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Re: ID Timer
Tom, I use this ID timer.
It is not connected to dxlab but is there any reason for the timer to be connected to dxlab. Regards, Jim FitzSimons W7ANF Mailto:w7anf@... --- In dxlab@y..., "Tom Brouard" <stagehand@h...> wrote: Hi Dave,be a feature worth discussing. I noticed while gabbing away that I losttrack of how long it had been since I said my callsign. Here is my thought:clock or digital countdown image appears on the screen. (or can pop up sayafter 9 minutes) and flashes or makes a sound to warn you to ID.to stop counter and log QSO.basic idea.
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Re: ID Timer
Dave Bernstein
There's an ID timer built into WinWarbler, but I hadn't thought of
adding one to DXKeeper. I will do so. 73, Dave, AA6YQ --- In dxlab@y..., "Tom Brouard" <stagehand@h...> wrote: Hi Dave,be a feature worth discussing. I noticed while gabbing away that I losttrack of how long it had been since I said my callsign. Here is my thought:clock or digital countdown image appears on the screen. (or can pop up sayafter 9 minutes) and flashes or makes a sound to warn you to ID.to stop counter and log QSO.basic idea.
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ID Timer
Tom Brouard
Hi Dave,
I was ragchewing this afternoon and thought that an ID timer might be a feature worth discussing. I noticed while gabbing away that I lost track of how long it had been since I said my callsign. Here is my thought: An option in the config screen to turn this feature on or off. When the Start button is pressed in the capture screen of DXKeeper clock or digital countdown image appears on the screen. (or can pop up say after 9 minutes) and flashes or makes a sound to warn you to ID. Press a restart button to countdown again, or press the log button to stop counter and log QSO. I imagine that all sorts of options can be thought of but is the basic idea. Does this sound like a feature that is worthwhile? 73 Tom KB2VNB |
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Re: Progress table/DXKeeper 1.2.5
Dave Bernstein
Keeping a count of each band/mode and country/mode would indeed
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permit "backing out" a logged QSO without recomputation. This would increase the size of the progress table stored in each log file from ~5K bytes to ~15K bytes, which is insignificant from my perspective. Barring better suggestions, strenuous objections, or unforeseen consequences, I will implement this. 73, Dave, AA6YQ --- In dxlab@y..., "Richard B Drake" <rich@w...> wrote:
I think that each time this has happened to me, it was the last |
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Re: PropView Question
Dave Bernstein
You're correct, Ron; I have no idea how I got 3 wavelengths.
At 1.3 wavelengths, the takeoff angle should still be quite a bit below 45 degrees... 73, Dave, AA6YQ --- In dxlab@y..., "Ron Eberson" <zx@c...> wrote: Dave 45 feet are 13.71 meters so 1.3 wavelengths of the ground 1feet are 30,48 CM.the take offtakeas well. off ifyou will |
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Re: PropView Question
Tom Brouard
Thank you all for helping me with this concept. I now have a much clearer
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understanding. It was fun reading all of the information from everyone. I expect to be involved with more discussions of the DXLabs products. I hope to meet you on the airwaves soon. Happy DX 73 de KB2VNB Tom -----Original Message-----
From: Ron Eberson [mailto:zx@...] Sent: Wednesday, April 25, 2001 2:23 PM To: dxlab@... Subject: RE: [dxlab] Re: PropView Question io have 5 over 5 for 28Mhz and have 5 degrees see the diverence in PropView with 15 and 10 degrees so be realistic and make not the good pic. with low angels better take more than less. O.k. for this subjetc i think we must stop this can be weeks going on. Be positif have fun with the programm -----Oorspronkelijk bericht----- Van: Richard B Drake [mailto:rich@...] Verzonden: woensdag 25 april 2001 20:07 Aan: dxlab@... Onderwerp: RE: [dxlab] Re: PropView Question 10 meters is 32.8 feet. So at 45 feet a 10 meter dipole is 1.4 wavelengths high. According to the ARRL Antenna book, such a horizontally polarized antenna would theoretically have peaks in the vertical plane lobes at approximately 10, 30 and 60 degrees. At 5 degrees it is about 6db down from the peak. All of that is assuming that your antenna is mounted over flat perfectly conducting ground which no one actually has. Since we really don't know what kind of ground we have, we don't know at what depth the virtual reflections come from or how much ground loss we suffer to get there. So, it's pretty safe to assume that our actual antennas don't conform exactly to the theory and as Murphy would have it, they almost certainly don't perform as well as theory would have it. However, as Dave says, be optimistic about PropView predictions, assume you have a good 3 to 5 degree radiation angle so that you don't miss a good band opening because you thought you had no radiation at those low angles. However, if you are trying to call an ambulance to take your XYL to the hospital to deliver your first born, use a land line :-) ---- 73, Rich - W3ZJ -----Original Message----- ------------------------ Yahoo! Groups Sponsor ---------------------~-~> ClubMom is the first free organization dedicated to rewarding and celebrating Moms! Join today - it's free - and get your chance to win in our $5,000 Family Vacation Sweepstakes! ------------------------------------------------------------------ ---_-> To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
Ron Eberson
io have 5 over 5 for 28Mhz and have 5 degrees see the diverence in PropView
with 15 and 10 degrees so be realistic and make not the good pic. with low angels better take more than less. O.k. for this subjetc i think we must stop this can be weeks going on. Be positif have fun with the programm -----Oorspronkelijk bericht----- Van: Richard B Drake [mailto:rich@...] Verzonden: woensdag 25 april 2001 20:07 Aan: dxlab@... Onderwerp: RE: [dxlab] Re: PropView Question 10 meters is 32.8 feet. So at 45 feet a 10 meter dipole is 1.4 wavelengths high. According to the ARRL Antenna book, such a horizontally polarized antenna would theoretically have peaks in the vertical plane lobes at approximately 10, 30 and 60 degrees. At 5 degrees it is about 6db down from the peak. All of that is assuming that your antenna is mounted over flat perfectly conducting ground which no one actually has. Since we really don't know what kind of ground we have, we don't know at what depth the virtual reflections come from or how much ground loss we suffer to get there. So, it's pretty safe to assume that our actual antennas don't conform exactly to the theory and as Murphy would have it, they almost certainly don't perform as well as theory would have it. However, as Dave says, be optimistic about PropView predictions, assume you have a good 3 to 5 degree radiation angle so that you don't miss a good band opening because you thought you had no radiation at those low angles. However, if you are trying to call an ambulance to take your XYL to the hospital to deliver your first born, use a land line :-) ---- 73, Rich - W3ZJ -----Original Message----- ------------------------ Yahoo! Groups Sponsor ---------------------~-~> ClubMom is the first free organization dedicated to rewarding and celebrating Moms! Join today - it's free - and get your chance to win in our $5,000 Family Vacation Sweepstakes! ------------------------------------------------------------------ ---_-> To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
10 meters is 32.8 feet. So at 45 feet a 10 meter dipole is 1.4
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wavelengths high. According to the ARRL Antenna book, such a horizontally polarized antenna would theoretically have peaks in the vertical plane lobes at approximately 10, 30 and 60 degrees. At 5 degrees it is about 6db down from the peak. All of that is assuming that your antenna is mounted over flat perfectly conducting ground which no one actually has. Since we really don't know what kind of ground we have, we don't know at what depth the virtual reflections come from or how much ground loss we suffer to get there. So, it's pretty safe to assume that our actual antennas don't conform exactly to the theory and as Murphy would have it, they almost certainly don't perform as well as theory would have it. However, as Dave says, be optimistic about PropView predictions, assume you have a good 3 to 5 degree radiation angle so that you don't miss a good band opening because you thought you had no radiation at those low angles. However, if you are trying to call an ambulance to take your XYL to the hospital to deliver your first born, use a land line :-) ---- 73, Rich - W3ZJ -----Original Message----- ------------------------ Yahoo! Groups Sponsor ---------------------~-~> ClubMom is the first free organization dedicated to rewarding and celebrating Moms! Join today - it's free - and get your chance to win in our $5,000 Family Vacation Sweepstakes! ------------------------------------------------------------------ ---_-> To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
Ron Eberson
There is a standart line for that.
That is what we give and what we always use as a factory i have run for several years PA1ZX ZX-YAGI Ron -----Oorspronkelijk bericht----- Van: Richard B Drake [mailto:rich@...] Verzonden: woensdag 25 april 2001 15:59 Aan: dxlab@... Onderwerp: RE: [dxlab] Re: PropView Question There has been a great deal of research done on this over the years and basically it's a parameter that's almost impossible for most of us to determine accurately. It depends on the type of antenna (vertical or horizontal polarization) the height of the antenna above ground, the conductivity of the ground under your antenna and the terrain. The only real way to determine it is to measure it, and how do you do that without a helicopter taking measurements at different altitudes? Some research done by ARRL and published in the ARRL antenna book suggests that the majority of DX comes in at an angle of about 6 degrees. That's not likely to be the maximum vertical lobe of your antenna on HF unless you have an extremely high (several wavelengths) tower. But, hopefully you have enough radiation at that angle to communicate. If you're getting good reports from DX, it's a pretty good bet that you do. Using 6 degrees as the angle I find PropView to be really helpful in determining statistically the best time and frequency for making contacts over a given DX path. Like weather predictions, it's not 100% accurate but in the absence of major solar flares and geomagnetic storms, it's right more often than wrong. Thus it's a very useful tool. ---- 73, Rich - W3ZJ To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
There has been a great deal of research done on this over the years and basically it's a parameter that's almost impossible for most of us to determine accurately. It depends on the type of antenna (vertical or horizontal polarization) the height of the antenna above ground, the conductivity of the ground under your antenna and the terrain. The only real way to determine it is to measure it, and how do you do that without a helicopter taking measurements at different altitudes? Some research done by ARRL and published in the ARRL antenna book suggests that the majority of DX comes in at an angle of about 6 degrees. That's not likely to be the maximum vertical lobe of your antenna on HF unless you have an extremely high (several wavelengths) tower. But, hopefully you have enough radiation at that angle to communicate. If you're getting good reports from DX, it's a pretty good bet that you do. Using 6 degrees as the angle I find PropView to be really helpful in determining statistically the best time and frequency for making contacts over a given DX path. Like weather predictions, it's not 100% accurate but in the absence of major solar flares and geomagnetic storms, it's right more often than wrong. Thus it's a very useful tool. ---- 73, Rich - W3ZJ |
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Re: Progress table/DXKeeper 1.2.5
I think that each time this has happened to me, it was the last
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QSO entered that I deleted. It was a case of clicking the log button in the capture window when what I really wanted to do was click clear. So, just remembering the last QSO would certainly solve most of it. Last night I had an instance where I entered a callsign in the capture window and hit enter before setting the rig to the correct frequency and mode. Thus it captured the wrong frequency and mode for that station. When I later logged the contact, it logged it as 20M SSB instead of 17M CW where the contact actually was. I corrected it in the log but it did not correct the progress table. Of course, a recompute straightened it out. Perhaps a quick check of frequency and mode should be done before actually logging the info in the capture window. I don't know how you are storing the progress info so perhaps this is not a viable suggestion, but would it not be possible to keep a count on each entry in the progress table so that when a log entry is deleted it would just have to check to see if the deletion was the only entry for that prefix on that band and mode? If the only viable solution is to do a recompute, then I would prefer to do it at my own leisure rather than have the program try to figure out when to do it automatically. It's much too slow to have it run at unexpected times. ---- 73, Rich - W3ZJ -----Original Message----- |
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Re: PropView Question
Ron Eberson
Dave 45 feet are 13.71 meters so 1.3 wavelengths of the ground 1 feet are
30,48 CM. or is that not correct?? -----Oorspronkelijk bericht----- Van: Dave Bernstein [mailto:dhb@...] Verzonden: woensdag 25 april 2001 9:05 Aan: dxlab@... Onderwerp: [dxlab] Re: PropView Question When operated on 10m, a dipole at 45 feet is more than 3 wavelengths off the ground. Shouldn't its takeoff angle be much less than 45 degrees? 73, Dave, AA6YQ --- In dxlab@y..., "Ron Eberson" <zx@c...> wrote: Tomall the way to 6 meters and use them all, so pick your favorite. It is agreat little antenna.dipole at about 45 feet. I would like to have the formula for calculating thetake off as well.off if you will
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Re: PropView Question
Dave Bernstein
When operated on 10m, a dipole at 45 feet is more than 3 wavelengths
off the ground. Shouldn't its takeoff angle be much less than 45 degrees? 73, Dave, AA6YQ --- In dxlab@y..., "Ron Eberson" <zx@c...> wrote: Tomall the way to 6 meters and use them all, so pick your favorite. It is agreat little antenna.dipole at about 45 feet. I would like to have the formula for calculating thetake off as well.off if you will
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Re: PropView Question
Ron Eberson
Tom
You have for a dipool around 45 degrees take off angel. Ron -----Oorspronkelijk bericht----- Van: Tom Brouard [mailto:stagehand@...] Verzonden: woensdag 25 april 2001 2:36 Aan: dxlab@... Onderwerp: RE: [dxlab] PropView Question Ron Thanks for your reply. I am very lucky that I tune from 160 meters all the way to 6 meters and use them all, so pick your favorite. It is a great little antenna. Tom -----Original Message----- From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 7:41 PM To: dxlab@... Subject: RE: [dxlab] PropView Question Give de freq where you use the dipool o.k. -----Oorspronkelijk bericht----- Van: Tom Brouard [mailto:stagehand@...] Verzonden: dinsdag 24 april 2001 21:04 Aan: dxlab@... Onderwerp: RE: [dxlab] PropView Question Hi Ron, I have the same questions that Ted has. I have a Windom TNT2X dipole at about 45 feet. I would like to have the formula for calculating the take off as well. Thank you Tom KB2VNB -----Original Message----- From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 10:45 AM To: dxlab@... Subject: RE: [dxlab] PropView Question Ted Give me your antenna and high from ground i can calculate your take off if you will Ron -----Oorspronkelijk bericht----- Van: Ted Sarah [mailto:w8tts@...] Verzonden: dinsdag 24 april 2001 16:39 Aan: dxlab@... Onderwerp: [dxlab] PropView Question Hi, I'm new to PropView and DXView and I have a couple of questions on PropView. First, under Conditions is Avail %. Can someone fill me in on what this is and where the information comes from. Second, under Transmitter is TakeOff. Is there a simple program to calculate this? I've looked at EZNEC and it's a little deeper than what I want to get into, but if it's the best way to go I'll figure it out. Thanks in advance. 73 - Ted - W8TTS To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: Progress table/DXKeeper 1.2.5
Dave Bernstein
This is not easily accomplished. If you delete a log entry for a QSO
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with P5, the program must rescan all P5 QSOs to properly compute the P5 progress table entry. The "Recompute" button will accomplish this, but a Prefix-specific version would run a little faster. A prefix- specific Recompute could be made automatic after you delete a QSO, but I fear it would make the delete operation annoyingly expensive. Personally, I just run "Recompute" at the end of each operating session to cleanup afer any deletions; this too could be made automatic. I could special case the most-recently-added log entry by remembering the progress table entry for its DXCC entity prior to logging the QSO, thereby allowing an "undo" without recomputation if this log entry is deleted; deleting any other QSO would invalidate the remembered progress entry for the last QSO. Would this be worth the additional user-visible complexity? Comments? If there's a better way to handle this, I'm all ears. 73, Dave, AA6YQ --- In dxlab@y..., "Richard B Drake" <rich@w...> wrote:
Deleting a log entry in DXKeeper 1.2.5 does not automatically |
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Re: PropView Question
Dave Bernstein
Avail % is the required circuit reliability, stated as a percentage
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representing the likelihood that signal quality will be acceptable. 10% is a good number for DXing, particularly for CW or PSK. 50% is a good number for ragchewing. 99% is a good number if you're using HF to call a taxi for your XYL when she's gone into labor. Most antennas radiate and receive at most angles, though there are lobes and nulls. For DXing purposes, we're more concerned with missing a potential path -- so its best to be optimistic with this number. 3 or 5 is a reasonable choice. 73, Dave, AA6YQ --- In dxlab@y..., Ted Sarah <w8tts@a...> wrote:
Hi, |
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Re: PropView Question
Tom Brouard
Ron
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Thanks for your reply. I am very lucky that I tune from 160 meters all the way to 6 meters and use them all, so pick your favorite. It is a great little antenna. Tom -----Original Message-----
From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 7:41 PM To: dxlab@... Subject: RE: [dxlab] PropView Question Give de freq where you use the dipool o.k. -----Oorspronkelijk bericht----- Van: Tom Brouard [mailto:stagehand@...] Verzonden: dinsdag 24 april 2001 21:04 Aan: dxlab@... Onderwerp: RE: [dxlab] PropView Question Hi Ron, I have the same questions that Ted has. I have a Windom TNT2X dipole at about 45 feet. I would like to have the formula for calculating the take off as well. Thank you Tom KB2VNB -----Original Message----- From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 10:45 AM To: dxlab@... Subject: RE: [dxlab] PropView Question Ted Give me your antenna and high from ground i can calculate your take off if you will Ron -----Oorspronkelijk bericht----- Van: Ted Sarah [mailto:w8tts@...] Verzonden: dinsdag 24 april 2001 16:39 Aan: dxlab@... Onderwerp: [dxlab] PropView Question Hi, I'm new to PropView and DXView and I have a couple of questions on PropView. First, under Conditions is Avail %. Can someone fill me in on what this is and where the information comes from. Second, under Transmitter is TakeOff. Is there a simple program to calculate this? I've looked at EZNEC and it's a little deeper than what I want to get into, but if it's the best way to go I'll figure it out. Thanks in advance. 73 - Ted - W8TTS To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
Ron Eberson
Give de freq where you use the dipool o.k.
-----Oorspronkelijk bericht----- Van: Tom Brouard [mailto:stagehand@...] Verzonden: dinsdag 24 april 2001 21:04 Aan: dxlab@... Onderwerp: RE: [dxlab] PropView Question Hi Ron, I have the same questions that Ted has. I have a Windom TNT2X dipole at about 45 feet. I would like to have the formula for calculating the take off as well. Thank you Tom KB2VNB -----Original Message----- From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 10:45 AM To: dxlab@... Subject: RE: [dxlab] PropView Question Ted Give me your antenna and high from ground i can calculate your take off if you will Ron -----Oorspronkelijk bericht----- Van: Ted Sarah [mailto:w8tts@...] Verzonden: dinsdag 24 april 2001 16:39 Aan: dxlab@... Onderwerp: [dxlab] PropView Question Hi, I'm new to PropView and DXView and I have a couple of questions on PropView. First, under Conditions is Avail %. Can someone fill me in on what this is and where the information comes from. Second, under Transmitter is TakeOff. Is there a simple program to calculate this? I've looked at EZNEC and it's a little deeper than what I want to get into, but if it's the best way to go I'll figure it out. Thanks in advance. 73 - Ted - W8TTS To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Re: PropView Question
Tom Brouard
Hi Ron,
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I have the same questions that Ted has. I have a Windom TNT2X dipole at about 45 feet. I would like to have the formula for calculating the take off as well. Thank you Tom KB2VNB -----Original Message-----
From: Ron Eberson [mailto:zx@...] Sent: Tuesday, April 24, 2001 10:45 AM To: dxlab@... Subject: RE: [dxlab] PropView Question Ted Give me your antenna and high from ground i can calculate your take off if you will Ron -----Oorspronkelijk bericht----- Van: Ted Sarah [mailto:w8tts@...] Verzonden: dinsdag 24 april 2001 16:39 Aan: dxlab@... Onderwerp: [dxlab] PropView Question Hi, I'm new to PropView and DXView and I have a couple of questions on PropView. First, under Conditions is Avail %. Can someone fill me in on what this is and where the information comes from. Second, under Transmitter is TakeOff. Is there a simple program to calculate this? I've looked at EZNEC and it's a little deeper than what I want to get into, but if it's the best way to go I'll figure it out. Thanks in advance. 73 - Ted - W8TTS To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to To unsubscribe from this group, send an email to: dxlab-unsubscribe@... Your use of Yahoo! Groups is subject to |
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