Musings on Noise Reduction
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John: I agree: The noise reduction on the K3 is poor. To my ear, all 16 settings introduce distortion while providing minimal noise reduction. And yes, I have played around with rx eq settings. My little Kenwood 480 has much better N/R than the K3.
The N/R is my only major complaint about the K3. I hope a firmware fix soon. 73 all, Lee (K9CM) _______________________________________________ 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 |
RE: Musings on Noise Reduction
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Lee,
Sorry to say that I've had the exact opposite
experience. I haven't had a K2 for a few years. I've had a K3 since
July. I worked some in the 160m contest this weekend and with NR on
I was able to remove just about all the noise on the band and hear stations way
way down in the noise. I never had that experience with a K2 and I've used
three different K2s. What I experienced this weekend with my K3 was just
phenomenal. I worked about a dozen DX stations some as far out as the
middle east. Without NR I wouldn't have heard them at all. I not
sure why we have had such different experiences. I didn't have a hard time
finding a NR setting that worked. On occasion I would hear some band noise
but most of the time it virtually went away with the NR on. I use a full
size 160m dipole up about 70'. It's the same antenna I used with the
K2s. Perhaps if you were using a vertical, the noise was more severe
or just different.
Roger, W1EM From: [hidden email] [mailto:[hidden email]] On Behalf Of Lee Trout Sent: Sunday, December 07, 2008 5:51 PM To: [hidden email] Subject: [Elecraft] Musings on Noise Reduction The N/R is my only major complaint about the K3. I hope a firmware fix soon. 73 all, Lee (K9CM) _______________________________________________ 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 |
Re: Musings on Noise Reduction
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It might be instructive to compare what AGC
settings in the configuration menu Roger and Lee are using. Might this be
involved in the drastically different subjective experiences
reported?
Bill W5WVO
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It might also be interesting to see whether NR can be made to be useful
for SSB.
Dick, KA1SA At 09:05 PM 12/7/2008, Bill W5WVO wrote: It might be instructive to compare what AGC settings in the configuration menu Roger and Lee are using. Might this be involved in the drastically different subjective experiences reported? _______________________________________________ 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 started this thread and I have been watching the replies with interest. Dick's question about AGC settings piqued my interest and I did some additional research. First, Lyle Johnson's message here: http://n2.nabble.com/K3-AGC-Settings-Tutorial-td681120.html#a681120 does much to explain the AGC settings. Then, Fred KT5X's message here: http://n2.nabble.com/K3-AGC-settings-td395668.html#a395668 provided the inspiration to put the AGC configuration settings on the PF1 and PF2 buttons. Armed with this information, I spent an hour or so experimenting with AGC and Noise Reduction. I am pleased to say that I found a combination that has vastly improved my NR experience. The noise reduction is now working pretty darn well with a setting of F3-2. I won't go as far as to say its as good as the K2's (yet) but it's getting there. I urge you to do your own experimentation, but here are the settings I landed on: AGC THR = 7 AGC SLP = 12 AGC F = 100 Thanks, good luck, and please let me know if you come up with settings that work for you. 73, John, WA6L
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RE: Musings on Noise Reduction
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In reply to this post by Bill VanAlstyne W5WVO
From: Bill W5WVO [mailto:[hidden email]] Sent: Sunday, December 07, 2008 9:06 PM To: Roger Marrotte; 'Lee Trout' Cc: [hidden email] Subject: Re: [Elecraft] Musings on Noise Reduction It might be instructive to compare what AGC
settings in the configuration menu Roger and Lee are using. Might this be
involved in the drastically different subjective experiences
reported?
Bill W5WVO
_______________________________________________ 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 WA6L
Yes, adjusting the AGC Threshold made a significant difference in NR for me on CW. I was using 3 or 4 and now use 5 or 6. NR is not appropriate or helpful in all occasions but I use it more than before.
thanks! Gary W7TEA <quote author="WA6L"> I started this thread and I have been watching the replies with interest. Dick's question about AGC settings piqued my interest and I did some additional research. First, Lyle Johnson's message here: http://n2.nabble.com/K3-AGC-Settings-Tutorial-td681120.html#a681120 does much to explain the AGC settings. Then, Fred KT5X's message here: http://n2.nabble.com/K3-AGC-settings-td395668.html#a395668 provided the inspiration to put the AGC configuration settings on the PF1 and PF2 buttons. Armed with this information, I spent an hour or so experimenting with AGC and Noise Reduction. I am pleased to say that I found a combination that has vastly improved my NR experience. The noise reduction is now working pretty darn well with a setting of F3-2. I won't go as far as to say its as good as the K2's (yet) but it's getting there. I urge you to do your own experimentation, but here are the settings I landed on: AGC THR = 7 AGC SLP = 12 AGC F = 100 Thanks, good luck, and please let me know if you come up with settings that work for you. 73, John, WA6L
73,
Gary W7TEA K3 #1001, #5763 |
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