Archive for the ‘hf’ Category
Weekly Propagation Summary – 2016 May 30 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2016 May 30 0216 UTC.
Highlights of Solar and Geomagnetic Activity 23 – 29 May 2016
Solar activity was very low on 23, 25, and 27-29 May with only background flare activity observed. Low levels of solar activity were observed on 24 May due to an isolated C1 flare from Region 2546 (S07, L=223, class/area=Cho/550 on 21 May) and on 26 May due to isolated C1 flares from Regions 2546 and 2548 (N13, L=171, class/area=Dsi/130 on 27 May). No Earth-directed coronal mass ejections were observed during the period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels throughout the week.
Geomagnetic field activity was at quiet levels on 23 and 25-26 May and quiet to unsettled levels throughout the remainder of the period with an isolated period of active conditions observed on 28 May due to coronal hole high speed stream influence.
Forecast of Solar and Geomagnetic Activity 30 May – 25 June 2016
Solar activity is expected to be at very low levels with C-class flares possible throughout the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 05-07 and 12-16 Jun with normal to moderate levels expected throughout the remainder of the outlook period.
Geomagnetic field activity is likely to reach G1 (Minor) geomagnetic storm levels on 30 May and 05 Jun and active conditions are expected on 31 May and 06, 11-13, 17 and 24 Jun, all due to the influence of multiple recurrent coronal hole high speed streams. Quiet and quiet to unsettled conditions are expected throughout the remainder of the outlook period under a nominal solar wind regime.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx
Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
We’re on Facebook: http://NW7US.us/swhfr
Weekly Propagation Summary – 2016 May 23 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2016 May 23 0405 UTC.
Highlights of Solar and Geomagnetic Activity 16 – 22 May 2016
Solar activity was low with only B-class and C-class flare activity observed. Regions 2544 (N20, L=295, class/area=Dai/160 on 16 May) and 2546 (S07, L=223, class/area=Cho/550 on 21 May) produced three low-level C-class flares between them, with the largest being a C1.8 at 16/1525 UTC from Region 2544. No Earth-directed coronal mass ejections (CME) were observed during the reporting period.
No proton events were observed at geosynchronous orbit. However, there was a slight enhancement on 16 May from a long duration C3 flare that occured previous to the reporting period. The greater than 10 MeV proton flux reached a maximum of 1 pfu at 16/0030 UTC.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 16, 17, and 19 May and moderate levels on 18, 20-22 May.
Geomagnetic field activity was mostly at quiet to unsettled levels from 16-20 May with an isolated period of active conditions on 17 May in response to a positive polarity coronal hole high speed stream (CH HSS). G1 (Minor) geomagnetic storm levels were observed during the 0600-0900 UTC synoptic period on 21 May due to influences from another positive polarity CH HSS.
Forecast of Solar and Geomagnetic Activity 23 May – 18 June 2016
Solar activity is expected to be very low (B-class flares) to low (C-class flares) levels throughout the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 28-29 May, 01 Jun, 03-09 Jun, 12-13 Jun, and 18 Jun. Moderate flux levels are expected for the remainder of the outlook period.
Geomagnetic field activity is expected to reach G2 (Moderate) geomagnetic storm levels on 04 Jun and G1 (Minor) geomagnetic storm levels on 05 Jun due to the influence of a negative polarity CH HSS. Active geomagnetic levels are expected on 26 May, 30-31 May, 02-03 Jun, 06 Jun, 11-13 Jun, and 17-18 Jun due to various recurrent CH HSSs.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx
Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
We’re on Facebook: http://NW7US.us/swhfr
Weekly Propagation Summary – 2016 May 16 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2016 May 16 0334 UTC.
Highlights of Solar and Geomagnetic Activity 09 – 15 May 2016
Solar activity was low and only C-class flare activity was observed. Region 2543 (S05, L=002, class/area=Dao/90 on 10 May) produced a C7 flare at 14/1134 UTC which was the largest event of the period. Region 2544 (N21,L=296, class/area=Dao/150 on 15 May) produced five low-level C-class flares on 15 May, the largest being a C1 at 15/0502 UTC. Region 2542 (N12, L=357, class/area=Dai/150 on 09 May) produced a long-duration C3 flare at 15/1603 UTC with an associated filament eruption and partial-halo coronal mass ejection (CME) that departed off of the west limb. Forecaster analysis and WSA/Enlil modelling determined that the CME did not have an Earth-directed component. There were no Earth-directed CMEs during the period.
No proton events were observed at geosynchronous orbit. However, a slight enhancement was observed on 15 May associated with a long-duration C3 flare and filament eruption near Region 2542. A peak flux of 2 pfu was observed on 15 May at 2315 UTC.
The greater than 2 MeV electron flux at geosynchronous orbit was at very high levels from 09-13 May due to the influences of a negative polarity coronal hole high speed stream (CH HSS). High levels were observed on 14 May and moderate levels rounded out the week on 15 May.
Geomagnetic field activity was at unsettled to G3 (Strong) geomagnetic storm levels on 09 May due to the residual effects of a co-rotating interaction region and subsequent negative polarity coronal hole high speed stream (CH HSS). Mainly quiet to unsettled conditions were observed for 10-14 May with a nominal solar wind. A positive polarity CH HSS became connected with Earths magnetic field on 15 May causing quiet to active conditions.
Forecast of Solar and Geomagnetic Activity 16 May – 11 June 2016
Solar activity is expected to be at very low (B-class flares) to low (C-class flares) levels throughout the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 16-23 May, 30 May-02 Jun, and 06-10 Jun. Moderate flux levels are expected for the remainder of the period.
Geomagnetic field activity is expected to reach G1 (Minor) geomagnetic storm levels on 16, 19-20 May due to the influence of recurrent positive polarity coronal hole high speed streams (CH HSS). G1 (Minor) storm levels are also expected on 29 May and 04-05 June due to the influnce of negative polarity CH HSSs.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx
Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
We’re on Facebook: http://NW7US.us/swhfr
Summits On The Air – Colorado Style
Summits On The Air – Colorado Style is the title of my presentation at Hamcon Colorado, 2 pm Friday May 13th. I will be discussing the Summits On The Air program and the Colorado 14er Event.
The slides are available here:
Summits On The Air -Colorado Style
The conference will be excellent. I hope to see you there!
73, Bob KØNR
The post Summits On The Air – Colorado Style appeared first on The KØNR Radio Site.
Announcing: 25th Annual Colorado 14er Event
Amateur Radio operators from around Colorado will be climbing many of Colorado’s 14,000-foot mountains and Summits On The Air (SOTA) peaks to set up amateur radio stations in an effort to communicate with other radio amateurs across the state and around the world. Join in on the fun during the 25th annual event and see how many of the mountaintop stations you can contact. This year the event is expanded to include the entire weekend. However, many mountaintop activators will hit the trail early with the goal of being off the summits by noon due to lightning safety concerns.
See the very cool 25 Year Anniversary t-shirts available at http://www.cafepress.com/wg0at
The 14er event includes Summits On the Air (SOTA) peaks, which add over 1700 potential summits! If you aren’t up to climbing a 14er, there are many other summits to choose from (with a wide range of difficulty). See the W0C SOTA web page at w0c-sota.org
Radio operators who plan to activate a summit should post their intent on the ham14er Yahoo Group. To subscribe to the “ham14er” email list, visit the Yahoo groups site at http://groups.yahoo.com/group/ham14er/ . Also, be sure to check out the event information at http://www.ham14er.org It is also a great idea to post an ALERT on the SOTAwatch.org website.
Frequencies used during the event
Activity can occur on any amateur band including HF and VHF. The 2m fm band plan uses a “primary frequency and move up” approach. The 2m fm primary frequency is 147.42 MHz. At the beginning of the event, operators should try calling on 147.42 MHz. As activity increases on that frequency, move on up the band using the 30 kHz steps. Don’t just hang out on 147.42 MHz…move up! The next standard simplex frequency up from 147.42 MHz is 147.45 MHz, followed by 147.48 and 147.51 MHz.
| Frequency (MHz) | Comments | Frequency (MHz) | Comments |
| 147.42 | Primary 2m FM Frequency, then up in 30 kHz steps | 14.060 | 20m CW Frequency |
| 147.45, 147.48, 147.51 | Alternate 2m FM frequencies | 14.345 | 20m SSB Frequency |
| 446.000 | Primary 70 cm FM frequency | 18.092 | 17m CW Frequency |
| 446.025 | Alternate 70 cm FM frequency | 18.158 | 17m SSB Frequency |
| 144.200 | 2m SSB calling frequency | 21.060 | 15m CW Frequency |
| 50.125 | 6m SSB calling frequency | 21.330 | 15m SSB Frequency |
| Other Bands/Modes | Standard calling frequencies and/or band plans apply. | 28.060 | 10m CW Frequency |
| 28.350 | 10m SSB Frequency |
Warning: Climbing mountains is inherently a dangerous activity.
Do not attempt this without proper training, equipment and preparation.
Sponsored by The Colorado 14er Event Task Force
Here’s the event flyer in pdf format: Colorado 14er Event Flyer 2016
The post Announcing: 25th Annual Colorado 14er Event appeared first on The KØNR Radio Site.
Weekly Propagation Summary – 2016 May 09 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2016 May 09 0436 UTC.
Highlights of Solar and Geomagnetic Activity 02 – 08 May 2016
Solar activity was low and only C-class flare activity was observed. Region 2540 (N21, L=068, class/area=Hrx/20 on 01 May) produced a C3 flare at 02/0842 UTC which was the largest event of the period. Region 2535 (N05, L=124, class/area=Hax/60 on 24 Apr) produced a C1 flare at 04/1531 UTC that had an associated Type II radio sweep (est. shock speed 560 km/s) and coronal mass ejection (CME). This CME was first observed in LASCO/C2 coronagraph imagery beginning 04/1412 UTC and likely arrived at Earth early on 08 May (see geomag section below for additional information). A pair of filament eruptions centered near N22E39 and N31E42 were observed in GONG imagery beginning at around 07/1515 UTC. The associated CME was first observed in LASCO/C2 imagery at 07/1648 UTC but analysis indicated that this CME was not Earth-directed.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 03-06 May and moderate levels on 02, 07-08 May.
Geomagnetic field activity was at unsettled to G1 (Minor) geomagnetic storm levels on 02 May with quiet to active levels on 03 May due to the influence of a negative polarity coronal hole high speed stream (CH HSS). Quiet levels were observed on 04 May and quiet to unsettled levels were observed on 05 May under a nominal solar wind regime. The onset of a positive polarity CH HSS caused quiet to G1 (Minor) storm levels on 06 May and quiet to active levels on 07 May. On 08 May G1-G3 (Minor-Strong) geomagnetic storms were observed and analysis suggested that a CME (likely from 04 May as mentioned in solar activity section) was embedded in a CIR preceding a negative polarity CH HSS.
Forecast of Solar and Geomagnetic Activity 09 May – 04 June 2016
Solar activity is expected to be at very low (B-class flares) to low (C-class flares) levels throughout the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach very high levels on 10-13 May and high levels on 09, 14, and 30 May-02 Jun. Moderate flux levels are expected for the remainder of the period.
Geomagnetic field activity is expected to be reach G3 (Strong) geomagnetic storm levels on 09 May and G1 (Minor) storm levels on 10 May due to the influence of a negative polarity coronal hole high speed stream (CH HSS). G1 (Minor) storm levels are likely on 20 May due to the influence of a positive polarity CH HSS as well as on 29 May and 04 Jun due to the influence of negative polarity CH HSSs.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx
Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
We’re on Facebook: http://NW7US.us/swhfr
Weekly Propagation Summary – 2016 May 02 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2016 May 02 0421 UTC.
Highlights of Solar and Geomagnetic Activity 25 April – 01 May 2016
Solar activity was reached low levels this period. A total of seven low-level C-class flares were observed through the week, four of which were from Region 2535 (N05, L=124, class/area=Hax/60 on 24 Apr) and the remaining three were from Region 2539 (N16, L=084, class/area=Eai/100 on 01 May). A pair of coronal mass ejections (CMEs) associated with flare activity from Region 2535 were observed in LASCO C2 coronagraph imagery at 28/0216 UTC and 28/0636 UTC, but did not impact Earth as anticipated.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels on 25-30 Apr and was at normal levels on 01 May.
Geomagnetic field activity was quiet on 25, 28-29 Apr, quiet to unsettled on 26-27, 30 Apr, and quiet to active on 01 May.
Forecast of Solar and Geomagnetic Activity 02 May – 28 May 2016
Solar activity is likely to be low with a slight change for M-class flares (R1-R2 (Minor-Moderate) Radio Blackouts) on 03-16 May due to return of old Region 2529 (N09, L=342) which produced an isolated M6 flare (R2-Moderate Radio Blackout) last rotation. Very low to low levels of solar activity are likely through the remainder of the period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is likely to reach high levels on 11-13 May with normal to moderate levels expected for the remainder of the outlook period.
Geomagnetic field activity is expected to reach G1-G2 (Minor-Moderate) geomagnetic storm levels on 02 May due to an enhanced solar wind environment and prolonged southward magnetic field orientation. G1 (Minor) geomagnetic storms are likely on 11 and 20 May with active levels likely on 10, 12, 14, 19 and 21 May due to the influence of recurrent coronal hole high speed streams (CH HSSs). Quiet to unsettled field activity is expected throughout the remainder of the period.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx
Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
We’re on Facebook: http://NW7US.us/swhfr

















