A Morse Code Practice Oscillator
Technical Reference/Morse Code Oscillator
Maybe not state-of-the-art technology but the author offers a quick and easy project for a Morse code practice oscillator using a 555 timer chip
Schools Set to Talk with Astronauts via Amateur Radio
Amateur Radio on the International Space Station (ARISS) has announced that several schools are planning to communicate with orbiting astronauts in the coming weeks.
Lana'i High & Elementary School in Lana'i City, Hawaii, will attempt the contact between March 20 and 24, 2023. Students attending the high school already study amateur radio and the research being done on the ISS, among other scien...
CW Key-to-Rig Switch Box
Technical Reference/Homebrew
This is an easy afternoon project to switch multiple cw keys between several rigs. If you've ever wanted to change keys on one rig or use one key on several rigs, this gadget makes it easy. Plug keys into the box inputs, and plug each of the box outputs into a rig. No need to fumble around behind the rigs to move a key from one to another or to swap paddles for a bug.
Top Amateur Radio Websites - Issue 2309
A compact 5 bands remote switchable BPF , DJ9PK SWR Meters, Zen and the Art of Radiotelegraphy, KC9ON CW Morse Products, FOC Guide to Morse Code Proficiency, ITU International Morse Code Recommendation,
HF EFHW Antenna Antenna Tuner
Antennas/End-Fed/End Fed Half Wave Antenna
Schemaric diagram for a 80m, 40m, 30m, 20m EFHW Antenna Antenna Tuner. The tuner has been designed for an antenna length of 41m and the counterpoise 7.5m.
Federachi - Chile
Federachi - federacion de clubes de radioaficionados de chile
URE WebCluster
DX Resources/Clusters
Online DX Cluster provided by URE Union Radioafocionados Espanoles Provide current band status, propagation map, solar indices and dx spots with several filtering functions
Chicago Hamfesters Radio Club
Chicago's oldest and best amateur radio club
K1FM Mini Magnetic Loop
Antennas/Magnetic Loop
Original HF magnetic loop antenna designed by the author to work in conjunction with QRP transceivers like the FT-817 in portable operations. In this configuration the loop can operate from 30 to 10 meters. Using a two spires radiator of the same diameter it also covers 40 meters.
ARRL Audio News March 3, 2023
ARRL Audio News March 3, 2023
2023 Hamvention Awards Announced
The 2023 Hamvention Awards committee, chaired by Michael Kalter, W8CI, has announced the 2023 Hamvention award winners.
The Special Achievement Award recipient is Dr. Jason McDonald, MD, N2TPA. He is an active, well-known Amateur Extra-class operator who earned his license in 2003. Dr. McDonald began as a radio frequency engineer before changing careers to become a trauma surgeon. Dr. McDonald’...
Ridgeway Repeater Group
HD8M Galapagos
DX Resources/DX Peditions/2023 DXpeditions
March 1-11 2023 DXPedition to Galapagos, Santa Cruz Island SA-004
Portable 40m CW Transceiver
Technical Reference/QRP Projects/QRP CW Transceiver
Homemade portable transceiver for the 40 meters band.
The Art of Telegraphy: Learning Morse Code with a Practice Oscillator
The importance of having a Morse practice oscillator for those who want to learn Morse code. Options for buying or building one.
28 MHz Antenna Project
Antennas/10M
10m Flowerpot Antenna, monoband half-wave vertical coaxial dipole antenna for 28 Mhz.
W8LT - A History of Amateur Radio at Ohio State University
W8LT is the call sign for the Amateur Radio and RF Club at The Ohio State University (OSU).
The university club has a long history, and archive records indicate that 1926 was the year it officially became a club, likely making it the oldest one on campus. W8LT is just 3 years shy of celebrating its 100th anniversary.
In the early 1920s, the call sign started out as 8LT, until the Radio Act of 192...
ARRL Headquarters will be Closed on Tuesday, February 28
Due to anticipated severe winter weather, ARRL Headquarters will be closed on Tuesday, February 28 for the safety of our staff. We expect things will be back to normal on Wednesday, March 1.
AircraftScatterSharp
Software/Aircraft scatter
Aircraft Scatter Sharp is a windows application to calculate and assist airscatter operations. Real-time capture and display of plane position data derived from internet plane servers, highlighting of aircraft near the ideal position for scatter, Real-time estimation of Doppler shift and its rate of change.
Amateur Radio on the International Space Station Seeking Contact Proposals
The Amateur Radio on the International Space Station (ARISS) program is seeking formal and informal educational institutions and organizations, either individually or working together, to host an amateur radio contact with a crew member on board the International Space Station (ISS).
ARISS anticipates the contact will be held between January 1, 2024, and June 30, 2024. Crew scheduling and ISS or...
3B7M St Brandon DXPedition
DX Resources/DX Peditions/2023 DXpeditions
Saint Brandon expedition 3B7M 2023. Official web site
Top Amateur Radio Websites - Issue 2308
Reverse Polarity Protection, QRM Eleminator by DC2WK, Astatic Mic Wiring Handbook, Ham365, The battle with massive RFI problems in the shack, Worked All Britain Award,
Knightlites QRP Association
Founded in 1995 (or thereabouts) by a small group of QRP enthusiasts in central North Carolina, Knightlites membership quickly started spanning the globe.
Thevenin equivalent calculator
Software/Circuit Design
The Thevenin equivalent simplifies a complex circuit into an equivalent circuit with a voltage source and resistor for easy analysis of voltage and current at any point in the circuit. Use this online Thevenin calculator
2022 Roanoke Division ARRL Service Award Recipient Selected
John Gendron, NJ4Z, has been named the recipient of the 2022 Roanoke Division ARRL Service Award. This award is the highest and most prestigious recognition of an ARRL member operator within the Division's four states who has shown consistent and extensive leadership.
First licensed as a Technician in 2016, Gendron quickly advanced to the General- and Amateur Extra-class licenses. At the same ti...
Airplane scattering
Operating Modes/Aircraft scatter
Operating on Airplane scattering. Scattering of radio signals by airplanes. An introduction to operating ariplane scattering, using aircraft to redirect RF that would otherwise be lost in space. Antenna Pointing, Doppler Shift/Digital Modes, using digital modes to operate airscatter.
ARRL Audio News February 24, 2023
ARRL Audio News February 24, 2023
ARRL Welcomes Kevin Beal, K8EAL, as the Director of Development
Kevin Beal, K8EAL, has joined ARRL staff as the Director of Development. He has a significant background in nonprofit administration, and for the last 17 years, has managed large-scale projects and teams. His previous experience includes various roles supporting organizations and higher education institutions with program management, events, alumni engagement, and fundraising.
Beal has also wo...
KE8RV Madison County Amateur Radio Club
A mission of the club is to promote amateur radio by way of educational programming and activities. MCARC is an affiliated club with the ARRL.
Aircraft Scatter ACS
Operating Modes/Aircraft scatter
Getting started with Aircraft scatter, defined as the process of scatter radio waves of the body of a traveling aircraft in order to enhance the distance possible to bridge on VHF, UHF and microwaves. The ACS path, Equipment requirement and Operating techniques
Bouvet Island DXpedition Wraps Up
The 3Y0J activation of Bouvet Island has finished. The team concluded operations at 3:00 UTC on February 14, 2023, with around 19,000 contacts logged.
The team has boarded the S/V Marama and began their journey to Cape Town, South Africa. They expect to arrive by February 23.
Photos uploaded to social media by Steve Haas, N2AJ, the team's Media Officer, show the harsh reality of the operating env...
20 W HF Power Amplifier
Technical Reference/Amplifiers/HF Amplifiers
A HF power amplifier with a push-pull of AFT09MS015N. The (small-signal) gain of the amplifier is around 26 dB in the lower HF band and goes down to about 24 dB on the higher end and still around 21 dB at 50 MHz. Its input matching is relatively good at the lower HF and degrades above 10 MHz.
Tri-Band VHF/UHF Antenna Design
Antennas/VHF UHF
The TBJ-1 – a triband base antenna was published in March 2017 QST. This antenna covers 2M/220 MHz/70cm in one 6ft 3/4 inch PVC pipe and requires no radials.
Building The Fox-in-a-Box
Technical Reference/Raspberry Pi
Raspberry Pi Telemetry Station project by Burns Fisher, WB1FJ , Chris Thompson G0KLA/AC2CZ. A step by step guide on Building a Fox-In-A-Box The Easy Way, A Prebuilt SD Card Image or from scratch.
Top Amateur Radio Websites - Issue 2307
The M0CVO HW-42HP OCF Antenna, 160m 80m Vertical Antenna, 80m-40m Loaded Dipole, 80m Shortened Dipole Antenna, Band Pass Filters for HF Transceivers, Digital Dummy Load, Kenwood TS480HX Firmware Upgrade,
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