K3 audio artifacts
Locked
 
|
I know I might be beating a dead horse, but my recent experience in big,
noisy pileups has made this problem stand out. The t/r transitions in QSK and semi-QSK CW when there are nearby strong signals make a horrible racket -- enough to make me turn down the volume when sending, which negates the utility of QSK, of course. Although the QSK is smooth and quiet on a quiet band, this is not the case when there are strong signals around. Here in 4X the EU signals can be super-strong, and in recent FT4TA pileups, the banging and crashing around my sidetone made operating sheer torture. Yes, I am using QRQ mode (I listen to the DX on the subrx and the pileup on the main so as to make this possible) and New QSK. It doesn't matter. The problem is as bad or worse in 'simplex' operation when numerous stations are calling a DX station on the same frequency. I understand that this is caused by the limitations of the synthesizers. But I have discussed with Wayne and Lyle the possibility of changing the RX muting function, which would slow down the QSK but at least make it quiet. Fast QSK is worthless if I have to turn down the audio to protect my eardrums! This would do a huge amount to increase the operating pleasure of serious CW operators. The feature could be optional so those who like to ragchew at high speed in QRM-free spots could turn it off. -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
I agree with Vic. QSK is sometimes painful.
CW Exuberantly, Hank, W6SX On Tue, Nov 18, 2014 at 4:27 AM, Vic Rosenthal 4X6GP/K2VCO < [hidden email]> wrote: > I know I might be beating a dead horse, but my recent experience in big, > noisy pileups has made this problem stand out. > > The t/r transitions in QSK and semi-QSK CW when there are nearby strong > signals make a horrible racket -- enough to make me turn down the volume > when sending, which negates the utility of QSK, of course. > > Although the QSK is smooth and quiet on a quiet band, this is not the case > when there are strong signals around. Here in 4X the EU signals can be > super-strong, and in recent FT4TA pileups, the banging and crashing around > my sidetone made operating sheer torture. > > Yes, I am using QRQ mode (I listen to the DX on the subrx and the pileup > on the main so as to make this possible) and New QSK. It doesn't matter. > > The problem is as bad or worse in 'simplex' operation when numerous > stations are calling a DX station on the same frequency. > > I understand that this is caused by the limitations of the synthesizers. > But I have discussed with Wayne and Lyle the possibility of changing the RX > muting function, which would slow down the QSK but at least make it quiet. > Fast QSK is worthless if I have to turn down the audio to protect my > eardrums! > > This would do a huge amount to increase the operating pleasure of serious > CW operators. The feature could be optional so those who like to ragchew at > high speed in QRM-free spots could turn it off. > -- > 73, > Vic, 4X6GP/K2VCO > Rehovot, Israel > http://www.qsl.net/k2vco/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Also agree, everyone brags so much on the K3 QSK that I thought it was
just a problem here. I have almost stopped using it because of the "junk" created when keying with any signals nearby. Merv K9FD/KH6 > I agree with Vic. QSK is sometimes painful. > > CW Exuberantly, > > Hank, W6SX > > > On Tue, Nov 18, 2014 at 4:27 AM, Vic Rosenthal 4X6GP/K2VCO < > [hidden email]> wrote: > >> I know I might be beating a dead horse, but my recent experience in big, >> noisy pileups has made this problem stand out. >> >> The t/r transitions in QSK and semi-QSK CW when there are nearby strong >> signals make a horrible racket -- enough to make me turn down the volume >> when sending, which negates the utility of QSK, of course. >> >> Although the QSK is smooth and quiet on a quiet band, this is not the case >> when there are strong signals around. Here in 4X the EU signals can be >> super-strong, and in recent FT4TA pileups, the banging and crashing around >> my sidetone made operating sheer torture. >> >> Yes, I am using QRQ mode (I listen to the DX on the subrx and the pileup >> on the main so as to make this possible) and New QSK. It doesn't matter. >> >> The problem is as bad or worse in 'simplex' operation when numerous >> stations are calling a DX station on the same frequency. >> >> I understand that this is caused by the limitations of the synthesizers. >> But I have discussed with Wayne and Lyle the possibility of changing the RX >> muting function, which would slow down the QSK but at least make it quiet. >> Fast QSK is worthless if I have to turn down the audio to protect my >> eardrums! >> >> This would do a huge amount to increase the operating pleasure of serious >> CW operators. The feature could be optional so those who like to ragchew at >> high speed in QRM-free spots could turn it off. >> -- >> 73, >> Vic, 4X6GP/K2VCO >> Rehovot, Israel >> http://www.qsl.net/k2vco/ >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Vic Rosenthal
Does it go away if you switch in some RF attenuation?
David G3UNA ----- Original Message ----- From: "Vic Rosenthal 4X6GP/K2VCO" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Sent: Tuesday, November 18, 2014 12:27 PM Subject: [Elecraft] K3 audio artifacts >I know I might be beating a dead horse, but my recent experience in big, > noisy pileups has made this problem stand out. > > The t/r transitions in QSK and semi-QSK CW when there are nearby strong > signals make a horrible racket -- enough to make me turn down the volume > when sending, which negates the utility of QSK, of course. > > Although the QSK is smooth and quiet on a quiet band, this is not the > case when there are strong signals around. Here in 4X the EU signals can > be super-strong, and in recent FT4TA pileups, the banging and crashing > around my sidetone made operating sheer torture. > > Yes, I am using QRQ mode (I listen to the DX on the subrx and the pileup > on the main so as to make this possible) and New QSK. It doesn't matter. > > The problem is as bad or worse in 'simplex' operation when numerous > stations are calling a DX station on the same frequency. > > I understand that this is caused by the limitations of the synthesizers. > But I have discussed with Wayne and Lyle the possibility of changing the > RX muting function, which would slow down the QSK but at least make it > quiet. Fast QSK is worthless if I have to turn down the audio to protect > my eardrums! > > This would do a huge amount to increase the operating pleasure of > serious CW operators. The feature could be optional so those who like to > ragchew at high speed in QRM-free spots could turn it off. > -- > 73, > Vic, 4X6GP/K2VCO > Rehovot, Israel > http://www.qsl.net/k2vco/ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Only if it's enough attenuation to reduce the volume significantly.
Several people suggested reduced RF gain. I tried this too, including turning off AGC and riding RF gain. The loudness of the 'crashes' seems to depend on the loudness of the signal. On 19 Nov 2014 10:39, David Cutter wrote: > Does it go away if you switch in some RF attenuation? > > David > G3UNA > > > ----- Original Message ----- From: "Vic Rosenthal 4X6GP/K2VCO" > <[hidden email]> > To: "Elecraft Reflector" <[hidden email]> > Sent: Tuesday, November 18, 2014 12:27 PM > Subject: [Elecraft] K3 audio artifacts > > >> I know I might be beating a dead horse, but my recent experience in >> big, noisy pileups has made this problem stand out. >> >> The t/r transitions in QSK and semi-QSK CW when there are nearby >> strong signals make a horrible racket -- enough to make me turn down >> the volume when sending, which negates the utility of QSK, of course. >> >> Although the QSK is smooth and quiet on a quiet band, this is not the >> case when there are strong signals around. Here in 4X the EU signals >> can be super-strong, and in recent FT4TA pileups, the banging and >> crashing around my sidetone made operating sheer torture. >> >> Yes, I am using QRQ mode (I listen to the DX on the subrx and the >> pileup on the main so as to make this possible) and New QSK. It >> doesn't matter. >> >> The problem is as bad or worse in 'simplex' operation when numerous >> stations are calling a DX station on the same frequency. >> >> I understand that this is caused by the limitations of the >> synthesizers. But I have discussed with Wayne and Lyle the possibility >> of changing the RX muting function, which would slow down the QSK but >> at least make it quiet. Fast QSK is worthless if I have to turn down >> the audio to protect my eardrums! >> >> This would do a huge amount to increase the operating pleasure of >> serious CW operators. The feature could be optional so those who like >> to ragchew at high speed in QRM-free spots could turn it off. >> -- >> 73, >> Vic, 4X6GP/K2VCO >> Rehovot, Israel >> http://www.qsl.net/k2vco/ -- Vic ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Hi Vic,
What roofing filter(s) do you have? 73, Jim K9YC On Wed,11/19/2014 2:43 AM, Vic Rosenthal wrote: > Only if it's enough attenuation to reduce the volume significantly. > Several people suggested reduced RF gain. I tried this too, including > turning off AGC and riding RF gain. The loudness of the 'crashes' > seems to depend on the loudness of the signal. > > On 19 Nov 2014 10:39, David Cutter wrote: >> Does it go away if you switch in some RF attenuation? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
400 Hz, 1.0 kHz and 2.8 kHz. Usually the 400 Hz is in use. Why?
On 19 Nov 2014 18:41, Jim Brown wrote: > Hi Vic, > > What roofing filter(s) do you have? > > 73, Jim K9YC > > On Wed,11/19/2014 2:43 AM, Vic Rosenthal wrote: >> Only if it's enough attenuation to reduce the volume significantly. >> Several people suggested reduced RF gain. I tried this too, including >> turning off AGC and riding RF gain. The loudness of the 'crashes' >> seems to depend on the loudness of the signal. >> >> On 19 Nov 2014 10:39, David Cutter wrote: >>> Does it go away if you switch in some RF attenuation? -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
On Wed,11/19/2014 9:21 AM, Vic Rosenthal 4X6GP/K2VCO wrote:
> 400 Hz, 1.0 kHz and 2.8 kHz. Usually the 400 Hz is in use. Why? I was wondering if what you are hearing is the result of overload of the DSP. I do most contesting with a Ten Tec Titan. Although it does very good QSK, I've also had the experience of vacuum relay failures during a contest, so when I'm using it, I don't use QSK. I do use QSK in 100W contests like NAQP, and I don't remember the sort of issue you describe. Of course, other signals are 15 dB weaker too. :) I have the 8-pole 250 Hz filter, and have it engaged most of the time for CW contesting. On the lower HF bands, I usually have the Atten engaged and the preamp off. On the higher bands, Atten is off and Preamp is usually on. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |