K2 - DSP - Impressive
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I have had the DSP for the K2 now for some time. I have to admit, I got the
instructions out the first couple times I played with it, but I did not quite "get it" as far as the settings and the menu choices, and just kinda left things alone. Over the intervening weeks, when I would get on SSB to chat with friends I kept tinkering with it, and trying different settings (it didn't really seem to need to be fiddled with on CW). Eventually I had the thing so screwed up, that it was more of a hindrance than a help. So I broke down and printed out a section of the manual (I'm more of a soft copy kinda guy, but don't what to start that thread up again) and sat down at the radio to try and get the DSP back to all of its default settings. Now, as it turns out, reading through the manual, it is not abundantly obvious (for some of us denser folks) how to do this, but when I read a bit, and tinkered a bit, I worked through it just fine. Except for SSB #1 and the LowPass settings, I couldn't make that happen. Once I worked through all of the settings for each filter setup, I learned quite a bit. As many have said before me, this is a VERY impressive DSP. I did not fully understand the capabilities and settings till now. It is definitely worth the investment of time to learn. I even broke down and read through Lyle's "Design Considerations for the KDSP". As always, great stuff. Thanks again Elecraft. Not only do you supply great equipment, but your documentation gives explanations of how the equipment works, thus we become more knowledgeable operators. Thanks, and great job! -- David Wilburn [hidden email] K4DGW K2 #5982 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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David,
Can you shared the settings you settled on, by mode? Especially include the Beta and Decay settings. 73, Steve N6VL K2 #2289 -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of David Wilburn Sent: Monday, October 15, 2007 4:15 PM To: Elecraft Discussion List Subject: [Elecraft] K2 - DSP - Impressive I have had the DSP for the K2 now for some time. I have to admit, I got the instructions out the first couple times I played with it, but I did not quite "get it" as far as the settings and the menu choices, and just kinda left things alone. Over the intervening weeks, when I would get on SSB to chat with friends I kept tinkering with it, and trying different settings (it didn't really seem to need to be fiddled with on CW). Eventually I had the thing so screwed up, that it was more of a hindrance than a help. So I broke down and printed out a section of the manual (I'm more of a soft copy kinda guy, but don't what to start that thread up again) and sat down at the radio to try and get the DSP back to all of its default settings. Now, as it turns out, reading through the manual, it is not abundantly obvious (for some of us denser folks) how to do this, but when I read a bit, and tinkered a bit, I worked through it just fine. Except for SSB #1 and the LowPass settings, I couldn't make that happen. Once I worked through all of the settings for each filter setup, I learned quite a bit. As many have said before me, this is a VERY impressive DSP. I did not fully understand the capabilities and settings till now. It is definitely worth the investment of time to learn. I even broke down and read through Lyle's "Design Considerations for the KDSP". As always, great stuff. Thanks again Elecraft. Not only do you supply great equipment, but your documentation gives explanations of how the equipment works, thus we become more knowledgeable operators. Thanks, and great job! -- David Wilburn [hidden email] K4DGW K2 #5982 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: [hidden email] 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 |
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In reply to this post by dave.wilburn
I set everything back to the default settings. Then the only ones I
ended up change was the SSB & CW gain settings. After that, when I want to use the DSP, I would step through the different "freq widths" that are supplied by S1(NR1, NR2, NR3, NR4), then S2(NR1, NR2, NR3, NR4), and so on. This is the piece that I did not "get" the first time around. My initial tinkering had focused on the settings you mentioned. But it seems to me, that tinkering with Beta and Decay, before you have worked through the existing setup, that is the application of the various filter widths to you problem noise, is going about the process from the wrong end. Perhaps Lyle can explain it better. I hit DISPLAY to get into the DSP settings, usually C1 .nr (for CW) or S1 .nr .nt (for SSB) is seen at this point. If not, press RCL untill one of them is visible. Then pressing STORE brings up C1 .nr1, pressing STORE again, brings up C1 .nr2, and so on till you are back at C1 .nr1. If I do not find a suitable setting in the first 4 filter settings, I then press AFIL to take me to CF2. Now pressing DISPLAY followed by STORE brings up C2 .nr, and I can go through these steps again. This cycle can be continued through CF3 and CF4. In performing these steps, I have not needed to fiddle with Beta and Decay. I assume and changes to Beta and Decay, impact all 16 filters per mode. Hope this helps. It sure made a big difference in how I use the radio. David Wilburn [hidden email] K4DGW K2 #5982 FP#-1751 Steve Kallal wrote: > David, > > Can you shared the settings you settled on, by mode? Especially include the > Beta and Decay settings. > > 73, > > Steve N6VL > K2 #2289 > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of David Wilburn > Sent: Monday, October 15, 2007 4:15 PM > To: Elecraft Discussion List > Subject: [Elecraft] K2 - DSP - Impressive > > I have had the DSP for the K2 now for some time. I have to admit, I got the > instructions out the first couple times I played with it, but I did not > quite "get it" as far as the settings and the menu choices, and just kinda > left things alone. > > Over the intervening weeks, when I would get on SSB to chat with friends I > kept tinkering with it, and trying different settings (it didn't really seem > to need to be fiddled with on CW). Eventually I had the thing so screwed > up, that it was more of a hindrance than a help. > > So I broke down and printed out a section of the manual (I'm more of a soft > copy kinda guy, but don't what to start that thread up again) and sat down > at the radio to try and get the DSP back to all of its default settings. > Now, as it turns out, reading through the manual, it is not abundantly > obvious (for some of us denser folks) how to do this, but when I read a bit, > and tinkered a bit, I worked through it just fine. Except for SSB #1 and > the LowPass settings, I couldn't make that happen. > > Once I worked through all of the settings for each filter setup, I learned > quite a bit. As many have said before me, this is a VERY impressive DSP. I > did not fully understand the capabilities and settings till now. It is > definitely worth the investment of time to learn. > > I even broke down and read through Lyle's "Design Considerations for the > KDSP". > As always, great stuff. Thanks again Elecraft. Not only do you supply > great equipment, but your documentation gives explanations of how the > equipment works, thus we become more knowledgeable operators. Thanks, and > great job! > Elecraft mailing list Post to: [hidden email] 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 |
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David,
Wow, the default Beta and Decay settings leave me with a lot of distortion. I can tolerate more distortion on SSB than on CW. The denoiser makes CW sound scratchy, but till copyable. I left the Beta setting close to the default, but really reduced the Decay setting. I put it down to 30, though I did have it down to 5 at one point. I guess I am used to DSP with less distortion. My 756PROII is able to reduce the noise level without the degree of distortion present in the KDSP2. The KDSP2 does get the job done. I starting to prefer the bandpass filtering over the denoiser, and only use the denoiser if really needed. For example, I use the narrowest filter setting of 50 Hz, for the CW bandpass filter. I've found it can work better than the denoiser in most situations. 73, Steve N6VL K2 #2289 -----Original Message----- From: David Wilburn [mailto:[hidden email]] Sent: Sunday, October 21, 2007 10:20 AM To: Steve Kallal Cc: 'Elecraft Discussion List' Subject: Re: [Elecraft] K2 - DSP - Impressive I set everything back to the default settings. Then the only ones I ended up change was the SSB & CW gain settings. After that, when I want to use the DSP, I would step through the different "freq widths" that are supplied by S1(NR1, NR2, NR3, NR4), then S2(NR1, NR2, NR3, NR4), and so on. This is the piece that I did not "get" the first time around. My initial tinkering had focused on the settings you mentioned. But it seems to me, that tinkering with Beta and Decay, before you have worked through the existing setup, that is the application of the various filter widths to you problem noise, is going about the process from the wrong end. Perhaps Lyle can explain it better. I hit DISPLAY to get into the DSP settings, usually C1 .nr (for CW) or S1 .nr .nt (for SSB) is seen at this point. If not, press RCL untill one of them is visible. Then pressing STORE brings up C1 .nr1, pressing STORE again, brings up C1 .nr2, and so on till you are back at C1 .nr1. If I do not find a suitable setting in the first 4 filter settings, I then press AFIL to take me to CF2. Now pressing DISPLAY followed by STORE brings up C2 .nr, and I can go through these steps again. This cycle can be continued through CF3 and CF4. In performing these steps, I have not needed to fiddle with Beta and Decay. I assume and changes to Beta and Decay, impact all 16 filters per mode. Hope this helps. It sure made a big difference in how I use the radio. David Wilburn [hidden email] K4DGW K2 #5982 FP#-1751 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by dave.wilburn
I do not argue that my settings my settings could likely use some
tweaking. My epiphany was concerning how the DSP cycled through the different settings. The other thing that helped me was cranking the gain up. With the gain set to higher settings, the higher beta is more tolerable. I actually end up pulling back on the AF settings at times. But based on your statement, I went over there and played a little bit, and ended up with beta / decay settings in the 50 range, and depending on conditions, I could see it going lower. But I find if I cycle through the .nr1-4 settings, and the SF1-4, I often find a comfortable setting before I end up fiddling with the beta / decay. David Wilburn [hidden email] K4DGW K2 #5982 FP#-1751 Steve Kallal wrote: > David, > > Wow, the default Beta and Decay settings leave me with a lot of distortion. > I can tolerate more distortion on SSB than on CW. The denoiser makes CW > sound scratchy, but till copyable. I left the Beta setting close to the > default, but really reduced the Decay setting. I put it down to 30, though I > did have it down to 5 at one point. > > I guess I am used to DSP with less distortion. My 756PROII is able to reduce > the noise level without the degree of distortion present in the KDSP2. The > KDSP2 does get the job done. I starting to prefer the bandpass filtering > over the denoiser, and only use the denoiser if really needed. For example, > I use the narrowest filter setting of 50 Hz, for the CW bandpass filter. > I've found it can work better than the denoiser in most situations. > > 73, > > Steve N6VL > K2 #2289 > > -----Original Message----- > From: David Wilburn [mailto:[hidden email]] > Sent: Sunday, October 21, 2007 10:20 AM > To: Steve Kallal > Cc: 'Elecraft Discussion List' > Subject: Re: [Elecraft] K2 - DSP - Impressive > > I set everything back to the default settings. Then the only ones I ended > up change was the SSB & CW gain settings. After that, when I want to use > the DSP, I would step through the different "freq widths" > that are supplied by S1(NR1, NR2, NR3, NR4), then S2(NR1, NR2, NR3, NR4), > and so on. This is the piece that I did not "get" the first time around. > > My initial tinkering had focused on the settings you mentioned. But it > seems to me, that tinkering with Beta and Decay, before you have worked > through the existing setup, that is the application of the various filter > widths to you problem noise, is going about the process from the wrong end. > Perhaps Lyle can explain it better. > > I hit DISPLAY to get into the DSP settings, usually C1 .nr (for CW) or > S1 .nr .nt (for SSB) is seen at this point. If not, press RCL untill one > of them is visible. Then pressing STORE brings up C1 .nr1, pressing STORE > again, brings up C1 .nr2, and so on till you are back at C1 .nr1. If I do > not find a suitable setting in the first 4 filter settings, I then press > AFIL to take me to CF2. Now pressing DISPLAY followed by STORE brings up C2 > .nr, and I can go through these steps again. This cycle can be continued > through CF3 and CF4. > > In performing these steps, I have not needed to fiddle with Beta and Decay. > I assume and changes to Beta and Decay, impact all 16 filters per mode. > > Hope this helps. It sure made a big difference in how I use the radio. > > David Wilburn > [hidden email] > K4DGW > K2 #5982 > FP#-1751 > > Elecraft mailing list Post to: [hidden email] 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 |
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I share with Steve's observation. KDSP2 is good in CW mode but not so good
in SSB when compared with IC756pro3. I eventually sold the KDSP2. Artifacts in SSB is the thing I don't like for KDSP2. 73 Johnny VR2XMC ----- Original Message ----- From: "David Wilburn" <[hidden email]> To: "Steve Kallal" <[hidden email]> Cc: "'Elecraft Discussion List'" <[hidden email]> Sent: Monday, October 22, 2007 8:10 AM Subject: Re: [Elecraft] K2 - DSP - Impressive >I do not argue that my settings my settings could likely use some tweaking. >My epiphany was concerning how the DSP cycled through the different >settings. The other thing that helped me was cranking the gain up. With >the gain set to higher settings, the higher beta is more tolerable. I >actually end up pulling back on the AF settings at times. But based on >your statement, I went over there and played a little bit, and ended up >with beta / decay settings in the 50 range, and depending on conditions, I >could see it going lower. But I find if I cycle through the .nr1-4 >settings, and the SF1-4, I often find a comfortable setting before I end up >fiddling with the beta / decay. > > David Wilburn > [hidden email] > K4DGW > K2 #5982 > FP#-1751 > > > Steve Kallal wrote: >> David, >> >> Wow, the default Beta and Decay settings leave me with a lot of >> distortion. >> I can tolerate more distortion on SSB than on CW. The denoiser makes CW >> sound scratchy, but till copyable. I left the Beta setting close to the >> default, but really reduced the Decay setting. I put it down to 30, >> though I >> did have it down to 5 at one point. >> >> I guess I am used to DSP with less distortion. My 756PROII is able to >> reduce >> the noise level without the degree of distortion present in the KDSP2. >> The >> KDSP2 does get the job done. I starting to prefer the bandpass filtering >> over the denoiser, and only use the denoiser if really needed. For >> example, >> I use the narrowest filter setting of 50 Hz, for the CW bandpass filter. >> I've found it can work better than the denoiser in most situations. >> >> 73, >> >> Steve N6VL >> K2 #2289 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by dave.wilburn
I.M.H.O only the audio notch is impressive with the KDSP2.
The CW noise reduction is OK, but the SSB has far too many artifacts present to be useful. Much better results from a BHI external unit. I do hope that the K3 DSP is better. 73 Stewart G3RXQ On Sun, 21 Oct 2007 13:20:19 -0400, David Wilburn wrote: > I set everything back to the default settings. Then the only ones I > ended up change was the SSB & CW gain settings. After that, when I > want to use the DSP, I would step through the different "freq widths" > that are supplied by S1(NR1, NR2, NR3, NR4), then S2(NR1, NR2, NR3, > NR4), and so on. This is the piece that I did not "get" the first > time around. > > My initial tinkering had focused on the settings you mentioned. But > it seems to me, that tinkering with Beta and Decay, before you have > worked through the existing setup, that is the application of the > various filter widths to you problem noise, is going about the process > from the wrong end. Perhaps Lyle can explain it better. > > I hit DISPLAY to get into the DSP settings, usually C1 .nr (for CW) or > S1 .nr .nt (for SSB) is seen at this point. If not, press RCL > untill one of them is visible. Then pressing STORE brings up C1 .nr1, > pressing STORE again, brings up C1 .nr2, and so on till you are back > at C1 .nr1. If I do not find a suitable setting in the first 4 filter > settings, I then press AFIL to take me to CF2. Now pressing DISPLAY > followed by STORE brings up C2 .nr, and I can go through these steps > again. This cycle can be continued through CF3 and CF4. > > In performing these steps, I have not needed to fiddle with Beta and > Decay. I assume and changes to Beta and Decay, impact all 16 filters > per mode. > > Hope this helps. It sure made a big difference in how I use the radio. > > David Wilburn > [hidden email] > K4DGW > K2 #5982 > FP#-1751 > > > Steve Kallal wrote: >> David, >> >> Can you shared the settings you settled on, by mode? Especially include the >> Beta and Decay settings. >> >> 73, >> >> Steve N6VL >> K2 #2289 >> >> -----Original Message----- >> From: [hidden email] >> [mailto:[hidden email]] On Behalf Of David Wilburn >> Sent: Monday, October 15, 2007 4:15 PM >> To: Elecraft Discussion List >> Subject: [Elecraft] K2 - DSP - Impressive >> >> I have had the DSP for the K2 now for some time. I have to admit, I got the >> instructions out the first couple times I played with it, but I did not >> quite "get it" as far as the settings and the menu choices, and just kinda >> left things alone. >> >> Over the intervening weeks, when I would get on SSB to chat with friends I >> kept tinkering with it, and trying different settings (it didn't really seem >> to need to be fiddled with on CW). Eventually I had the thing so screwed >> up, that it was more of a hindrance than a help. >> >> So I broke down and printed out a section of the manual (I'm more of a soft >> copy kinda guy, but don't what to start that thread up again) and sat down >> at the radio to try and get the DSP back to all of its default settings. >> Now, as it turns out, reading through the manual, it is not abundantly >> obvious (for some of us denser folks) how to do this, but when I read a bit, >> and tinkered a bit, I worked through it just fine. Except for SSB #1 and >> the LowPass settings, I couldn't make that happen. >> >> Once I worked through all of the settings for each filter setup, I learned >> quite a bit. As many have said before me, this is a VERY impressive DSP. I >> did not fully understand the capabilities and settings till now. It is >> definitely worth the investment of time to learn. >> >> I even broke down and read through Lyle's "Design Considerations for the >> KDSP". >> As always, great stuff. Thanks again Elecraft. Not only do you supply >> great equipment, but your documentation gives explanations of how the >> equipment works, thus we become more knowledgeable operators. Thanks, and >> great job! >> > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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: [hidden email] 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 |
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