[Elecraft] K2 SSB TX audio question
K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports! So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy...so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much. As always, thanks for everyone's help! 73..ed k6sdw __ 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] K2 SSB TX audio question
Ed, Change 2 capacitors on the KSB2 board. C34 to 0.47 uF and C32 to something in the 3300 pF to 5000 pF range. I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone and it sounds good with those changes made. 73, Don W3FPR On 8/12/2013 6:18 PM, Eddy wrote: K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports! So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy...so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much. As always, thanks for everyone's help! 73..ed k6sdw __ 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 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] K2 SSB TX audio question
Don Changing those two caps changes the audio or band width of the signal? Thanks Gerald. On Aug 12, 2013 6:41 PM, Don Wilhelm w3...@embarqmail.com wrote: Ed, Change 2 capacitors on the KSB2 board. C34 to 0.47 uF and C32 to something in the 3300 pF to 5000 pF range. I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone and it sounds good with those changes made. 73, Don W3FPR On 8/12/2013 6:18 PM, Eddy wrote: K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports! So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy...so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much. As always, thanks for everyone's help! 73..ed k6sdw __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 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] K2 SSB TX audio question
The reason I ask is that I get reports of very narrow audio when monitored by someone with a band scope. They saw between 2 and 2.5 , where most everyone else runs 3 to 3.5 Thanks Gerald On Aug 12, 2013 6:41 PM, Don Wilhelm w3...@embarqmail.com wrote: Ed, Change 2 capacitors on the KSB2 board. C34 to 0.47 uF and C32 to something in the 3300 pF to 5000 pF range. I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone and it sounds good with those changes made. 73, Don W3FPR On 8/12/2013 6:18 PM, Eddy wrote: K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports! So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy...so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much. As always, thanks for everyone's help! 73..ed k6sdw __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 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] K2 SSB TX audio question
It reduces the low frequency energy getting to the speech compressor on the KSB2 board. 73, Don W3FPR On 8/12/2013 9:59 PM, Gerald Manthey wrote: Don Changing those two caps changes the audio or band width of the signal? Thanks Gerald. On Aug 12, 2013 6:41 PM, Don Wilhelm w3...@embarqmail.com wrote: Ed, Change 2 capacitors on the KSB2 board. C34 to 0.47 uF and C32 to something in the 3300 pF to 5000 pF range. I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone and it sounds good with those changes made. 73, Don W3FPR On 8/12/2013 6:18 PM, Eddy wrote: K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports! So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy...so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much. As always, thanks for everyone's help! 73..ed k6sdw __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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 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 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] K2 SSB TX audio question
That sounds like the BFOs for the OP1 filter in SSB FL1 are not aligned properly. See part 3 of the K2 Dial Calibration article on my website www.w3fpr.com 73, Don W3FPR On 8/12/2013 10:02 PM, Gerald Manthey wrote: The reason I ask is that I get reports of very narrow audio when monitored by someone with a band scope. They saw between 2 and 2.5 , where most everyone else runs 3 to 3.5 __ 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
