Re: [Elecraft] Possible phase noise question...
One issue that someone obliquely mentioned in the various replies that I feel requires greater emphasis, is that the SignaLink USB box is, first and foremost, a sound "card" and as such requires a great deal more current than a typical USB device and should be plugged into a *powered* USB hub. Granted, the power supplies for various powered USB hubs are likely to be noisy (from the perspective of us hams, anyway), and may need further treatment (chokes, bypass capacitors, etc.). But if your SignaLink USB is plugged directly into your laptop or desktop, know that it's drawing more current than the USB (<3.0) spec allows, and that may be a significant contributor to the noise problems being reported in this thread. 73 de N1HO __ 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] Possible phase noise question...
Hi Joe, The fellow is aware it is something on his end... I have been trying to pin it to something on my end, and just can't... We have known each other for years and are on good enough terms that we can talk about it with zero issues... He is pretty sure it is the sound card as well... We are just trying to devise tests to eliminate that. He as a second Signalink to test with, so that is the next step. He will get a powered USB hub shortly... More as I get it... -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Tue, 2014-07-01 at 10:34 -0400, Joe Subich, W4TV wrote: > While I hate to point fingers in this situation, the symptoms are > that of an unstable (noisy) sound card. Given the documentation > of insufficient filtering, regulation and bypassing in that > particular device, a noisy USB power line (remember the computer > power supplies are switchers with the potential for broadband > hash) would directly modulate the codec (DAC), and the op-amp > audio stages feeding the transmitter. > > 73, > > ... Joe, W4TV > > > On 2014-07-01 10:11 AM, David Cole wrote: > > Hi, > > > > We are starting to focus on the Signalink soundcard itself... I can't > > imagine it is the Elecraft K3 failing, as a dead carrier does not cause > > the spray, only when audio is being supplied to the transmitter, and > > only when from the Signalink, does the problem happen... > > > __ > 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 d...@nk7z.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] Possible phase noise question...
While I hate to point fingers in this situation, the symptoms are that of an unstable (noisy) sound card. Given the documentation of insufficient filtering, regulation and bypassing in that particular device, a noisy USB power line (remember the computer power supplies are switchers with the potential for broadband hash) would directly modulate the codec (DAC), and the op-amp audio stages feeding the transmitter. 73, ... Joe, W4TV On 2014-07-01 10:11 AM, David Cole wrote: Hi, We are starting to focus on the Signalink soundcard itself... I can't imagine it is the Elecraft K3 failing, as a dead carrier does not cause the spray, only when audio is being supplied to the transmitter, and only when from the Signalink, does the problem happen... __ 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] Possible phase noise question...
I am running JT65, the bandpass is on the order of 1 to 2 KHz, the signalink is spraying across at least 1 KHz. with wideband noise. -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Tue, 2014-07-01 at 16:17 +0200, Per-Tore Aasestrand wrote: > But why will not the K3 filters take care of any too wide signals > coming from the SignalLink? > . > > On 1 July 2014 16:11, David Cole wrote: > > Hi, > > > > We are starting to focus on the Signalink soundcard itself... I can't > > imagine it is the Elecraft K3 failing, as a dead carrier does not cause > > the spray, only when audio is being supplied to the transmitter, and > > only when from the Signalink, does the problem happen... > > > > -- > > Thanks and 73's, > > For equipment, and software setups and reviews see: > > www.nk7z.net > > for MixW support see; > > http://groups.yahoo.com/neo/groups/mixw/info > > for Dopplergram information see: > > http://groups.yahoo.com/neo/groups/dopplergram/info > > for MM-SSTV see: > > http://groups.yahoo.com/neo/groups/MM-SSTV/info > > > > > > On Tue, 2014-07-01 at 14:49 +0100, Ian White wrote: > >> > > >> >That indicates to me that your soundcard ADC is being overdriven, or > >> >that you have a bad soundcard. > >> > > >> >73, > >> >Don W3FPR > >> > > >> > >> The sound card could also be overdriven if another unrelated program has > >> changed the settings. > >> > >> > >> 73 from Ian GM3SEK > >> > >> > >> > >> > >> >-Original Message- > >> >On 7/1/2014 1:02 AM, David Cole wrote: > >> >> Here is a bit more info on the issue... > >> >> > >> >> If my friend moves his frequency just out of the radio passband, as > >> >> shown on the P3, the problem go away... The base noise level drops > >> back > >> >> down to normal... Only when his signal is within the passband as > >> shown > >> >> on the P3 does the base noise level rise... I also narrowed the > >> filter > >> >> down to eliminate his signal, and as soon as his signal movers out of > >> >> the pass band, the problem ends... > >> >> > >> >> Is it just that the K3 is not dealing with his signal levels? This > >> >> happens when he is running 5 Watts, and he is 1/2 mile from me... > >> >> > >> > > >> > > > > __ > > 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 p...@ieee.org __ 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] Possible phase noise question...
But why will not the K3 filters take care of any too wide signals coming from the SignalLink? . On 1 July 2014 16:11, David Cole wrote: > Hi, > > We are starting to focus on the Signalink soundcard itself... I can't > imagine it is the Elecraft K3 failing, as a dead carrier does not cause > the spray, only when audio is being supplied to the transmitter, and > only when from the Signalink, does the problem happen... > > -- > Thanks and 73's, > For equipment, and software setups and reviews see: > www.nk7z.net > for MixW support see; > http://groups.yahoo.com/neo/groups/mixw/info > for Dopplergram information see: > http://groups.yahoo.com/neo/groups/dopplergram/info > for MM-SSTV see: > http://groups.yahoo.com/neo/groups/MM-SSTV/info > > > On Tue, 2014-07-01 at 14:49 +0100, Ian White wrote: >> > >> >That indicates to me that your soundcard ADC is being overdriven, or >> >that you have a bad soundcard. >> > >> >73, >> >Don W3FPR >> > >> >> The sound card could also be overdriven if another unrelated program has >> changed the settings. >> >> >> 73 from Ian GM3SEK >> >> >> >> >> >-Original Message- >> >On 7/1/2014 1:02 AM, David Cole wrote: >> >> Here is a bit more info on the issue... >> >> >> >> If my friend moves his frequency just out of the radio passband, as >> >> shown on the P3, the problem go away... The base noise level drops >> back >> >> down to normal... Only when his signal is within the passband as >> shown >> >> on the P3 does the base noise level rise... I also narrowed the >> filter >> >> down to eliminate his signal, and as soon as his signal movers out of >> >> the pass band, the problem ends... >> >> >> >> Is it just that the K3 is not dealing with his signal levels? This >> >> happens when he is running 5 Watts, and he is 1/2 mile from me... >> >> >> > >> > > __ > 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 p...@ieee.org __ 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] Possible phase noise question...
Hi, We are starting to focus on the Signalink soundcard itself... I can't imagine it is the Elecraft K3 failing, as a dead carrier does not cause the spray, only when audio is being supplied to the transmitter, and only when from the Signalink, does the problem happen... -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Tue, 2014-07-01 at 14:49 +0100, Ian White wrote: > > > >That indicates to me that your soundcard ADC is being overdriven, or > >that you have a bad soundcard. > > > >73, > >Don W3FPR > > > > The sound card could also be overdriven if another unrelated program has > changed the settings. > > > 73 from Ian GM3SEK > > > > > >-Original Message- > >On 7/1/2014 1:02 AM, David Cole wrote: > >> Here is a bit more info on the issue... > >> > >> If my friend moves his frequency just out of the radio passband, as > >> shown on the P3, the problem go away... The base noise level drops > back > >> down to normal... Only when his signal is within the passband as > shown > >> on the P3 does the base noise level rise... I also narrowed the > filter > >> down to eliminate his signal, and as soon as his signal movers out of > >> the pass band, the problem ends... > >> > >> Is it just that the K3 is not dealing with his signal levels? This > >> happens when he is running 5 Watts, and he is 1/2 mile from me... > >> > > > __ 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] Possible phase noise question...
> >That indicates to me that your soundcard ADC is being overdriven, or >that you have a bad soundcard. > >73, >Don W3FPR > The sound card could also be overdriven if another unrelated program has changed the settings. 73 from Ian GM3SEK >-Original Message- >On 7/1/2014 1:02 AM, David Cole wrote: >> Here is a bit more info on the issue... >> >> If my friend moves his frequency just out of the radio passband, as >> shown on the P3, the problem go away... The base noise level drops back >> down to normal... Only when his signal is within the passband as shown >> on the P3 does the base noise level rise... I also narrowed the filter >> down to eliminate his signal, and as soon as his signal movers out of >> the pass band, the problem ends... >> >> Is it just that the K3 is not dealing with his signal levels? This >> happens when he is running 5 Watts, and he is 1/2 mile from me... >> > __ 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] Possible phase noise question...
That indicates to me that your soundcard ADC is being overdriven, or that you have a bad soundcard. 73, Don W3FPR On 7/1/2014 1:02 AM, David Cole wrote: Here is a bit more info on the issue... If my friend moves his frequency just out of the radio passband, as shown on the P3, the problem go away... The base noise level drops back down to normal... Only when his signal is within the passband as shown on the P3 does the base noise level rise... I also narrowed the filter down to eliminate his signal, and as soon as his signal movers out of the pass band, the problem ends... Is it just that the K3 is not dealing with his signal levels? This happens when he is running 5 Watts, and he is 1/2 mile from me... __ 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] Possible phase noise question...
Here is a bit more info on the issue... If my friend moves his frequency just out of the radio passband, as shown on the P3, the problem go away... The base noise level drops back down to normal... Only when his signal is within the passband as shown on the P3 does the base noise level rise... I also narrowed the filter down to eliminate his signal, and as soon as his signal movers out of the pass band, the problem ends... Is it just that the K3 is not dealing with his signal levels? This happens when he is running 5 Watts, and he is 1/2 mile from me... -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Mon, 2014-06-30 at 13:39 -0700, Phil Wheeler wrote: > No. Can you swap to a different Signalink USB? > > Phil W7OX > > On 6/30/14, 12:45 PM, David Cole wrote: > > Hi, > > I have a friend who lives about 1/2 to 3/4 of a mile from me. He is > > running a 706 MK2G, at around 10 watts. > > > > In the past, while using a Pro III, when he came on, I was able to copy > > and see signals using JT65, and work stations right next to him. > > > > After getting the K3, I believe I was able to do this as well, or > > better... Suddenly his signal is sprayed across the entire audio > > spectrum to the point, I can't even tell what frequency he is on... > > > > I get a solid white block using WSJTx. He and I enlisted a third > > friend, to insure it was not just me that is seeing him as very wide. > > The third friend lives about 4 to 5 miles from both of us, and is line > > of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, > > I see the spray, but my friend does not... He sees a nice tight signal. > > It looks and sounds like phase noise... However... > > > > If he just does a Key down for CW at 50 watts, I can copy stations right > > next to him... It is as if his sound card, (Signal Link with internal > > sound card), is adding a low level hiss to the audio, I see it due to > > proximity, and my friend does not again, because he is much further > > away... > > > > This has started suddenly, and the owner of the 706 can not pin a change > > to it... We swapped in a different 706MK2G, and the same problem still > > happens... > > > > Has anyone heard of this happening with a SignalLink sound card before? > > > > > > __ > 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 d...@nk7z.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] Possible phase noise question...
If fact, the circuitry for that very nice "homebrew" solution is for VOX. If you have a modern radio like the K2/KX3/K3, it most probably has a VOX circuit already built in, so the "melting solder" part reduces to simply putting the right connectors on the end of some cables. 73, Matt VK2RQ > On 1 Jul 2014, at 9:04 am, "Joe Subich, W4TV" wrote: > > > > Has anyone heard of this happening with a SignalLink sound card > > before? > > Yes. Did your friend change computers, connect Signalink to a > different port, add (or remove) an externally powered hub? > > Signalink has documented design issues - it lacks the V/2 regulator > for the codec as recommended by the chip vendor, has a severe lack > of bypasses on the 5V bus, insufficient filtering on the USB power > (which becomes the 5V bus) and no regulation. If the computer's USB > power becomes noisy/unstable, that noise is imposed directly on the > audio output of the codec *and* is further modulated on the audio > via bias to the op-amp audio stages. > > See documentation of the defects (and modifications to fix some of > the shortcomings - including schematics) here: > http://www.frenning.dk/OZ1PIF_HOMEPAGE/SignaLinkUSB-mods.html > > If one wants a higher performance interface at a lower cost that > will do everything that a Signalink will do and is willing to melt > a little solder see: http://www.g4ilo.com/usblink.html > > 73, > > ... Joe, W4TV > > >> On 2014-06-30 3:45 PM, David Cole wrote: >> Hi, >> I have a friend who lives about 1/2 to 3/4 of a mile from me. He is >> running a 706 MK2G, at around 10 watts. >> >> In the past, while using a Pro III, when he came on, I was able to copy >> and see signals using JT65, and work stations right next to him. >> >> After getting the K3, I believe I was able to do this as well, or >> better... Suddenly his signal is sprayed across the entire audio >> spectrum to the point, I can't even tell what frequency he is on... >> >> I get a solid white block using WSJTx. He and I enlisted a third >> friend, to insure it was not just me that is seeing him as very wide. >> The third friend lives about 4 to 5 miles from both of us, and is line >> of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, >> I see the spray, but my friend does not... He sees a nice tight signal. >> It looks and sounds like phase noise... However... >> >> If he just does a Key down for CW at 50 watts, I can copy stations right >> next to him... It is as if his sound card, (Signal Link with internal >> sound card), is adding a low level hiss to the audio, I see it due to >> proximity, and my friend does not again, because he is much further >> away... >> >> This has started suddenly, and the owner of the 706 can not pin a change >> to it... We swapped in a different 706MK2G, and the same problem still >> happens... >> >> Has anyone heard of this happening with a SignalLink sound card before? > __ > 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 matt.vk...@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] Possible phase noise question...
Joe, Thank you so very much, yes he did change computers... :) Also, the additional information will help in solving this... I'll pass all of this on to him! Joe, you are a bottomless pit of handy things to know, thank you again! -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Mon, 2014-06-30 at 19:04 -0400, Joe Subich, W4TV wrote: > > Has anyone heard of this happening with a SignalLink sound card > > before? > > Yes. Did your friend change computers, connect Signalink to a > different port, add (or remove) an externally powered hub? > > Signalink has documented design issues - it lacks the V/2 regulator > for the codec as recommended by the chip vendor, has a severe lack > of bypasses on the 5V bus, insufficient filtering on the USB power > (which becomes the 5V bus) and no regulation. If the computer's USB > power becomes noisy/unstable, that noise is imposed directly on the > audio output of the codec *and* is further modulated on the audio > via bias to the op-amp audio stages. > > See documentation of the defects (and modifications to fix some of > the shortcomings - including schematics) here: > http://www.frenning.dk/OZ1PIF_HOMEPAGE/SignaLinkUSB-mods.html > > If one wants a higher performance interface at a lower cost that > will do everything that a Signalink will do and is willing to melt > a little solder see: http://www.g4ilo.com/usblink.html > > 73, > > ... Joe, W4TV > > > On 2014-06-30 3:45 PM, David Cole wrote: > > Hi, > > I have a friend who lives about 1/2 to 3/4 of a mile from me. He is > > running a 706 MK2G, at around 10 watts. > > > > In the past, while using a Pro III, when he came on, I was able to copy > > and see signals using JT65, and work stations right next to him. > > > > After getting the K3, I believe I was able to do this as well, or > > better... Suddenly his signal is sprayed across the entire audio > > spectrum to the point, I can't even tell what frequency he is on... > > > > I get a solid white block using WSJTx. He and I enlisted a third > > friend, to insure it was not just me that is seeing him as very wide. > > The third friend lives about 4 to 5 miles from both of us, and is line > > of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, > > I see the spray, but my friend does not... He sees a nice tight signal. > > It looks and sounds like phase noise... However... > > > > If he just does a Key down for CW at 50 watts, I can copy stations right > > next to him... It is as if his sound card, (Signal Link with internal > > sound card), is adding a low level hiss to the audio, I see it due to > > proximity, and my friend does not again, because he is much further > > away... > > > > This has started suddenly, and the owner of the 706 can not pin a change > > to it... We swapped in a different 706MK2G, and the same problem still > > happens... > > > > Has anyone heard of this happening with a SignalLink sound card before? > > > > __ 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] Possible phase noise question...
> Has anyone heard of this happening with a SignalLink sound card > before? Yes. Did your friend change computers, connect Signalink to a different port, add (or remove) an externally powered hub? Signalink has documented design issues - it lacks the V/2 regulator for the codec as recommended by the chip vendor, has a severe lack of bypasses on the 5V bus, insufficient filtering on the USB power (which becomes the 5V bus) and no regulation. If the computer's USB power becomes noisy/unstable, that noise is imposed directly on the audio output of the codec *and* is further modulated on the audio via bias to the op-amp audio stages. See documentation of the defects (and modifications to fix some of the shortcomings - including schematics) here: http://www.frenning.dk/OZ1PIF_HOMEPAGE/SignaLinkUSB-mods.html If one wants a higher performance interface at a lower cost that will do everything that a Signalink will do and is willing to melt a little solder see: http://www.g4ilo.com/usblink.html 73, ... Joe, W4TV On 2014-06-30 3:45 PM, David Cole wrote: Hi, I have a friend who lives about 1/2 to 3/4 of a mile from me. He is running a 706 MK2G, at around 10 watts. In the past, while using a Pro III, when he came on, I was able to copy and see signals using JT65, and work stations right next to him. After getting the K3, I believe I was able to do this as well, or better... Suddenly his signal is sprayed across the entire audio spectrum to the point, I can't even tell what frequency he is on... I get a solid white block using WSJTx. He and I enlisted a third friend, to insure it was not just me that is seeing him as very wide. The third friend lives about 4 to 5 miles from both of us, and is line of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, I see the spray, but my friend does not... He sees a nice tight signal. It looks and sounds like phase noise... However... If he just does a Key down for CW at 50 watts, I can copy stations right next to him... It is as if his sound card, (Signal Link with internal sound card), is adding a low level hiss to the audio, I see it due to proximity, and my friend does not again, because he is much further away... This has started suddenly, and the owner of the 706 can not pin a change to it... We swapped in a different 706MK2G, and the same problem still happens... Has anyone heard of this happening with a SignalLink sound card before? __ 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] Possible phase noise question...
I might be able too... I have a 4th friend with one! :) -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Mon, 2014-06-30 at 13:39 -0700, Phil Wheeler wrote: > No. Can you swap to a different Signalink USB? > > Phil W7OX > > On 6/30/14, 12:45 PM, David Cole wrote: > > Hi, > > I have a friend who lives about 1/2 to 3/4 of a mile from me. He is > > running a 706 MK2G, at around 10 watts. > > > > In the past, while using a Pro III, when he came on, I was able to copy > > and see signals using JT65, and work stations right next to him. > > > > After getting the K3, I believe I was able to do this as well, or > > better... Suddenly his signal is sprayed across the entire audio > > spectrum to the point, I can't even tell what frequency he is on... > > > > I get a solid white block using WSJTx. He and I enlisted a third > > friend, to insure it was not just me that is seeing him as very wide. > > The third friend lives about 4 to 5 miles from both of us, and is line > > of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, > > I see the spray, but my friend does not... He sees a nice tight signal. > > It looks and sounds like phase noise... However... > > > > If he just does a Key down for CW at 50 watts, I can copy stations right > > next to him... It is as if his sound card, (Signal Link with internal > > sound card), is adding a low level hiss to the audio, I see it due to > > proximity, and my friend does not again, because he is much further > > away... > > > > This has started suddenly, and the owner of the 706 can not pin a change > > to it... We swapped in a different 706MK2G, and the same problem still > > happens... > > > > Has anyone heard of this happening with a SignalLink sound card before? > > > > > > __ > 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 d...@nk7z.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] Possible phase noise question...
No. Can you swap to a different Signalink USB? Phil W7OX On 6/30/14, 12:45 PM, David Cole wrote: Hi, I have a friend who lives about 1/2 to 3/4 of a mile from me. He is running a 706 MK2G, at around 10 watts. In the past, while using a Pro III, when he came on, I was able to copy and see signals using JT65, and work stations right next to him. After getting the K3, I believe I was able to do this as well, or better... Suddenly his signal is sprayed across the entire audio spectrum to the point, I can't even tell what frequency he is on... I get a solid white block using WSJTx. He and I enlisted a third friend, to insure it was not just me that is seeing him as very wide. The third friend lives about 4 to 5 miles from both of us, and is line of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, I see the spray, but my friend does not... He sees a nice tight signal. It looks and sounds like phase noise... However... If he just does a Key down for CW at 50 watts, I can copy stations right next to him... It is as if his sound card, (Signal Link with internal sound card), is adding a low level hiss to the audio, I see it due to proximity, and my friend does not again, because he is much further away... This has started suddenly, and the owner of the 706 can not pin a change to it... We swapped in a different 706MK2G, and the same problem still happens... Has anyone heard of this happening with a SignalLink sound card before? __ 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] Possible phase noise question...
Hi, I have a friend who lives about 1/2 to 3/4 of a mile from me. He is running a 706 MK2G, at around 10 watts. In the past, while using a Pro III, when he came on, I was able to copy and see signals using JT65, and work stations right next to him. After getting the K3, I believe I was able to do this as well, or better... Suddenly his signal is sprayed across the entire audio spectrum to the point, I can't even tell what frequency he is on... I get a solid white block using WSJTx. He and I enlisted a third friend, to insure it was not just me that is seeing him as very wide. The third friend lives about 4 to 5 miles from both of us, and is line of site to my friend with teh 706 MK2G. When the 706 MK2G lets loose, I see the spray, but my friend does not... He sees a nice tight signal. It looks and sounds like phase noise... However... If he just does a Key down for CW at 50 watts, I can copy stations right next to him... It is as if his sound card, (Signal Link with internal sound card), is adding a low level hiss to the audio, I see it due to proximity, and my friend does not again, because he is much further away... This has started suddenly, and the owner of the 706 can not pin a change to it... We swapped in a different 706MK2G, and the same problem still happens... Has anyone heard of this happening with a SignalLink sound card before? -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info __ 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
