Re: Topband: 160m activity and propagation
UA7 is in zone 16 Good luck in CQWW 160 SSB Sam LY5W On Fri, Feb 21, 2020 at 11:29 PM Jim Brown wrote: > 3-4 weeks either side of the winter solstice, I worked a dozen or so EU > stations using FT8. Nearly all were on the daylight side of their > sunrise. Best DX was a UA7 in Zone 17! > > Last weekend in ARRL DX CW, I worked a bunch of EU stations on 80M, most > well into daylight after their sunrise. > > 73, Jim K9YC > Near San Francisco > > On 2/21/2020 11:17 AM, Wes wrote: > > I worked him at 0500Z > > > > Wes N7WS > > > > On 2/21/2020 11:50 AM, W7RH wrote: > >> > >> Yesterday I worked EA7X two hours after sunset and then the band > closed. > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
3-4 weeks either side of the winter solstice, I worked a dozen or so EU stations using FT8. Nearly all were on the daylight side of their sunrise. Best DX was a UA7 in Zone 17! Last weekend in ARRL DX CW, I worked a bunch of EU stations on 80M, most well into daylight after their sunrise. 73, Jim K9YC Near San Francisco On 2/21/2020 11:17 AM, Wes wrote: I worked him at 0500Z Wes N7WS On 2/21/2020 11:50 AM, W7RH wrote: Yesterday I worked EA7X two hours after sunset and then the band closed. _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Isn't the auroral zone centered on the "geomagnetic pole" rather than the "magnetic pole"? Given that the geomagnetic pole is hardly moving at all in comparison with the magnetic pole, that would indicate that the location of the auroral zone itself shouldn't have moved too much since the last solar minimum. 73 Nick VE7DXR At 18:50 2020-02-21, W7RH wrote: Thanks for the comments in this discussion. I have in previous posts commented on the magnetic north pole and it's migration towards Siberia. I feel this has been the primary cause of propagation disturbance at my location. That and I'm at the wrong distance from the aurora itself creating the high absorption. Here are a couple of links to visualize what I perceive is the cause. Fortunately 160m is almost always open somewhere after dark, not necessarily where I want it to be. Yesterday I worked EA7X two hours after sunset and then the band closed. http://wdc.kugi.kyoto-u.ac.jp/poles/polesexp.html https://www.swpc.noaa.gov/ On the NOAA page click on the right hand image of the Aurora and run the 24 hour collection. You can see I'm in the wrong place at the wrong time. 73 Bob W7RH -- W7RH DM35os "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector Nick Hall-Patch Victoria, BC Canada _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
I worked him at 0500Z Wes N7WS On 2/21/2020 11:50 AM, W7RH wrote: Yesterday I worked EA7X two hours after sunset and then the band closed. _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Thanks for the comments in this discussion. I have in previous posts commented on the magnetic north pole and it's migration towards Siberia. I feel this has been the primary cause of propagation disturbance at my location. That and I'm at the wrong distance from the aurora itself creating the high absorption. Here are a couple of links to visualize what I perceive is the cause. Fortunately 160m is almost always open somewhere after dark, not necessarily where I want it to be. Yesterday I worked EA7X two hours after sunset and then the band closed. http://wdc.kugi.kyoto-u.ac.jp/poles/polesexp.html https://www.swpc.noaa.gov/ On the NOAA page click on the right hand image of the Aurora and run the 24 hour collection. You can see I'm in the wrong place at the wrong time. 73 Bob W7RH -- W7RH DM35os "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
> On Feb 21, 2020, at 11:29 AM, Roy Morgan wrote: > > In that same building is the US standard 1.1 million pound weight. That must have been used to measure our gold reserves accurately...藍 Cecil K5DL > > _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Dave, Thanks for your reply. I am reminded that here I may have topographic maps from late 1800's possibly and from the late 1950's. I will dig them out to see what they show. I assume the numbers you show are for London. Also I'd expect to find accurate current values for my location on line somewhere. It's just of interest - I don't expect to do any important surveying with this Brunton Pocket Transit. I do want to survey our house lot. I think only one corner pin is known. I used to work at NIST/NBS Gaithersburg, MD. On the grounds there is a primary survey monument. It is at the top of a 20-foot(?) pole anchored in bedrock and covered by an innocuous cover in the grass. It and perhaps 2 or 3 others in this part of the country establish the basis for all surveying this side of the Mississippi. It's position is known to a small fraction of an inch. Also on the site is a GPS monitoring system that issues corrections to GPS users doing surveying. In that same building is the US standard 1.1 million pound weight. Ferdinand Hassler was Superintendent of the first thorough survey of the East coast sometime around 1800. See NIST.gov for info about him. Roy Morgan K1LKY Western Mass > On Feb 21, 2020, at 9:39 AM, David Olean wrote: > > Years ago, I think the correction was more like 17 degrees in New England. > ...magnetic variations for London, England over the last few centuries. The > pole really does move. > > YEAR DECL. > > 1600 8E > 1650 1E > 1700 7W > 1750 18W > 1800 24W > 1850 22W > 1900 16W > 1950 8W > 1970 7W > > 73 > Dave K1WHS _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Years ago, I think the correction was more like 17 degrees in New England. I did some work on the geomagnetic field some years ago, and remembered getting magnetic variations for London, England over the last few centuries. The pole really does move. YEAR DECL. 1600 8E 1650 1E 1700 7W 1750 18W 1800 24W 1850 22W 1900 16W 1950 8W 1970 7W 73 Dave K1WHS On 2/21/2020 2:05 PM, Roy Morgan wrote: Hello Frantisek and others, I wonder how much the magnetic pole has shifted. I have been reviewing the operation of the Brunton Pocket Transit here. It has an adjustment for declination - the angular difference between the magnetic North Pole and the true rotational axis North Pole. Here in Western Massachusetts it has been about 15 degrees East for a very long time. I wonder if that is changing. Roy Morgan K1LKY Western Mass On Feb 21, 2020, at 4:59 AM, Frantisek Mikulenka wrote: Hi Bob, did you take in mind increasing magnetic pole (and accompanied aurora oval) eastern shift from Canada towards Siberia ? 73 Frantisek OK2BUZ _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Hello Frantisek and others, I wonder how much the magnetic pole has shifted. I have been reviewing the operation of the Brunton Pocket Transit here. It has an adjustment for declination - the angular difference between the magnetic North Pole and the true rotational axis North Pole. Here in Western Massachusetts it has been about 15 degrees East for a very long time. I wonder if that is changing. Roy Morgan K1LKY Western Mass > On Feb 21, 2020, at 4:59 AM, Frantisek Mikulenka > wrote: > > Hi Bob, > > did you take in mind increasing magnetic pole (and accompanied aurora > oval) eastern shift from Canada towards Siberia ? > > 73 > Frantisek OK2BUZ _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160m activity and propagation
Hi Bob, did you take in mind increasing magnetic pole (and accompanied aurora oval) eastern shift from Canada towards Siberia ? 73 Frantisek OK2BUZ -Original Message- From: Topband [mailto:topband-bounces+frantisek.mikulenka=onsemi@contesting.com] On Behalf Of W7RH Sent: Friday, February 21, 2020 3:57 AM To: topband@contesting.com Subject: Topband: 160m activity and propagation [External Email]: This email arrived from an external source - Please exercise caution when opening any attachments or clicking on links. Perhaps I was misunderstood by some in their comments regarding my post. As Larry N7DD pointed out the stations are there at least in the contests. My comments were pointed at changing propagation characteristics. It is no uncommon for huge swings between my location, N7DD near Tucson and NA7TB on the Mexican boarder near New Mexico. 300-500 miles can make a huge difference. They often flip over the over a two day contest period. I am very lucky and have a great RX location with very low noise. At this moment (0300) my s-meter is S1-S2 on the TX/RX array pointed to EU. My point is that more often than not a station may be 349 at my place and 579 down south 300 miles. This was not the case during the last solar cycle. I will note I have logged many new calls the past year and it's always a pleasure to work a new one. I just expected more openings than what we've had for this solar minimum. 73 Bob W7RH -- W7RH DM35os "It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein _ Searchable Archives: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.contesting.com_-5Ftopband=DwIGaQ=MHZppzMdXMt3JYjCV71UsQ=9RCkX242BvtLSM_YeVdZxjaSxBfohs186YhpUXo2AAw=q5_jhHgh6RqygNDIfWPQCytVdzbQLGLw6fPX1ls1ZRA=7XvhqlIaaVCJqJRUr8k1Opr8WD39TbLixW-2QL1WK5k= - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
