Weekly Propagation Summary – 2016 May 16 16:10 UTC

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.

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Listen to the music

Comparing CW audio 

The Elecraft KX3 and the Ten-Tec Eagle

The bands were very poor today from my home and finding stations to operate were few and far between, especially at QRP power.  So I thought I'd take a break from operating and create a brief video demonstrating the CW audio differences between the Ten-Tec Eagle and the Elecraft KX3.



The radios

The Elecraft KX3 and Ten-Tec Eagle don't have much in common apart from having DSP architectures and both being from American radio manufacturers.  The Eagle is devoid of bells, whistles and has no-menus.  On the Eagle, what you see is all you get, as opposed to the KX3 which has multiple kitchen sinks stuffed into it's tiny enclosure. 


Setup

Both radios have their pre-amps off and DSP bandwidth set to 500 Hz.  I have the RF gain reduced by about 15dB on each radio since turning up the RF gain on a noisy day like today just makes for white noise.  

During the video I operated the NR (noise reduction) button on the Eagle to demonstrate how it makes a signal pop and in the same manner operate the APF (audio peaking filter) on the KX3.  I end the demonstration by reducing the DSP bandwidth down to about 100 Hz on each radio.  The Eagle has both 600 Hz and a 300 Hz IF filters so it gets a bit of insertion loss when I pass through the 300 Hz setting.  There were no adjacent signals so the IF filtering wasn't doing anything for either radio in this case.

The audio from the Eagle is coming from its built-in speaker, while on the KX3 I'm using an iHome external, self-powered, speaker.  The KX3 has an abysmal internal speaker and there's little point in trying to listen to it compared to a radio with a real speaker.  In my opinion that speaker is one of the few serious flaws in the KX3.  

After I shot the video I realized that there was a bit of a bias against the Eagle's audio because the microphone in the camera was below the top of the Eagle's case and thus wasn't directly hearing the cabinet speaker, whereas it was in direct view of the external speaker connected to the KX3.  The Eagle's audio sounds crisper than this in person when your ears have a straight shot to the speaker.

Subjective listening

Audio is a very subjective thing because people can hear the same thing very differently so I won't comment on my opinion on which I prefer.

I would however be curious to hear other's opinions.


That's all for now

So lower your power and raise your expectations

73/72
Rich, AA4OO

Richard Carpenter, AA4OO, is a regular contributor to AmateurRadio.com and writes from North Carolina, USA. Contact him at [email protected].

ICQ Podcast Episode 211 – Emergency Comms

In this episode, Martin M1MRB / W9ICQ is joined by ED Durrant DD5LP, Dan Romanchik KB6NU, Chris Howard M0TCH and Martin Rothwell M0SGL to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature is - Emergency Comms

  • Young US Ham wins at Science and Engineering Fair
  • ARRL Committee Conducting Youth in Amateur RadioSport Survey
  • UK Advanced Radio Exam 'on demand'
  • Netherlands to Licence Low-Power AM Broadcasters
  • RSGB Examination Standards 1st Report
  • Hara Arena in Consideration for New Fairgrounds
  • UK Air Cadets 5MHz Radio Exercise
  • Online Australian Ham Licence Lookup Service
  • Robotic Lawn Mower EMC Banned in Sweden

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

ICQ Podcast Episode 211 – Emergency Comms

In this episode, Martin M1MRB / W9ICQ is joined by ED Durrant DD5LP, Dan Romanchik KB6NU, Chris Howard M0TCH and Martin Rothwell M0SGL to discuss the latest Amateur / Ham Radio news. Colin M6BOY rounds up the news in brief, and this episodes feature is - Emergency Comms

  • Young US Ham wins at Science and Engineering Fair
  • ARRL Committee Conducting Youth in Amateur RadioSport Survey
  • UK Advanced Radio Exam 'on demand'
  • Netherlands to Licence Low-Power AM Broadcasters
  • RSGB Examination Standards 1st Report
  • Hara Arena in Consideration for New Fairgrounds
  • UK Air Cadets 5MHz Radio Exercise
  • Online Australian Ham Licence Lookup Service
  • Robotic Lawn Mower EMC Banned in Sweden

Colin Butler, M6BOY, is the host of the ICQ Podcast, a weekly radio show about Amateur Radio. Contact him at [email protected].

AmateurLogic 90: Everybody’s Talking About Antennas


AmateurLogic.TV Episode 90 is now available for download.

Tommy’s Antenna Hanging. Emile’s Wet Noodle. Peter has a free antenna reference. George builds the Hula Loop.

Plus viewer email and more.

1:02:10

Download
YouTube


George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

A New Paddle for a New Extra

21Since my last article was published, I made my fourth attempt to pass the extra exam. I knew I had done better, but was pleasantly surprised when the VEs congratulated me. I’m still trying to believe that since it was only one week ago. Never mind that anyway, it doesn’t really have anything to do with the new CW paddle I made.

Way back when, after I had been on the air for a few months, I decided I’d give CW a shot. I knew I’d need a key or paddle, but didn’t really know where to start. A simple Internet search for CW paddle brought up a very large number of beautiful paddles that nearly made me drool. What prevented the drooling was the price attached to nearly all of those lovely paddles. I wasn’t about to spend that kind of money on something that I didn’t even know I could operate.

My next Internet search included the word “homebrew” to see if it were even possible to make a CW paddle that would work. Much to my amazement, there are hundreds of different designs for homebrew CW paddles. Altoid tins, hacksaw blades, plastic, wood, all wire, metal, you name it, someone had created one. Seeing all of those wonderful homemade paddles, I knew it was possible, but was it possible for me?

Read the rest of this post


Greg Walters, KK4TIX, is a special contributor to AmateurRadio.com and writes from Kentucky, USA.

Amateur Radio Weekly – Issue 111

Hara Arena Update
About the time we all were leaving Hara Arena last year, organizers were putting up posters detailing the upgrades that would soon be made to the aging facility.
KE9V

Icom: 3 booths at Dayton. Dedicated D-STAR and Land Mobile booths
We’ll have three IC-7300s in the main booth including demonstrations of it in operation with our RS-BA1 Remote Control Software.
Icom

Dayton forums to be streamed live
Official live coverage of Hamvention, produced by DARALive.
Hamvention

AMSAT: Top 10 reasons to come to Dayton
Rub shoulders with 25,000 of your best friends at the largest hamfest in the United States.
Southgate

Dual-band mobile supports DMR, D-STAR and C4FM
“NEW RADIO” will operate on the 2m & 70cm bands and support the most common ham digital modes, including DMR, D-STAR and C4FM (System Fusion), plus analog FM.
VA3XPR

Ham sues repeater owners
The issue before us is whether repeater owners have the right to determine who can and cannot use their network.
PRN

Open VHF digital voice radio prototype ready for manufacture
The SM2000 will be a small box that contains a fully functional VHF SDR Digital Voice radio.
Rowetel

DMR is getting big around here
As a member of Auxcomm, I noticed DMR radios were in heavy use at the state EOC. Also, every time I get around a group of hams, the subject of DMR comes up.
KK4DSD

No Nonsense Extra Class Study Guide ready for new question pool
The new Extra Class question pool goes into effect on July 1, 2016. KB6NU’s updated study guide is now available.
KB6NU

Solar Efficiency: It’s Not What You Think
We’ll go through a hypothetical power system step by step and examine solar efficiency, then fit the pieces together to make the picture complete.
Off Grid Ham

Video

Icom IC-7300 MNF ANF IF Filter works on interference
The Icom IC-7300 knocks out annoying interference.
K0PIR

Built my Elecraft KX3 in about one minute
DL2YMR


Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.

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