Re: [Elecraft] K3 SSB filters
You said: "In addition, when the DSP IF filters are set to about the same width as the roofing filters, the two filters "cascade" -- the rejection of adjacent signals is the sum of the rejection of the two filters. " There is no requirement that the widths be about the same. They could be widely different. If one passes an interfering signal with no attenuation and the other has 100 dB rejection then the sum is 0 + 100 = 100. Either could be first in the lineup. If the K3 second mixer was stronger, hardware AGC might not be necessary and the only need for a "roofing" filter would be to eliminate the image. A single 10-12 kHz filter would suffice and DSP would be the final filter. Sounds like a K4HD doesn't it? On 4/1/2020 10:23 AM, Jim Brown wrote: On 4/1/2020 7:17 AM, Wes wrote: Until you get down to the noise floor isn't it always the sum (in dB) of the rejection? Isn't that what I said? Perhaps I said it badly. 73, Jim __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
On 4/1/2020 7:17 AM, Wes wrote: Until you get down to the noise floor isn't it always the sum (in dB) of the rejection? Isn't that what I said? Perhaps I said it badly. 73, Jim __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
Until you get down to the noise floor isn't it always the sum (in dB) of the rejection? Wes N7WS On 3/31/2020 8:52 PM, Jim Brown wrote: On 3/31/2020 8:36 PM, Don Wilhelm wrote: What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within the roofing filter passband. In addition, when the DSP IF filters are set to about the same width as the roofing filters, the two filters "cascade" -- the rejection of adjacent signals is the sum of the rejection of the two filters. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
John, I concur. When I am running them especially on 20M I find I have the LO Cut at .35 and the HI Cut at 2.25-2.35. Audio is good. Below 2.25 if the calling station is a little off freq or has terrible audio I may waste time trying to get the call. N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: Wednesday, April 1, 2020 7:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 SSB Filters I concur. I have 2.8, 2.1 and 1.8 KHz 8 pole roofing filters in my K3S. I made over 8500 SSB QSOs last month and I used the 2.1 KHz roofing filter for all of them. John KK9A Jim Brown K9YC wrote: I tried that and didn't like the result. I prefer 2.1 kHz 8 pole 73, Jim K9YC __ 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 Message delivered to tony@verizon.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
I concur. I have 2.8, 2.1 and 1.8 KHz 8 pole roofing filters in my K3S. I made over 8500 SSB QSOs last month and I used the 2.1 KHz roofing filter for all of them. John KK9A Jim Brown K9YC wrote: I tried that and didn't like the result. I prefer 2.1 kHz 8 pole 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
No, the roofing filters aren't superfluous even with lower level signals. If you set the bandwidths similarly as I do all of the time, the rejection of the filter adds to the rejection from the DSP. I think this should be pretty obvious. Dave AB7E On 3/31/2020 8:36 PM, Don Wilhelm wrote: Hopefully that we will remember that the DSP filter skirts are steeper than the crystal filter skirts, so judicious use of the HiCut and LoCut will provide us with a better passband than narrow roofing filters. What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within the roofing filter passband. It takes adjacent signals in excess of S-9 +30 for the adjacent signal to activate the hardware AGC (which protects the front end DAC from overload). If the interfering station does not exceed that threshold, then the DSP filters will take care of it, and the need for more narrow roofing filters is superfluous. 73, Don W3FPR __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
On 3/31/2020 8:36 PM, Don Wilhelm wrote: What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within the roofing filter passband. In addition, when the DSP IF filters are set to about the same width as the roofing filters, the two filters "cascade" -- the rejection of adjacent signals is the sum of the rejection of the two filters. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
Hopefully that we will remember that the DSP filter skirts are steeper than the crystal filter skirts, so judicious use of the HiCut and LoCut will provide us with a better passband than narrow roofing filters. What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within the roofing filter passband. It takes adjacent signals in excess of S-9 +30 for the adjacent signal to activate the hardware AGC (which protects the front end DAC from overload). If the interfering station does not exceed that threshold, then the DSP filters will take care of it, and the need for more narrow roofing filters is superfluous. 73, Don W3FPR On 3/31/2020 8:57 PM, Bob McGraw K4TAX wrote: Remember, different brands of 2.1 or 1.8 filters are not necessarily equal. One must realize the shape factor is more important than the published BW. Just because one radio filter is 1.8 kHz does not mean another 1.8 kHz BW is the same. Bob, K4TAX Sent from my iPhone On Mar 31, 2020, at 7:02 PM, Nate Bargmann wrote: I typically use Hi Cut the most, Lo Cut once in a while and almost never use Width in SSB mode. For me the 2.1 kHz filter works swell in this application. In the late '90s I bought a TS-850s which was fitted with a 1.8 kHz factory accessory filter. I couldn't get rid of it fast enough and outfitted the radio with Inrad 2.1 kHz filters. They were far more pleasing to me. 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 __ 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 Message delivered to rmcg...@blomand.net __ 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 Message delivered to donw...@embarqmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
Remember, different brands of 2.1 or 1.8 filters are not necessarily equal. One must realize the shape factor is more important than the published BW. Just because one radio filter is 1.8 kHz does not mean another 1.8 kHz BW is the same. Bob, K4TAX Sent from my iPhone > On Mar 31, 2020, at 7:02 PM, Nate Bargmann wrote: > > I typically use Hi Cut the most, Lo Cut once in a while and almost never > use Width in SSB mode. For me the 2.1 kHz filter works swell in this > application. > > In the late '90s I bought a TS-850s which was fitted with a 1.8 kHz > factory accessory filter. I couldn't get rid of it fast enough and > outfitted the radio with Inrad 2.1 kHz filters. They were far more > pleasing to me. > > 73, Nate, N0NB > > -- > > "The optimist proclaims that we live in the best of all > possible worlds. The pessimist fears this is true." > > Web: https://www.n0nb.us > Projects: https://github.com/N0NB > GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 > > __ > 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 > Message delivered to rmcg...@blomand.net > __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
I typically use Hi Cut the most, Lo Cut once in a while and almost never use Width in SSB mode. For me the 2.1 kHz filter works swell in this application. In the late '90s I bought a TS-850s which was fitted with a 1.8 kHz factory accessory filter. I couldn't get rid of it fast enough and outfitted the radio with Inrad 2.1 kHz filters. They were far more pleasing to me. 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
Having the 1.8 kHz in my K3S, I know what and how it works. I work 2 SSB traffic LSB nets which both have LSB nets which are 2 kHZ above my net frequency. That means at least 700 Hz to 1000 Hz of their primary signal is in my receiver passband. The 1.8 kHz filter, the DSP at 1.8 kHz and using SHIFT handles the issues nicely. Bob, K4TAX Sent from my iPhone > On Mar 31, 2020, at 5:33 PM, Buck wrote: > > Why go halfway? I would go with the 1.8 as a roofing filter. Crank the DSP > down to 1.6 and slew the passband to get the best readability. > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > >> On 3/31/2020 12:17 PM, John Simmons wrote: >> David, >> I'm looking to upgrade my filters for SSB. I have the 2.8 filter installed, >> which has steeper skirts than the 2.7. I'm wondering if the 2.1 would have a >> noticeable enough effect to justify the cost. >> -de John NI0K >> David Smith wrote on 3/31/2020 10:26 AM: >>> Been interesting reading the comments on SSB contesting and filtering. As >>> a serious SSB contester from way back in the 80s, side rejection from other >>> contesters (especially where we are all bunched up on 40 meters and also >>> when the shortwave broadcast stations come on) has always been a topic of >>> conversation with my fellow ssb ops -- which radio to buy, which filter to >>> use, dsp, etc. >>> I have the 2.1 khz, 8 pole roofing filter installed in by my K3s BTW. With >>> that said, I think the bleeding over QRM from other ssb stations >>> (especially on 40 meters) is just the “nature of the beast” with ssb >>> contesting. And boy is it a killer on the ears during and after a contest >>> Anxious to hear other comments from other. >>> >>> David ND4Y >>> >>> >>> Sent from Mail for Windows 10 >>> >>> __ >>> 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 >>> Message delivered to jasimm...@pinewooddata.com >> __ >> 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 >> Message delivered to radiok...@gmail.com > __ > 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 > Message delivered to rmcg...@blomand.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
On 3/31/2020 3:18 PM, Buck wrote: Why go halfway? I would go with the 1.8 as a roofing filter. I tried that and didn't like the result. I prefer 2.1 kHz 8 pole 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
Why go halfway? I would go with the 1.8 as a roofing filter. Crank the DSP down to 1.6 and slew the passband to get the best readability. Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 3/31/2020 12:17 PM, John Simmons wrote: David, I'm looking to upgrade my filters for SSB. I have the 2.8 filter installed, which has steeper skirts than the 2.7. I'm wondering if the 2.1 would have a noticeable enough effect to justify the cost. -de John NI0K David Smith wrote on 3/31/2020 10:26 AM: Been interesting reading the comments on SSB contesting and filtering. As a serious SSB contester from way back in the 80s, side rejection from other contesters (especially where we are all bunched up on 40 meters and also when the shortwave broadcast stations come on) has always been a topic of conversation with my fellow ssb ops -- which radio to buy, which filter to use, dsp, etc. I have the 2.1 khz, 8 pole roofing filter installed in by my K3s BTW. With that said, I think the bleeding over QRM from other ssb stations (especially on 40 meters) is just the “nature of the beast” with ssb contesting. And boy is it a killer on the ears during and after a contest Anxious to hear other comments from other. David ND4Y Sent from Mail for Windows 10 __ 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 Message delivered to jasimm...@pinewooddata.com __ 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 Message delivered to radiok...@gmail.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB Filters
David, I'm looking to upgrade my filters for SSB. I have the 2.8 filter installed, which has steeper skirts than the 2.7. I'm wondering if the 2.1 would have a noticeable enough effect to justify the cost. -de John NI0K David Smith wrote on 3/31/2020 10:26 AM: Been interesting reading the comments on SSB contesting and filtering. As a serious SSB contester from way back in the 80s, side rejection from other contesters (especially where we are all bunched up on 40 meters and also when the shortwave broadcast stations come on) has always been a topic of conversation with my fellow ssb ops -- which radio to buy, which filter to use, dsp, etc. I have the 2.1 khz, 8 pole roofing filter installed in by my K3s BTW. With that said, I think the bleeding over QRM from other ssb stations (especially on 40 meters) is just the “nature of the beast” with ssb contesting. And boy is it a killer on the ears during and after a contest Anxious to hear other comments from other. David ND4Y Sent from Mail for Windows 10 __ 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 Message delivered to jasimm...@pinewooddata.com __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 SSB Filters
Been interesting reading the comments on SSB contesting and filtering. As a serious SSB contester from way back in the 80s, side rejection from other contesters (especially where we are all bunched up on 40 meters and also when the shortwave broadcast stations come on) has always been a topic of conversation with my fellow ssb ops -- which radio to buy, which filter to use, dsp, etc. I have the 2.1 khz, 8 pole roofing filter installed in by my K3s BTW. With that said, I think the bleeding over QRM from other ssb stations (especially on 40 meters) is just the “nature of the beast” with ssb contesting. And boy is it a killer on the ears during and after a contest Anxious to hear other comments from other. David ND4Y Sent from Mail for Windows 10 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
I have, in my K3S, the standard 2.7 kHz filter for transmit and often use the 1.8 kHz filter for receive to deal with QRM. It is necessary to adjust the SHIFT in order to improve copy when the 1.8 kHz filter is active. Yes, this is perfectly normal, the 1.8 kHz filter is not going to allow the audio to be Hi-Fi quality. That's the nature of "communications quality" audio. 73 Bob, K4TAX On 3/31/2020 10:00 AM, John Simmons wrote: With the recent experience in SSB contests, I'm thinking of upgrading my SSB filter(s). Currently for SSB I have only the 2.8 filter. What are thoughts about other SSB filters? I know when I narrow the bandwidth to 1.8 the intelligibility goes down. -de John NI0K __ 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 Message delivered to rmcg...@blomand.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 SSB filters
Hi John, There’s a nice writeup from Wayne and Eric here: https://elecraft.com/pages/k3s-crystal-roofing-filters Perhaps that will help. It certainly helped me. 73 de AG7TX David Thompson, AG7TX Jack of All Trades Master of None dbthomp...@me.com > On Mar 31, 2020, at 08:00, John Simmons wrote: > > With the recent experience in SSB contests, I'm thinking of upgrading my SSB > filter(s). Currently for SSB I have only the 2.8 filter. What are thoughts > about other SSB filters? I know when I narrow the bandwidth to 1.8 the > intelligibility goes down. > > -de John NI0K > __ > 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 > Message delivered to dbthomp...@me.com __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 SSB filters
With the recent experience in SSB contests, I'm thinking of upgrading my SSB filter(s). Currently for SSB I have only the 2.8 filter. What are thoughts about other SSB filters? I know when I narrow the bandwidth to 1.8 the intelligibility goes down. -de John NI0K __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 SSB filters
I've been reading the FAQ and the list archives trying to find out what SSB filters I could benefit from in my K3, which is due to come any day now! :) I've read some references that seem to suggest the 1.0 filter for SSB might be a bit on the narrow side. I'm a 95% cw op, so I got the 500 and 250 filters for CW, but I'll be taking the K3 to KH6 for the ARRL DX SSB contest, and since I'm not much of a phone op, I'm looking for feedback from other SSB contesters on what filters they've had success with in the K3. I don't yet have the K3 so I'm not able to try the stock filter myself to make that judgement... My original plan was to just use the 2.7 stock filter, but now that I'm thinking about it, I'm wondering if I should get the 2.1 also? Not sure if there's enough difference to warrant that, or if it makes a good deal of difference. How suitable is the 2.7 filter for ssb contesting? Suggestions? Thanks, -Jeff N6GQ ___ 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 SSB filters
Since the filters are roofing filters, I'm thinking that you don't have to overboard. My guess is the 2.7 is very good for contesting as it is. For CW, it's wide, but for SSB, as a roofing filter, I'd actually call it pretty narrow. But then again, I'm a CW guy. What do I know :-) - Keith N1AS - - K2 5411.ssb.100 - - K3 Wave 3 - -Original Message- I'm looking for feedback from other SSB contesters on what filters they've had success with in the K3. My original plan was to just use the 2.7 stock filter, ... wondering if I should get the 2.1 also? ___ 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
