FOTOGALLERY - 20191217 Auguri di Natale soci ARIPG

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Previsioni Meteo Umbria

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

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The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
  • WL2XUP is an FCC Part 5 Experimental station operated by Lin Holcomb, NI4Y, in Georgia. It’s licensed to operate with up to 400 W effective radiated power (ERP) between 40.660 MHz to 40.700 MHz.John Desmond, EI7GL, reports that as of mid-July, WL2XUP was intermittently transmitting on Weak-Signal Propagation Reporter (WSPR) on 40.662 MHz (1500 Hz) for 2 minutes out of every 10, with an output p...

  • On July 6, an evening Army Military Auxiliary Radio System (MARS) HF practice net in Federal Emergency Management Agency (FEMA) Region 2 (New York and New Jersey) was interrupted by several “mayday” distress calls on the channel, which is shared with the maritime service. Net control station Ron Tomo, KE2UK, immediately halted training and attempted (without success) to establish radio communic...

  • The Missouri First Capitol State Historic Site in St. Charles will host an amateur radio event on August 10, in association with this year’s celebration of the Missouri State Bicentennial. The original capitol building on the west bank of the Missouri River served as the state’s capitol from 1821 to 1826. The site is part of the St. Charles Historic District in the city’s Riverfront neighborhoo...

  • The FCC is seeking nominations for a chairperson and members of the Technological Advisory Council (TAC). In a July 21 Public Notice, the Commission announced that it intends to re-establish the TAC for 2 years, by August 20, 2021. It’s anticipated that the renewed panel could hold is first meeting in October.The TAC provides technical advice to the FCC and makes recommendations on the issues a...

  • At its just-concluded July 2021 meeting, the ARRL Board of Directors approved By-Law changes creating a third Standing Committee that joins the existing Administration and Finance Committee and Programs and Services Committee.The charter of the new Emergency Communications and Field Services Committee (EC-FSC) is to develop and recommend new or modified Board policy and programs for emergency c...

  • Tad Cook, K7RA, Seattle, reports: It’s exciting to observe increasing sunspot activity. Recently Solar Cycle 25 produced new sunspots frequently, and I watch them pop up every day on Spaceweather.com. New sunspots emerged on July 14, 16, 17, 19 and 20, and two new ones appeared on July 21. When I look at this image from July 22, our sun is peppered with spots, reminding me of past solar cycles....

  • *** 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
  • Practical Balcony Version of an Old Military Car Antenna, Short Multiband Dipole Array, Balcony Vertical HF Antenna, WSPR beacon, Universal HF Tracker, 70cm Beacon, Beginners Guide to Repeaters, Devils Tower Amateur Radio Club

  • 160m Spitfire Antenna, Portable HF Antenna Options , Kenwood Ts590 v Elecraft K3, FTdx3000 Information pages, Kantronics TNC Wiring, USB to Serial Drivers by PROLIFIC, PC programming cable for Kenwood TH-F7E

  • Beginning 2022 EZNEC will be released to the public domain and become free of cost and can be freely copied and distributed.

  • Homebrewing a 6 Meter Yagi, Online Toroid Multi Calculator, RF Impedance Matching Calculator, IAT Interactive Antenna Table , Basic Microwave Antennas, FT-817 CAT interface, 17 meter QRP Transmitter,

  • Practical Amateur Radio Grounding, How to Ground an Antenna: aerial earthing, 6 meter portable antenna, Electronic Ionosonde to Monitor the Ionosphere , History of the Hexbeam Antennas, 43 Elements Yagi Antenna for 23cm band, HexBeam Antenna Explained,

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

  • Antennas/70cmThis is a simple half wave antenna for 70 cm band, made using the jpole design.

  • Technical Reference/ComponentsFor low voltage applications, like cathode bypass capacitors, most vintage types have an axial configuration, which is less common today but still available. Electrolytic power supply caps likely constitute the single worst liability in old audio, radio and test equipment. Rap about Electrolytics, Reforming, Chassis-Mount Replacements, Under-Chassis Installation, Rebuilding Capacitors

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    I0GEJ  Lidio

    I0NAA  Mario

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