KX3 / NaP3 Spur Question
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I posted this query over on the NaP3 Yahoo group, but haven't gotten a lot of replies. Don W3FPR replied as did Larry N8LP, but still no firm resolution. If anyone here on the Elecraft reflector has a KX3 and is using NaP3, please take a look at this question and see if you've seen this issue and if you've resolved it:
My KX3 #5539 is connected to an iMac computer with the Elecraft serial-->USB cable. The RX I/Q port is connected to the iMac's Line In jack on the back. I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. Is there something in NaP3 I can do to get rid of this spike, or is there an issue in the KX3 that I need to follow up with Elecraft? Thanks, Jim / W6JHB ______________________________________________________________ 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 |
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Hi Jim,
I'm not sure this will work, but try enabling RX ISO in the MENU. 73, matt W6NIA On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: >I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. > >I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. Matt Zilmer, W6NIA www.elecraft.com 831-763-4211 x129 Skype: matt.zilmer ______________________________________________________________ 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 |
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Matt,
Turned it on, but it didn't help. I've since turned it off, as I understand that it causes slightly higher battery drain. Tnx for giving it a shot though! Jim / W6JHB On Sunday, Feb 16, 2014, at Sunday, 5:48 PM, Matt Zilmer wrote: > Hi Jim, > > I'm not sure this will work, but try enabling RX ISO in the MENU. > > 73, > matt W6NIA > > On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: > >> I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. >> >> I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. > > Matt Zilmer, W6NIA > www.elecraft.com > 831-763-4211 x129 > Skype: matt.zilmer > > ______________________________________________________________ > 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 ______________________________________________________________ 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 |
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OK, Jim. RX ISO *should not* have helped, but what the heck. In the
KX3's architecture, a moving birdie that correlates to the VFO ought to be associated with the LO. At least in a sane world... Maybe someone else can chime in. 73, matt W6NIA On Mon, 17 Feb 2014 09:42:28 -0800, you wrote: >Matt, > >Turned it on, but it didn't help. I've since turned it off, as I understand that it causes slightly higher battery drain. > >Tnx for giving it a shot though! > >Jim / W6JHB > > >On Sunday, Feb 16, 2014, at Sunday, 5:48 PM, Matt Zilmer wrote: > >> Hi Jim, >> >> I'm not sure this will work, but try enabling RX ISO in the MENU. >> >> 73, >> matt W6NIA >> >> On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: >> >>> I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. >>> >>> I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. >> >> Matt Zilmer, W6NIA >> www.elecraft.com >> 831-763-4211 x129 >> Skype: matt.zilmer >> >> ______________________________________________________________ >> 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 > >______________________________________________________________ >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 -- "Give me six hours to chop down a tree and I will spend the first four sharpening the axe." -A. Lincoln ______________________________________________________________ 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 |
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Matt,
Got a note from Art/KA9ZAP and he suggested that I check the NaP3 Config box labeled "DC Block". I did, and that resolved this issue. Thought I replied ALL on my reply to him but I'm not seeing it on the reflector, so I might have accidentally clicked on simple reply. Anyway, the problem is fixed, at last!!! :-) 73, Jim / W6JHB On Monday, Feb 17, 2014, at Monday, 9:57 AM, Matt Zilmer wrote: > OK, Jim. RX ISO *should not* have helped, but what the heck. In the > KX3's architecture, a moving birdie that correlates to the VFO ought > to be associated with the LO. At least in a sane world... > > Maybe someone else can chime in. > > 73, > matt W6NIA > > On Mon, 17 Feb 2014 09:42:28 -0800, you wrote: > >> Matt, >> >> Turned it on, but it didn't help. I've since turned it off, as I understand that it causes slightly higher battery drain. >> >> Tnx for giving it a shot though! >> >> Jim / W6JHB >> >> >> On Sunday, Feb 16, 2014, at Sunday, 5:48 PM, Matt Zilmer wrote: >> >>> Hi Jim, >>> >>> I'm not sure this will work, but try enabling RX ISO in the MENU. >>> >>> 73, >>> matt W6NIA >>> >>> On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: >>> >>>> I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. >>>> >>>> I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. >>> >>> Matt Zilmer, W6NIA >>> www.elecraft.com >>> 831-763-4211 x129 >>> Skype: matt.zilmer >>> >>> ______________________________________________________________ >>> 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 >> >> ______________________________________________________________ >> 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 > Matt Zilmer, W6NIA > -- > "Give me six hours to chop down a tree and I will > spend the first four sharpening the axe." -A. Lincoln > ______________________________________________________________ > 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 ______________________________________________________________ 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 |
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Sounds like a deadbeat frequency response problem, then.
Interesting... 73, matt W6NIA On Mon, 17 Feb 2014 10:00:42 -0800, you wrote: >Matt, > >Got a note from Art/KA9ZAP and he suggested that I check the NaP3 Config box labeled "DC Block". I did, and that resolved this issue. > >Thought I replied ALL on my reply to him but I'm not seeing it on the reflector, so I might have accidentally clicked on simple reply. Anyway, the problem is fixed, at last!!! :-) > >73, Jim / W6JHB > > >On Monday, Feb 17, 2014, at Monday, 9:57 AM, Matt Zilmer wrote: > >> OK, Jim. RX ISO *should not* have helped, but what the heck. In the >> KX3's architecture, a moving birdie that correlates to the VFO ought >> to be associated with the LO. At least in a sane world... >> >> Maybe someone else can chime in. >> >> 73, >> matt W6NIA >> >> On Mon, 17 Feb 2014 09:42:28 -0800, you wrote: >> >>> Matt, >>> >>> Turned it on, but it didn't help. I've since turned it off, as I understand that it causes slightly higher battery drain. >>> >>> Tnx for giving it a shot though! >>> >>> Jim / W6JHB >>> >>> >>> On Sunday, Feb 16, 2014, at Sunday, 5:48 PM, Matt Zilmer wrote: >>> >>>> Hi Jim, >>>> >>>> I'm not sure this will work, but try enabling RX ISO in the MENU. >>>> >>>> 73, >>>> matt W6NIA >>>> >>>> On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: >>>> >>>>> I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. >>>>> >>>>> I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. >>>> >>>> Matt Zilmer, W6NIA >>>> www.elecraft.com >>>> 831-763-4211 x129 >>>> Skype: matt.zilmer >>>> >>>> ______________________________________________________________ >>>> 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 >>> >>> ______________________________________________________________ >>> 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 >> Matt Zilmer, W6NIA >> -- >> "Give me six hours to chop down a tree and I will >> spend the first four sharpening the axe." -A. Lincoln >> ______________________________________________________________ >> 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 -- "Give me six hours to chop down a tree and I will spend the first four sharpening the axe." -A. Lincoln ______________________________________________________________ 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 |
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I've since closed down my NaP3 session while I work on my taxes (yuckkk...) but as I recall, the documentation for that DC Block thing mentioned it was for systems with less than sparkling sound cards. I'd imagine that the sound card in my iMac is not top of the line quality, as the iMac wasn't designed to be an audiophile's best tool.
Jim On Monday, Feb 17, 2014, at Monday, 10:07 AM, Matt Zilmer wrote: > Sounds like a deadbeat frequency response problem, then. > Interesting... > > 73, > matt W6NIA > > On Mon, 17 Feb 2014 10:00:42 -0800, you wrote: > >> Matt, >> >> Got a note from Art/KA9ZAP and he suggested that I check the NaP3 Config box labeled "DC Block". I did, and that resolved this issue. >> >> Thought I replied ALL on my reply to him but I'm not seeing it on the reflector, so I might have accidentally clicked on simple reply. Anyway, the problem is fixed, at last!!! :-) >> >> 73, Jim / W6JHB >> >> >> On Monday, Feb 17, 2014, at Monday, 9:57 AM, Matt Zilmer wrote: >> >>> OK, Jim. RX ISO *should not* have helped, but what the heck. In the >>> KX3's architecture, a moving birdie that correlates to the VFO ought >>> to be associated with the LO. At least in a sane world... >>> >>> Maybe someone else can chime in. >>> >>> 73, >>> matt W6NIA >>> >>> On Mon, 17 Feb 2014 09:42:28 -0800, you wrote: >>> >>>> Matt, >>>> >>>> Turned it on, but it didn't help. I've since turned it off, as I understand that it causes slightly higher battery drain. >>>> >>>> Tnx for giving it a shot though! >>>> >>>> Jim / W6JHB >>>> >>>> >>>> On Sunday, Feb 16, 2014, at Sunday, 5:48 PM, Matt Zilmer wrote: >>>> >>>>> Hi Jim, >>>>> >>>>> I'm not sure this will work, but try enabling RX ISO in the MENU. >>>>> >>>>> 73, >>>>> matt W6NIA >>>>> >>>>> On Sun, 16 Feb 2014 17:15:18 -0800, you wrote: >>>>> >>>>>> I'm running the current firmware release in the KX3, the Mac OS is at 10.7.5. I bring up NaP3 to see the CW signals on a band and I am seeing a "birdie" or "spike" (or whatever you want to call it) right at the pitch offset frequency. So, for example, with the KX3 pitch set to 550 Hz, and the KX3 sitting on 24.890.00, I'm seeing this thing at 24.890.55. I know absolutely it is the pitch frequency, because I can press & hold CMP and change the pitch frequency and the spikey guy moves with it. Fortunately I'm not talking about a 40db over S9 signal - it is more in the order of about S3 or so. But it is enough to be distracting when looking at the spanadapter and also enough to cover up any "blips" from weak signals underneath it. When I turn on the waterfall view on NaP3, I'm seeing a solid cyan line vertically right under that spike. >>>>>> >>>>>> I can move this spike to my "center line" by changing the global offset in the Configure>Rig panel to what my pitch frequency is. But doing so causes me to not be on a signal when I've clicked on it. >>>>> >>>>> Matt Zilmer, W6NIA >>>>> www.elecraft.com >>>>> 831-763-4211 x129 >>>>> Skype: matt.zilmer >>>>> >>>>> ______________________________________________________________ >>>>> 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 >>>> >>>> ______________________________________________________________ >>>> 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 >>> Matt Zilmer, W6NIA >>> -- >>> "Give me six hours to chop down a tree and I will >>> spend the first four sharpening the axe." -A. Lincoln >>> ______________________________________________________________ >>> 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 > Matt Zilmer, W6NIA > -- > "Give me six hours to chop down a tree and I will > spend the first four sharpening the axe." -A. Lincoln > ______________________________________________________________ > 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 ______________________________________________________________ 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 |
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