K3 Beta Firmware Release -- MCU Revision 2.19
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K3 Beta Firmware Release -- MCU Revision 2.19
 
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K3 beta-test firmware revision 2.19 is now available. Details appear
below and in the release notes. The use of beta-test firmware is encouraged, but optional. Please send any problem reports to [hidden email]. For instructions on how to obtain and load beta firmware, please see: http://www.elecraft.com/K3/k3_software.htm 73, Wayne N6KR * * * MCU 2.19 / DSP 1.87, 7-22-08 * AGC: Slope is now approximately linear in dB. Threshold moved about 10 dB lower, closely matching earlier DSP revisions. * USER INTERFACE: Minor clean-up of menu entry text and parameters, help text, error messages, etc., to make operation more intuitive. * SUB RX ON/OFF now has no effect on SPLIT, RIT, or XIT. * SUB RX SYNTHESIZER is no longer updated when sub RX is turned off, even with VFOs linked. This prevents an audio artifact when tuning. Also eliminated interaction between main and sub synthesizers during T-R switching that was causing keying artifacts at very specific frequencies on some bands. * IIR DSP FILTER ON/OFF SELECTION now applies to both main and sub receivers. (IIR filter on/off is selected by tapping the ‘7’ switch while in the FLx BW menu entry. IIR filters apply only to 100 Hz and narrower DSP bandwidths. They have slightly more ringing than the default FIR filters.) --- 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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Can you please explain what's been done to the AGC? I don't understand what the release note means. After I changed the slope to 15 I have been relatively happy with the AGC and not looking forward to dramatic changes in its behavior.
Knut - AB2TC <quote author="wayne burdick"> K3 beta-test firmware revision 2.19 is now available. Details appear below and in the release notes. The use of beta-test firmware is encouraged, but optional. Please send any problem reports to k3support@elecraft.com. For instructions on how to obtain and load beta firmware, please see: http://www.elecraft.com/K3/k3_software.htm 73, Wayne N6KR <snip> |
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> Can you please explain what's been done to the AGC? I don't understand what
> the release note means. After I changed the slope to 15 I have been > relatively happy with the AGC and not looking forward to dramatic changes in > its behavior. SLoPe=15 is still flat. You might want to change the THReshold - or not. I suggest you listen to it and adjust according to your preferences. 73, Lyle KK7P _______________________________________________ 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: K3 Beta Firmware Release -- MCU Revision 2.19
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In reply to this post by wayne burdick
Hi Buck,
This information didn't make it to the rev C manual. It will be in the next revision: * * * Narrow DSP Filter Types For bandwidth settings of 100 Hz or lower, the K3’s DSP normally uses a type of filter that minimizes ringing: the Finite Impulse Response or FIR filter. If you don’t mind a small amount of ringing, you can select Infinite Impulse Response or IIR filters for these bandwidths, which have steeper skirts. Locate the CONFIG:FLx BW menu entry, then tap 7 until you see IIR ON. Both main and sub receivers will use the same setting. * * * 73, Wayne N6KR On Jul 22, 2008, at 7:49 PM, [hidden email] wrote: > In a message dated 7/22/2008 8:37:37 P.M. Eastern Daylight Time, > [hidden email] writes: > * IIR DSP FILTER ON/OFF SELECTION now applies to both main and sub > receivers. (IIR filter on/off is selected by tapping the ‘7’ switch > while in the > FLx BW menu entry. IIR filters apply only to 100 Hz and narrower DSP > bandwidths. They have slightly more ringing than the default FIR > filters.) > > Can you explain more about this. I don't see a reference to IIR DSP > FILTER > in the manual. And, why would I want to chose a filter with slightly > more > ringing? > > k4ia > "Buck" K3 #101 > Fredericksburg, VA > > > > > **************Get fantasy football with free live scoring. Sign up for > FanHouse Fantasy Football today. > (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020) > > --- 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 |
Re: K3 Beta Firmware Release -- MCU Revision 2.19
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In reply to this post by wayne burdick
Mine came with what looks like the latest beta at the time of shipping (2.11, I
think). Anyway, it's certainly newer than the latest regular release. Is it recommended that I keep following the betas, or wait until one of the releases more recent than mine is declared "regular"? 73 LA4RT Jon wayne burdick wrote: > K3 beta-test firmware revision 2.19 is now available. Details appear > below and in the release notes. > > The use of beta-test firmware is encouraged, but optional. Please send > any problem reports to [hidden email]. For instructions on how > to obtain and load beta firmware, please see: > > http://www.elecraft.com/K3/k3_software.htm > > 73, > Wayne > N6KR > > * * * > > MCU 2.19 / DSP 1.87, 7-22-08 > > * AGC: Slope is now approximately linear in dB. Threshold > moved about 10 dB lower, closely matching earlier DSP revisions. > > * USER INTERFACE: Minor clean-up of menu entry text and parameters, > help text, error messages, etc., to make operation more intuitive. > > * SUB RX ON/OFF now has no effect on SPLIT, RIT, or XIT. > > * SUB RX SYNTHESIZER is no longer updated when sub RX is turned off, > even with VFOs linked. This prevents an audio artifact when tuning. Also > eliminated interaction between main and sub synthesizers during T-R > switching that was causing keying artifacts at very specific frequencies > on some bands. > > * IIR DSP FILTER ON/OFF SELECTION now applies to both main and sub > receivers. (IIR filter on/off is selected by tapping the ‘7’ switch > while in the > FLx BW menu entry. IIR filters apply only to 100 Hz and narrower DSP > bandwidths. They have slightly more ringing than the default FIR > filters.) > > > --- > > 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 _______________________________________________ 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: Re: K3 Beta Firmware Release -- MCU Revision 2.19
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In reply to this post by wayne burdick
On Tue, 2008-07-22 at 20:45 -0700, wayne burdick wrote:
> For bandwidth settings of 100 Hz or lower, the K3’s DSP normally uses a > type of filter that minimizes ringing: the Finite Impulse Response or > FIR filter. > > If you don’t mind a small amount of ringing, you can select Infinite > Impulse Response or IIR filters for these bandwidths, which have > steeper skirts. Locate the CONFIG:FLx BW menu entry, then tap 7 until > you see IIR ON. Both main and sub receivers will use the same setting. I would just like to add that in certain circumstances with signals buried in the noise this little bit of ringing can help the signal out of the muck. I find the IIR filters useful on 160m and I am glad the option is there. Choice is good ;-) 73 Brendan EI6IZ -- Don‘t complain. Nobody will understand. Or care. And certainly don‘t try to fix the situation yourself. It‘s dangerous. Leave it to a highly untrained, unqualified, expendable professional. _______________________________________________ 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: K3 Beta Firmware Release -- MCU Revision 2.19
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In reply to this post by Jon Kåre Hellan
Jon,
That is something you have to decide. You can judge the changes from the release notes for the Beta relaease and decide if it is important to you. There can be residual bugs in any Beta software - it has been tested by the K3 Firmware Test Team, and you can be assured that the most things do work fine, but that team just cannot test every nook and cranny, so there is always that lurking 'special combination' of events that might lead to a bug (and users are asked to report). If you choose not to load the Beta release, do not let your K3 lag too far behind the normal release of firmware. 73, Don W3FPR Jon K Hellan wrote: > Mine came with what looks like the latest beta at the time of shipping > (2.11, I think). Anyway, it's certainly newer than the latest regular > release. > > Is it recommended that I keep following the betas, or wait until one > of the releases more recent than mine is declared "regular"? > > 73 > LA4RT Jon > 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: K3 Beta Firmware Release -- MCU Revision 2.19
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Administrator
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In reply to this post by Jon Kåre Hellan
Hi Jon,
We suggest loading each new beta release as it comes out. 73, Wayne N6KR On Jul 23, 2008, at 2:00 AM, Jon K Hellan wrote: > Mine came with what looks like the latest beta at the time of shipping > (2.11, I think). Anyway, it's certainly newer than the latest regular > release. > > Is it recommended that I keep following the betas, or wait until one > of the releases more recent than mine is declared "regular"? > > 73 > LA4RT Jon --- 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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DSP firmware 1.87 corrects two AGC problems occasionally resulting in
complaints of unexpectedly loud signals in an operator's headphones. The first lowers the AGC threshold. It was inadvertently raised sometime after release 1.47. It is now back to its original range. The second corrects a problem in the AGC slope. As signals grew stronger, the AGC was not properly restricting their range, particularly for signals from about S9 to the activation of hardware AGC (about S9+5 or 10 in the earliest K3s; about S9+20 in later K3s and those with the HAGC mod). The new code sets the slope of the AGC as "linear in dB." This means that if you have it set for, say, 1 dB of output change for 10 dB of signal change, then an input signal change of 40 dB will result in about a 4 dB change in the audio level. The slope now ranges from essentially flat output (CONFIG:AGC SLP 15) to about 3.75 dB audio rise per 10 dB signal rise (CONFIG:AGC SLP 0). Each step is about 0.25 dB audio change per 10 dB of input signal change. You probably won't need to alter any AGC settings in your K3, but you may want to experiment with different values of CONFIG:AGC THR and CONFIG:AGC SLP. Remember, there is no "correct" setting; the K3 is designed to be tailored to your preferences. Enjoy! 73, Lyle KK7P _______________________________________________ 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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Lyle, can you describe what the Threshold value might be at a particular
numerical setting? For example, is AGC action initiated at about 5 uv with a setting of "3" and a setting of "2" might be at 1 uv. I'm still trying to understand how this works. It seems the Orion threshold setting worked in the opposite way--that is, lowering the threshold raised the signal level. Or maybe my memory is faulty. thanks, Gary W7TEA
73,
Gary W7TEA K3 #1001, #5763 |
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> Lyle, can you describe what the Threshold value might be at a particular
> numerical setting? For example, is AGC action initiated at about 5 uv > with a setting of "3" and a setting of "2" might be at 1 uv. AGC THR 2 is about -110 to -113 dBm or so. AGC THR 8 is around -100 dBm or so. (-107 dBm is 1 uV) 73, Lyle KK7P _______________________________________________ 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 |
K3 Beta Firmware Release -- MCU Revision 2.22
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In reply to this post by wayne burdick
Loaded latest Beta yesterday and it works well but when using internal memory to call CQ on CW the transmission is interrupted if/when I touch the DISP button. (When I tap the DISP button again transmission starts again from the point of interrupt). I cannot recall that happening with latest ordinary F/W, maybe I am wrong - anyway no big issue. Would like comments from anyone still using latest regular release. Thank you in advance Len SM7BIC _______________________________________________ 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: K3 Beta Firmware Release -- MCU Revision 2.22
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Lennart,
This problem has been reportedalready, and the same thing happens with the MENU button and SPEED/MIC and CMP/PWR. The problem wil be solved in the next future I think. 73 's Steef PA2A K3 #1184 ----- Original Message ----- From: "Lennart Michaëlsson" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Sent: Sunday, August 03, 2008 7:51 PM Subject: [Elecraft] K3 Beta Firmware Release -- MCU Revision 2.22 > > Loaded latest Beta yesterday and it works well but > when using internal memory to call CQ on CW the transmission is > interrupted > if/when I touch the DISP button. (When I tap the DISP button again > transmission starts again from the point of interrupt). > I cannot recall that happening with latest ordinary F/W, maybe I am > wrong - > anyway no big issue. Would like comments from anyone still using latest > regular release. > Thank you in advance > Len > SM7BIC > > _______________________________________________ > 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 Lennart Michaëlsson
Hi all,
Out of interest I thought I would try the new feature. I only have the 2.7kHz filter but people noticed the difference when I swtched. I did however get a ERR TXF message when I switch it on and TX. it transmits OK but gives the message. Anyone else seeing this? 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC DX Cluster Member RSGB, GQRP K2 #4044 |K3 #455 _______________________________________________ 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: K3 Beta Firmware Release -- MCU Revision 2.22
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You have to use the 6 KHz filter for TX on ESSB. You're TX is
probably restricted on audio bandwidth with the 2.7 filter. From hfnotes.rtf for 2.23: * ESSB (EXTENDED SINGLE SIDEBAND) ADDED: Allows the K3 to transmit in SSB modes at a bandwidth of up to about 4 kHz. Requires a 6 kHz crystal filter on the RF board. To use ESSB: (1) Make sure the 6 kHz filter is configured correctly for AM transmit; switch to AM mode, then specify this filter using CONFIG:FLTX AM. (2) Locate CONFIG:TX ESSB. Select the desired extended bandwidth for SSB ransmit (3.0 to 4.0 kHz) using VFO A. Then tap"1" on the keypad to turn ESSB on/off. When on, the "+" icon in the mode area will turn on. 73, matt, W6NIA On Sun, 03 Aug 2008 23:15:47 +0100, you wrote: >Hi all, >Out of interest I thought I would try the new feature. I only have the >2.7kHz filter but people noticed the difference when I swtched. I did >however get a ERR TXF message when I switch it on and TX. it transmits >OK but gives the message. Anyone else seeing this? > >73 Ian _______________________________________________ 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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