3.76 to 3.63 but no change. Checked all filter settings in the config menu, nothing out of place. All other modes were fine. On a hunch, I restored my last configuration backup file. It worked! Everything seems to be behaving well again. 73 de WW2PT On Feb 6, 2010, at 12:45 AM, Scott Prather wrote: > All: This evening when running FW 3.76 I'm seeing a problem with my > K3 that > I've never seen before. > > When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth > down to > 2.8 kHz will result in total loss of audio, even though the S-meter > continues to read incoming signal strength. I've tried an EE-Init and > reloaded the configuration, but the problem remains. Thinking this > might be > related to 3.76, I went back to 3.30 and I have exactly the same > problem. If > I turn on the sub receiver and change its BW using BSET, it loses > LSB, USB > and AM audio at 2.8 kHz as well. To get audio to return, all I need > to do is > change the BW to 2.9 kHz or greater on either the main or the sub. > > Looking through the reflector postings, it looks like someone saw > something > similar to this in the DATA mode a few months back, and pressing the > A/B key > would clear it. However, in my case the only way I can restore audio > is to > change the BW to 2.9 kHz or greater. In the CW and DATA modes, the > audio > does not drop out at any bandwidth setting. > > Does anyone have a suggestion as to what might be going on? __ 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
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
Jeff: Thanks for the suggestion concerning the K3's filter configuration, however, I'd already checked this. According to the K3 Configuration Utility, FL3 is enabled for LSB, USB and AM in both receivers. Another point to keep in mind is that FL3 is only selected at a BW setting of 2.7 kHz or below, FL2 is still used at 2.8 kHz. I just received the DSP board upgrade yesterday and intend to install it this weekend. However, I thought that before I make any hardware changes there might be some value in trying to determine what happened in case the swap-out clears this issue. Scott N7NB -Original Message- From: Joe Planisky [mailto:jp...@jeffnet.org] Sent: Saturday, February 06, 2010 7:09 AM To: Scott Prather Cc: 'Elecraft Reflector' Subject: Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz Hi Scott, Just a shot in the dark: Have you checked your filter configuration? If you happen to have an empty slot enabled for those modes, you'll get exactly the behavior you described. Use the K3 Utility to look for a slot that you know to be empty but with the Bandwidth set to 2.8 and the LSB, USB, and AM boxes checked. 73 -- Joe KB8AP On Feb 5, 2010, at 10:45 PM, Scott Prather wrote: > All: This evening when running FW 3.76 I'm seeing a problem with my > K3 that > I've never seen before. > > When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth > down to > 2.8 kHz will result in total loss of audio, even though the S-meter > continues to read incoming signal strength. ... > To get audio to return, all I need to do is > change the BW to 2.9 kHz or greater on either the main or the sub. > ... > Does anyone have a suggestion as to what might be going on? > > Tnx. > > Scott > N7NB __ 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
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
Hi Scott, Just a shot in the dark: Have you checked your filter configuration? If you happen to have an empty slot enabled for those modes, you'll get exactly the behavior you described. Use the K3 Utility to look for a slot that you know to be empty but with the Bandwidth set to 2.8 and the LSB, USB, and AM boxes checked. 73 -- Joe KB8AP On Feb 5, 2010, at 10:45 PM, Scott Prather wrote: > All: This evening when running FW 3.76 I'm seeing a problem with my > K3 that > I've never seen before. > > When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth > down to > 2.8 kHz will result in total loss of audio, even though the S-meter > continues to read incoming signal strength. ... > To get audio to return, all I need to do is > change the BW to 2.9 kHz or greater on either the main or the sub. > ... > Does anyone have a suggestion as to what might be going on? > > Tnx. > > Scott > N7NB __ 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
Re: [Elecraft] K3 Loses RX Audio at BW of 2.8 kHz
I have been noticing a similar anomaly since 3.76. The only difference is it happens when I go to 2.9. As I increase the width I see the filter switch at 2.8 (I have the 2.7 SSB filter and 6.0 AM filter) and then at 2.9 it goes dead until I advance it to 3.0 and from then on it continues as it should. Also when it goes from dead to audio at 3.0 I get a nasty click. Scott, maybe it's a Prather deal. Rick Prather K6LE On 2/5/2010, at 10:45 , Scott Prather wrote: > All: This evening when running FW 3.76 I'm seeing a problem with my K3 that > I've never seen before. > > When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth down to > 2.8 kHz will result in total loss of audio, even though the S-meter > continues to read incoming signal strength. I've tried an EE-Init and > reloaded the configuration, but the problem remains. Thinking this might be > related to 3.76, I went back to 3.30 and I have exactly the same problem. If > I turn on the sub receiver and change its BW using BSET, it loses LSB, USB > and AM audio at 2.8 kHz as well. To get audio to return, all I need to do is > change the BW to 2.9 kHz or greater on either the main or the sub. > > Looking through the reflector postings, it looks like someone saw something > similar to this in the DATA mode a few months back, and pressing the A/B key > would clear it. However, in my case the only way I can restore audio is to > change the BW to 2.9 kHz or greater. In the CW and DATA modes, the audio > does not drop out at any bandwidth setting. > > Does anyone have a suggestion as to what might be going on? > > Tnx. > > Scott > N7NB > __ 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] K3 Loses RX Audio at BW of 2.8 kHz
All: This evening when running FW 3.76 I'm seeing a problem with my K3 that I've never seen before. When the K3 is in the LSB, USB or AM mode, adjusting the bandwidth down to 2.8 kHz will result in total loss of audio, even though the S-meter continues to read incoming signal strength. I've tried an EE-Init and reloaded the configuration, but the problem remains. Thinking this might be related to 3.76, I went back to 3.30 and I have exactly the same problem. If I turn on the sub receiver and change its BW using BSET, it loses LSB, USB and AM audio at 2.8 kHz as well. To get audio to return, all I need to do is change the BW to 2.9 kHz or greater on either the main or the sub. Looking through the reflector postings, it looks like someone saw something similar to this in the DATA mode a few months back, and pressing the A/B key would clear it. However, in my case the only way I can restore audio is to change the BW to 2.9 kHz or greater. In the CW and DATA modes, the audio does not drop out at any bandwidth setting. Does anyone have a suggestion as to what might be going on? Tnx. Scott N7NB __ 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
