Re: [HCDX] New Sunspot Cycle 24: The Sun Awakens

, that they will be shorter and shorter as we move farther into 2008. - NW7US, Tomas ---[Start Commercial]- Order your WRTH 2008: http://www.hard-core-dx.com/redirect2.php?id=wrth2008 ---[End Commercial]--- Hard-Core-DX mailing list

[HCDX] New Sunspot Cycle 24: The Sun Awakens

Bulletin from Tomas Hood, NW7US: The Sun awakens in the early dawn of Sunspot Cycle 24 During the week of March 24, the Sun became quite active. This, after many months of long stretches of quiet, sunspot-less days. March 25 images of the sun revealed a train of sunspots, NOAA AR 0987 (a beta

Re: [HCDX] HF radio signal propagation topics...

My apologies if this went out twice - I had a glitch with my e-mail program. On 6/4/07, Tomas Hood (NW7US) [EMAIL PROTECTED] wrote: Hello, fellow SWL'er and potential Amateur Radio Operator: 73 de NW7US ---[Start Commercial]- Preorder your WRTH 2007: http://www.hard-core

[HCDX] Is HF propagation reciprocal? (and, De-mystifying HF propagation)

where I take various HF propagation topics, and use modern software to model the concepts. I hope that this is helpful to those of you wishing to dig deeper into space weather and radio signal propagation (especially on HF). 73 es gud DX Tomas Hood / NW7US / Heliophile http

[HCDX] HF radio signal propagation topics...

propagation topics, and use modern software to model the concepts. I hope that this is helpful to those of you wishing to dig deeper into space weather and radio signal propagation (especially on HF). 73 es gud DX Tomas Hood / NW7US / Heliophile : Propagation Editor for CQ, CQ VHF, Popular

[HCDX] NW7US Propagation Alert - 1634 UTC 23 AUG 2005

. Especially on propagation paths that traverse over the poles. More updates, when warranted. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies

[HCDX] Augen auf

http://www.rocknord.de http://www.aktivefrauenfraktion.tk http://www.kopfmord.de http://www.das-gibts-doch-nicht.de http://www.zukunft-europa.info/index.html http://www.geocities.com/scorpios2602/links.html http://www.g-d-f.de http://www.bewaeltigen.de http://www.wk-institut.de

[HCDX] Heads up - poor propagation ahead...

NW7US Propagation Bulletin 07 February 2005 Propagation today (07-II-2005) has turned poor on many HF circuits, due to a fast solar wind originating in a large coronal hole. This coronal hole is located in the northern hemisphere of the visible solar disk, and is in position to continue

[HCDX] Aurora and more...

NW7US Propagation Bulletin Update 21 January 2005 - 1945 UTC As I mentioned early on (see my recent bulletins), the X7 flare unleashed a coronal mass ejection. I had reported that it was probable that the CME was directed Earthward. It was. It has hit, today, and we are now seeing

[HCDX] X7.1 Flare Peak 0659 / Proton Storm

NW7US Propagation Bulletin 20 January 2005 - 1430 UTC At the time of this bulletin, active sunspot region 10720 (720) continues its flaring activity. Since the X3.8 flare of 17-I-2005 that peaked at 0954 UTC, we've seen three M-class flares (peaks at 1134 and 1549 UTC, 18-I-2005 and 1539

[HCDX] Some Updates on Space Weather Events

NW7US Propagation Bulletin Update 20 January 2005 - 1645 UTC This latest X-class flare, the THIRD LARGEST of this solar cycle (Cycle 23), was incredible. It unleashed an extreme (and very sudden) proton event, that has nearly caused a complete white-out of various space weather satellite

[HCDX] NW7US Propagation Bulletin: Aurora and Flares 18-I-2005 1445Z

a problem. HF propagation will be very limited when the shock wave hits. More as new information become available. -- 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member

[HCDX] Correction: Dates

NW7US update / correction The dates in my last bulletin were stated as 17 and 18 January 2005. Please adjust those to 18 and 18 January. A slip of the fingers. Thanks. -- 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live

[HCDX] NW7US Propagation Bulletin (with corrected dates) 18-I-2005 1520Z

The following is a corrected version of NW7US Propagation Bulletin 18 January 2005 - 1520Z Active solar region 10720 (or, just 720) has spawned a great number of flares. So far, three of these unleashed coronal mass ejections directed toward Earth, and triggered proton events. The latest

[HCDX] Arrival of the expected CME 19-I-2005 0030Z

NW7US Propagation Bulletin / Update 19 January 2005 - 0030Z There is speculation that the coronal mass ejection unleashed by the X3.8 level flare from active region 720 may have arrived. It is very difficult to determine exactly when, if indeed it has, arrived. The reason for this lies

[HCDX] MAJOR FLARE/GEO STORM : NW7US Propagation Bulletin Update 0930 UTC 17-I-2005

NW7US Propagation Bulletin Update 0930 UTC, 17 January 2005 It is clear now after analysis that the coronal mass ejection (CME) associated with the X2.6-class X-ray flare of 2302 UTC 15 January 2005 has arrived. The first detection was at 0640 UTC as an energetic ion enhancement

[HCDX] X4.1 FLARE PEAK 0952 UTC 17-I-2005

. It is possible that we will yet see the major to severe geomagnetic storm. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee of RSGB

[HCDX] Geo-storm commencing 1145 UTC

NW7US Propagation Update 17 January 2005 - 1145 UTC The solar wind speed is now (1145 UTC) exceeding 776 km/s with a moderately southward orientation of the interplanetary magnetic field (Bz = -6.6 nT). This rise in wind speed is rather sudden, after a long period of it hovering around 600

[HCDX] [Propagation] NW7US Alert: Precursor to Geomagnetic Storm detected

. It is highly expected that geomagnetic storm activity will begin over the next 24 hours. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee

[HCDX] [SWL] NW7US Alert: Precursor to Geomagnetic Storm detected (0640

. It is highly expected that geomagnetic storm activity will begin over the next 24 hours. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee

[HCDX] NW7US Propagation Bulletin 2030 UTC 17-I-2005

NW7US Propagation Update 17 January 2005 - 2030 UTC The latest long-duration flare from active solar region 720 (the flare measured X3.8 and X4.1, officially recorded as X3.8 at 0659 UTC 17-I-2005), which took 2 hours to reach maximum, and had a long decay as well, unleashed such an intense

[HCDX] Radio AU reported

/visual_propagation.html http://hfradio.org/aurora.html Thanks, and good luck! 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee of RSGB : : US Army

[HCDX] NW7US Alert: Precursor to Geomagnetic Storm detected (0640 UTC 17-I-2005)

. It is highly expected that geomagnetic storm activity will begin over the next 24 hours. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee

[HCDX] Solar Wind Speed Shock detected - Geo-Storm in 12 hours : Update 0716 UTC 17-I-2005

of 171,851.9 degrees K. The Bz went from -0.3 to -1.2 at the same moment. This is a precursor to the beginning of geomagnetic storminess within 12 hours. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http

[HCDX] Coronal Mass Ejection detected: Major Geomagnetic Storm Predicted

NW7US Propagation Update (15 January 2005 0840 UTC) During the series of flares from solar sunspot region 0720, at 0614 UTC 15 January 2005, a strong solar flare and radio sweep event was observed. This indicates a full-halo coronal mass ejection (one that is headed directly toward Earth

[HCDX] NW7US Propagation Update Bulletin 16-I-2005 0430 UTC

NW7US Propagation Update Bulletin 16-I-2005 0430 UTC At the time of this bulletin, we've just witnessed another long-duration flare. This is the strongest of the flares so far unleashed by active sunspot region 720 (NOAA 10720). This flare was a major X2.6-class event that peaked at 2302

[HCDX] NW7US Aurora watch - and Flare Activity Bulletin 15 Jan 2005

Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee of RSGB : : US Army Miltary Affiliate Radio Service (MARS) SMD AAA0WA : : 122.93W 47.67N / Brinnon

[HCDX] Re: [Propagation] Strong to Severe Geomagnetic Storming Occurring

passage. However, forecasts suspected a CME passage from recent events. 73 de Tomas, NW7US (AAR0JA/AAA0WA) : Propagation Editor for CQ, CQ VHF, Popular Communications : : Creator; live propagation center http://prop.hfradio.org/ : : Associate Member of Propagation Studies Committee of RSGB : : US

[HCDX] NW7US Propagation Update: 20-XII-2003

significant F-layer propagation opening on VHF. Happy Dxing! 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor for CQ, CQ VHF, and Popular Communications : : Quarterly Propagation Columnist for Monitoring Times Magazine : : Creator of live propagation center - http://prop.hfradio.org

[HCDX] NW7US Propagation Update: 18-XII-2003

and propagation: http://hfradio.org/forums/ In addition, you can always get the latest live space weather and propagation information at http://prop.hfradio.org -- or with a WAP phone, at http://wap.hfradio.org/ Happy Dxing! 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor for CQ, CQ VHF

[HCDX] NW7US Updated Forecast for CQ WW CW weekend

frequency openings. I'll be watching things closely, and will update my predictions if warrented. You can find the latest version at http://prop.hfradio.org/ Happy DXing! 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org

[HCDX] NW7US Propagation Update: 20-XI-2003

will be posted in follow-up bulletins. Live information is on-going at http://prop.hfradio.org/ and a discussion is at http://hfradio.org/forums/ 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http

[HCDX] NW7US Aurora Alert and Geomagnetic Storm Alert - 20-XI-2003

Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX-Hunting / Propagation : : A creator of solutions -- http://accessnow.com/ -- Perl Rules

[HCDX] NW7US Propagation Update: 11-XI-2003

levels. VHF conditions could be enhanced due to the active aurora conditions and elevated geomagnetic activity. More at http://prop.hfradio.org/ 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org

[HCDX] NW7US Propagation Update: 9-XI-2003

, and 98 for today through Tuesday. But, with the increased geomagnetic activity, the higher bands will still suffer. More info at http://prop.hfradio.org 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http

[HCDX] NW7US Propagation Update for CQ WW CW Contest Weekend

://prop.hfradio.org 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX-Hunting / Propagation : : A creator of solutions -- http

[HCDX] NW7US Propagation Update 6-XI-2003

are finally down in the B range. This is making it better for the lower bands. The 10.7-cm flux is decreasing, as well, so the highest HF bands are less likely to propagate. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org

[HCDX] NW7US Propagation Update: 6-XI-2003 (b)

The CME from the X28 flare (4-XI-2003) has arrived at 1937Z 6-XI-2003. The deviation was a moderate 31 nT at the Boulder, CO station. We expect the Kp index to increase, possibly as high as 6. Right now, the Kp is 5. Some moderate Auroral activity might result for the next 12 hours. More at

[HCDX] The word on the super X-class flare

, such that they will be able to see around the sun at what is coming and what has went. This certainly will become a major tool in our forecasting of space weather, and propagation. I will post my propagation forecast on http://prop.hfradio.org/ late today. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation

[HCDX] Major X-class Flare at 1955Z 4-XI-2003

with fast CME and interplanetary shock waves (Cane, Shelley Howard 1987). Thus, there is a chance that we will have at least a glancing blow from the side of the possible CME associated with this new flare. I will update when more data is known. 73 de Tomas, NW7US (AAR0JA/AAM0EWA

[HCDX] NW7US Propagation Bulletin - 2-XI-2003

somewhat due to the elevated geomagnetic activity. Region 486 and 488 are rotating around the western limb of the sun by 5-XI-2003, and things should quiet down somewhat. Until then, some additional flare activity is possible. The coronal hole activity, however, will continue. 73 de Tomas, NW7US

[HCDX] Re: [SWL] Bands back

and the estimated frequencies affected is at http://www.sec.noaa.gov/rt_plots/dregion.html A full list of links, like this, are on my propagation page ( http://prop.hfradio.org ). 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http

[HCDX] NW7US Propagation Update, 30-X-2003, 2000Z

night, I was hearing SW DX on as high as 17 MHz. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX-Hunting / Propagation

[HCDX] NW7US Propagation Bulletin - 28-X-2003 - 1900Z

cycles have had such bursts during the decline of those cycles. I'll post more about this soon. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB

[HCDX] RE: [CQ-Contest] NW7US Propagation Bulletin - 28-X-2003 - 1900Z

reporting agency. Other agencies, in other countries are reporting these events. What's more, HF propagation shows the result of these events. Unless you are willing to believe that NOAA can cause world-wide propagation degradation, you can't hold onto such cynical views. 73 de NW7US

[HCDX] And propagation is....(update)

, inbetween the occassional flare. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX-Hunting / Propagation : : A creator of solutions -- http

[HCDX] Update on Propagation - an interesting night in North America...

are moving along fairly well, even when many thought that the worst storm for many moons was upon us. Let's see how the rest of the day progresses... Cross our fingers! Maybe the contest will not be a bust. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications

[HCDX] Where's the Beef? Propagation update, 1820Z 25-X-2003

today and tomorrow. The Bz might turn negative during such a grazing passage of the CME, so we might have some elevation in the Kp late today and early tomorrow. However, conditions should continue to be useful for the contest period. At least, in my humble opinion. 73 de Tomas, NW7US (AAR0JA

[HCDX] Update - Propagation today, tomorrow, and the next day...

for a look at this hearing). More to follow, as new information becomes available... 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX

[HCDX] Tonight's conditions...

would love to hear real reports on what you are hearing, especially if you hear unusual DX - stuff that is normally difficult or impossible to DX. Thanks, 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http

[HCDX] URGENT - Contact your representative

. 73 de Tomas, NW7US (AAR0JA/AAM0EWA) -- : Propagation Editor, CQ/CQ VHF/Popular Communications Magazines : : http://hfradio.org/ -- http://prop.hfradio.org/ -- Brinnon, WA : : 122.93W 47.67N - CW / SSB / DIGITAL / DX-Hunting / Propagation : : A creator of solutions -- http://accessnow.com/ -- Perl

[HCDX] Slightly off-topic, but radio related...

installed for you. You should check out the information at http://free.consergent.com I wonder if they will provide technical feedback about the results of these test? What sort of antenna will they provide? 73 de Tomas, NW7US // AAR0JA -- : Propagation Editor, CQ/PopComm Magazines - Member