Il 13 febbraio 2010 si è tenuta, presso i locali della Sezione ARI di Perugia, una interessante conferenza tecnica tenuta da I0FTG. Giuseppe e I0NAA, Mario, per approfondire la teoria e la pratica di un ANALIZZATORE DI RETI VETTORIALI (VNWA).

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Ricevitore SDR ARI PG

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Previsioni Meteo Umbria

Risorse di RADIOASTRONOMIA ed E.M.E. by I0NAA

IQ0PG & IQ0PG/P awards


 
 
  
 

 

  
 
 
 

SOLAR DATA PROPAGATION

*** RSS A.R.R.L.

The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.

  • The K7RA Solar Update

     Although our Sun is currently peppered with spots, average daily sunspot number slipped from 134.1 the previous week to 124.7 during this reporting week, May 19 to 25.Average daily solar flux was actually a tiny bit higher, rising hardly at all from 157.3 to 158.8. Solar flux has been in a slow, steady decline from a peak of 179.9 on May 18.A new sunspot group emerged on May 19, two more on Ma...

  • ARRL Headquarters Will Be Closed on Memorial Day, Monday, May 30

    ARRL  The National Association for Amateur Radio® honors and remembers the ultimate sacrifice made by those who served in the U.S. armed forces. ARRL Headquarters will be closed Monday, May 30, 2022, in observance of Memorial Day.There will be no W1AW code practice or bulletin transmissions on Memorial Day. ARRL Headquarters will reopen Tuesday, May 31, at 8 AM EDT.Visit the ARRL Special Events...

  • ARRL Honored by Masons in Newington, Connecticut

    Freemasons of the Sequin-Level Lodge No. 140, located in Newington, Connecticut, recognized ARRL with a presentation on Thursday, April 7, 2022. The special recognition was organized and led by the Lodge's Worshipful Master, Jon Faasen, AA1EZ. Faasen is also a member of the ARRL staff, serving as a Membership Services Representative in the Membership, Marketing, and Communications Department.Fa...

  • Section Manager Spring Election Results

    The results of two Spring Section Manager (SM) elections were determined when the ballots were counted at ARRL Headquarters on Tuesday, May 24, 2022.Because no nominations were received by the original nomination deadline of September 10, 2021, it was necessary to re-solicit nominations for Delaware SM. Joseph Grib, KI3B, a resident of Bear, Delaware was appointed Interim Delaware SM in January...

  • 20th Annual ARRL Donor Recognition Reception Held in Dayton

    The 20th Annual ARRL Donor Recognition Reception was held on Thursday, May 19, 2022, at The Schuster Center Wintergarden in Dayton, Ohio. Over 160 ARRL donors and their guests were in attendance. The keynote speaker for the evening was ARRL Chief Executive Officer David Minster, NA2AA. The event preceded Dayton Hamvention®, held May 20 - 22."What does amateur radio mean to you?" asked Minster a...

  • ARRL EXPO and Hamvention® 2022 a Great Success

    By all accounts, the 2022 Dayton Hamvention®, which also served as the 70th reunion, was a great success. Thousands of ham radio operators, their families and friends, and other enthusiasts passed through the gate during its 3-day run, May 20 - 22, at the Greene County Fairgrounds and Expo Center in Xenia, Ohio. Local reports estimate the event brings over $30 million dollars to the economy of ...

  • The K7RA Solar Update

     Solar activity was up, up, up this week, with average daily sunspot numbers increasing from 74.4 to 134.1, and average daily solar flux from 120.3 to 157.3.To get some perspective, I averaged the weekly averages for sunspot number and solar flux from this bulletin and the previous three, then compared them to the bulletins from one year earlier.A year ago, the averages for 2021 Propagation For...

  • The K7RA Solar Update

    We saw some evidence of sporadic-e propagation this week on 6 and 10 meters, always surprising and exciting.Solar activity was about the same as last week, at least going by the numbers.Average daily sunspot numbers rose slightly from 68.6 to 74.4, while average daily solar flux only budged from 120 to 120.3.Geomagnetic indicators were quieter, with average daily planetary A index shifting from...

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    *** RSS DX ZONE

    Latest articles, reviews and links posted to The DXZone.com, an amateur radio, cb radio, scanning and shortwave radio, reference site The DXZone.com

  • Top Amateur Radio Websites - Issue 2217

    Big Wheel Antenna for VHF , Making Sense of Solar Indices, Six meter Hentenna, SDRangel, The SPC Tuner, E-field Probe Antenna, WebSDR in Andorra

  • Top Amateur Radio Websites - Issue 2216

    The W5JGV Loop Antenna , Square Halo Antenna for 10 and 20 Meters, WebSDR Roma2 Online Radio, Magnetic Loop HF antenna, Ham Census, PhotoQSLs, EDI Log Format,

  • FDS - QSL production has ended

    FDS have ceased the production of QSL cards as of 1st May 2022.

  • Top Amateur Radio Websites - Issue 2215

    How to install a Mini Whip antenna, T2FD Antenna - Terminated and twisted folded dipole, Ham Radio and Solar Power Systems, Folded Dipoles in Yagi Uda Antennas, Transmission Line Details , DK0TE WebSDR Friedrichshafen, WebSDR from Croatia,

  • Top Amateur Radio Websites - Issue 2214

    Build this Vertical Portable HF Antenna, Which part of a dipole radiates most?, Spy Numbers Stations, Pirate QSL Collection, DK0TE Mobile version WebSDR Germany, Pro Audio Engineering, SR4DON Web Radio Receiver, DK0TE KiwiSDR Germany, UR5WT WebSDR on 80m, Northern Utah WebSDR USA

  • ICOM IC-R20

    IC-R20 by Icom. Wideband Receiver Professional radioreceiver, allow double receiver, from HF to Microwave, digital recorde, DTCS, Memories and 11 hours countinuous reception.

  • 20 / 40 Meter Short Coil Loaded Dipole Antenna

    Antennas/DipoleExperimenting a 20 40 meter short coil loaded dipole antenna with the goal to keep the total length under 40 feet so that the dipole can be mounted on two 20 foot fiberglass pole to make a 20/40 meter rotatable dipole.

  • The Timing Keyer

    Technical Reference/Arduino/Morse CodeAn open hardware and open source keyer that allows you to precisely diagnose any timing errors in your keying.

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