P3 cw waterfall
Locked
 
|
Is the waterfall speed adjustable?
Any brilliant insights on optimal cw waterfall setup gratefully appreciated! I'm an old fan of the cw skimmer waterfall with traces so clear you can easily read the cw dits/dahs. Thanks & 73, Barry N1EU ______________________________________________________________ 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] |
|
|
The P3 can't compete with a computer but it is handy.
n4lq On Wed, Dec 9, 2015 at 4:10 PM, Barry N1EU <[hidden email]> wrote: > Is the waterfall speed adjustable? > > Any brilliant insights on optimal cw waterfall setup gratefully > appreciated! I'm an old fan of the cw skimmer waterfall with traces > so clear you can easily read the cw dits/dahs. > > Thanks & 73, > Barry N1EU > ______________________________________________________________ > 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 N1EU
On Wed,12/9/2015 1:10 PM, Barry N1EU wrote:
> Is the waterfall speed adjustable? Sure. > Any brilliant insights on optimal cw waterfall setup gratefully > appreciated! I don't use the waterfall to copy CW, I use it to find weak signals, and to find empty holes in a crowded band. For that, I set the top of the display for maximum averaging, and I set the waterfall as slow as it will go. I set the display height to 24 dB for day to day operation, and 42 dB in contests (and DX pileups). I set the bottom of the display so that an empty channel shows up as tiny flecks of noise. I ALWAYS operate in Fixed Tune Mode, so that display averaging continues to accumulate as I tune across the band. When you do all of these things, random band noise goes away (it averages out to zero) so you're left with signals and coherent noise (like switching power supplies). Set the display width depending on what you're doing at the time. For example, to monitor a quiet band for activity, I typically set for 100 kHz or 200 kHz. In a contest, I'll set it for the width of activity for that contest. For a DX pileup, I go about twice as wide as the pileup, with the DX at one end. It can also be quite useful to assign commonly used settings to the soft-keys. I assign the Fixed Tune Toggle, the Peak/Average Toggle, and the display widths that I most often used. For the P3 that I use for spectrum measurements, I also assign the Capture to RAM command. 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] |
|
|
Jim Brown <[hidden email]> writes: > For that, I set the top of the display for maximum averaging, and I > set the waterfall as slow as it will go. I set the display height to > 24 dB for day to day operation, and 42 dB in contests (and DX > pileups). I set the bottom of the display so that an empty channel > shows up as tiny flecks of noise. I ALWAYS operate in Fixed Tune Mode, > so that display averaging continues to accumulate as I tune across the > band. When you do all of these things, random band noise goes away (it > averages out to zero) so you're left with signals and coherent noise > (like switching power supplies). Can you explain "averages to zero"? I would think that random noise would average to something non-zero and then be comparitively reduced by the averaging interval, and thus more like the normal noise level over sqrt(N). Perhaps this is then reliably below the threshold for any color to appear, which would make it effectively zero. (I have only used a P3 once, at field day, so I may be confused.) 73 de n1dam ______________________________________________________________ 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,12/9/2015 5:05 PM, Greg Troxel wrote:
> Can you explain "averages to zero"? I would think that random noise > would average to something non-zero and then be comparitively reduced by > the averaging interval, and thus more like the normal noise level over > sqrt(N). Perhaps this is then reliably below the threshold for any > color to appear, which would make it effectively zero. Perhaps I chose my words poorly. What happens when you set averaging and levels to optimum is that any random noise averages itself out (BECAUSE it's statistically random), so you're left with whatever weak signals and non-random noise is on the band. 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] |
|
|
In reply to this post by Jim Brown-10
While everyone [but me] likes the look of the color waterfall, you might
try selecting the monochrome version in the P3 menu. Guest ops who can actually appreciate the color display have found they can find much weaker signals in the monochrome option. 73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 12/9/2015 4:42 PM, Jim Brown wrote: > On Wed,12/9/2015 1:10 PM, Barry N1EU wrote: >> Is the waterfall speed adjustable? > > Sure. > >> Any brilliant insights on optimal cw waterfall setup gratefully >> appreciated! > > I don't use the waterfall to copy CW, I use it to find weak signals, and > to find empty holes in a crowded band. For that, I set the top of the > display for maximum averaging, and I set the waterfall as slow as it > will go. I set the display height to 24 dB for day to day operation, and > 42 dB in contests (and DX pileups). I set the bottom of the display so > that an empty channel shows up as tiny flecks of noise. I ALWAYS operate > in Fixed Tune Mode, so that display averaging continues to accumulate as > I tune across the band. When you do all of these things, random band > noise goes away (it averages out to zero) so you're left with signals > and coherent noise (like switching power supplies). Set the display > width depending on what you're doing at the time. For example, to > monitor a quiet band for activity, I typically set for 100 kHz or 200 > kHz. In a contest, I'll set it for the width of activity for that > contest. For a DX pileup, I go about twice as wide as the pileup, with > the DX at one end. > > It can also be quite useful to assign commonly used settings to the > soft-keys. I assign the Fixed Tune Toggle, the Peak/Average Toggle, and > the display widths that I most often used. For the P3 that I use for > spectrum measurements, I also assign the Capture to RAM command. > > 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] |
|
|
In reply to this post by Jim Brown-10
I'd like to be able to slow the waterfall down, but I have found no menu
entry that addresses waterfall speed for either the P3 or the SVGA. Is there really a way to do this? 73, Dale WA8SRA > On Wed,12/9/2015 1:10 PM, Barry N1EU wrote: >> Is the waterfall speed adjustable? > > Sure. > ... and I set the waterfall as slow as it > will go ... > > 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] |
|
|
On Wed,12/9/2015 8:55 PM, [hidden email] wrote:
> I'd like to be able to slow the waterfall down, but I have found no menu > entry that addresses waterfall speed for either the P3 or the SVGA. > > Is there really a way to do this? Sure. Unfortunately, my email computer is not in the shack, and it's raining, so I don't feel like running out to the shack to figure out which menu setting does that. :) Poke around the menus and the manual. It's there. On the SVGA, it's possible to get more than a minute on screen. 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] |
|
|
In reply to this post by dmb@lightstream.net
changing the overall rate of the P3 accomplishes this; to truly "slow it
down", the rate has to be pretty high, and it gets pretty choppy. On 12/09/2015 10:55 PM, [hidden email] wrote: > I'd like to be able to slow the waterfall down, but I have found no menu > entry that addresses waterfall speed for either the P3 or the SVGA. > > Is there really a way to do this? > > 73, Dale > WA8SRA > >> On Wed,12/9/2015 1:10 PM, Barry N1EU wrote: >>> Is the waterfall speed adjustable? >> Sure. >> ... and I set the waterfall as slow as it >> will go ... >> >> 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] ______________________________________________________________ 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] |
|
|
Can someone please describe how to simply change the speed of the
waterfall? The update rate doesn't change it. Thanks & 73, Barry N1EU ______________________________________________________________ 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] |
|
|
Barry,
It's as Fred said, it changes as a function of the "Rate" setting when running in the "Fixed" mode, however it does so as a side-effect of the slower screen refresh rates. I was hoping to be able to dramatically slow the waterfall to the point of it displaying 3 to 4 minutes of traces, but without altering the refresh rate of the spectrum display. I don't think that's currently possible though. 73, Dale, WA8SRA > Can someone please describe how to simply change the speed of the > waterfall? The update rate doesn't change it. > > Thanks & 73, > Barry N1EU > ______________________________________________________________ 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 N1EU
The Refresh rate in the P3 menu changes the speed of the waterfall only in Fixed-Tune mode, not in Tracking mode.
Cheers, Fred KE7X For all KE7X Elecraft books, see www.ke7x.com ________________________________________ From: Elecraft <[hidden email]> on behalf of Barry N1EU <[hidden email]> Sent: Thursday, December 10, 2015 4:29 AM To: elecraft Subject: Re: [Elecraft] P3 cw waterfall Can someone please describe how to simply change the speed of the waterfall? The update rate doesn't change it. Thanks & 73, Barry N1EU ______________________________________________________________ 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 Jim Brown-10
I think it's the REFRESH rate, and I believe it works in only one of the
modes -- tracking and fixed-tune -- can't remember which one and my P3 isn't hooked up right now. 73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 12/9/2015 9:13 PM, Jim Brown wrote: > On Wed,12/9/2015 8:55 PM, [hidden email] wrote: >> I'd like to be able to slow the waterfall down, but I have found no menu >> entry that addresses waterfall speed for either the P3 or the SVGA. >> >> Is there really a way to do this? > > Sure. Unfortunately, my email computer is not in the shack, and it's > raining, so I don't feel like running out to the shack to figure out > which menu setting does that. :) Poke around the menus and the manual. > It's there. > > On the SVGA, it's possible to get more than a minute on screen. > > 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] |
|
|
In reply to this post by dmb@lightstream.net
Sorry for my dimness, but I've tried Tracking mode and Fixed-Tune
mode, varying the "update rate" and "refresh rate" and I still am not seeing a change in the waterfall speed. Exactly what do I need to do to see a change in the waterfall speed? In PowerSDR, the Update Period (rate) directly and obviously changes the waterfall speed. And the P3? Thanks & 73, Barry N1EU On Thu, Dec 10, 2015 at 3:29 PM, [hidden email] <[hidden email]> wrote: > Barry, > > It's as Fred said, it changes as a function of the "Rate" setting when > running in the "Fixed" mode, however it does so as a side-effect of the > slower screen refresh rates. I was hoping to be able to dramatically slow > the waterfall to the point of it displaying 3 to 4 minutes of traces, but > without altering the refresh rate of the spectrum display. I don't think > that's currently possible though. > > 73, > > Dale, WA8SRA > >> Can someone please describe how to simply change the speed of the >> waterfall? The update rate doesn't change it. >> >> Thanks & 73, >> Barry N1EU >> > 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] |
|
|
Okay, what I think is tripping me up is the P3 internal waterfall
speed IS varying with update rate but the SVGA waterfall speed is not. Barry N1EU On Thu, Dec 10, 2015 at 11:08 PM, Barry N1EU <[hidden email]> wrote: > Sorry for my dimness, but I've tried Tracking mode and Fixed-Tune > mode, varying the "update rate" and "refresh rate" and I still am not > seeing a change in the waterfall speed. Exactly what do I need to do > to see a change in the waterfall speed? > > In PowerSDR, the Update Period (rate) directly and obviously changes > the waterfall speed. And the P3? > > Thanks & 73, Barry N1EU > > On Thu, Dec 10, 2015 at 3:29 PM, [hidden email] > <[hidden email]> wrote: >> Barry, >> >> It's as Fred said, it changes as a function of the "Rate" setting when >> running in the "Fixed" mode, however it does so as a side-effect of the >> slower screen refresh rates. I was hoping to be able to dramatically slow >> the waterfall to the point of it displaying 3 to 4 minutes of traces, but >> without altering the refresh rate of the spectrum display. I don't think >> that's currently possible though. >> >> 73, >> >> Dale, WA8SRA >> >>> Can someone please describe how to simply change the speed of the >>> waterfall? The update rate doesn't change it. >>> >>> Thanks & 73, >>> Barry N1EU >>> >> 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 N1EU
I remember slowing it down when I first got my P3 but with it currently
sitting on the shelf, I can't go experiment. I went to Fixed-Tune, and set up several spans in the buttons. I set the averaging to max on the spectrum display and min on the WF, and I run the monochrome WF option. Other than those, I find the Elecraft factory options tend to work very well. I think one complication is that the SVGA option complicates the operation a little and there are things that work in the P3 display but not in the SVGA and vice versa. 73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 12/10/2015 3:08 PM, Barry N1EU wrote: > Sorry for my dimness, but I've tried Tracking mode and Fixed-Tune > mode, varying the "update rate" and "refresh rate" and I still am not > seeing a change in the waterfall speed. Exactly what do I need to do > to see a change in the waterfall speed? > > In PowerSDR, the Update Period (rate) directly and obviously changes > the waterfall speed. And the P3? > > Thanks & 73, Barry N1EU ______________________________________________________________ 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 |