How to Blow Up Your Balun
Antennas/Baluns
In this article, author examine stresses placed on common-mode chokes (aka baluns) as hams use/abuse them, examine the efficiency of simple dipole multi- band antennas and their feed systems. Stressing a Balun.
Top Amateur Radio Websites - Issue 2137
Antenna Switch, Groundplane Antennas at Various Heights , QRP HF Loop Antenna, Homebrew 1 Watt 2.4 GHz Power Amplifier, 9 Element Yagi for 144 MHz, Slim Jim Antenna Calculator by M0NWK, Longmont Amateur Radio Club Website, 7 Element QUAGI for Satelitte Operations
New IRTS Committee members
Following a committee meeting held on Saturday 18th, we are pleased to announce the appointment of three new members to the Irish Radio Transmitters Society (IRTS) Committee
ICQPodcast - New Open GD77 Firmware review
In this episode, Martin Butler (M1MRB) is joined by Chris Howard (M0TCH), Martin Rothwell (M0SGL), Leslie Butterfield (G0CIB), Frank Howell (K4FMH), and Bill Barnes (WC3B) to discuss the latest Amateur / Ham Radio news. Colin (M6BOY) rounds up the news in brief and in the episode, we feature New Open GD77 Firmware review by Ed Durrant (DD5LP)
HF Band Plan review
Over the past 18 month a proposal for an IARU HF Digital Mode reorganization has been undertaken by representatives of all three IARU Regions
OG2Y - New youth callsign for Finland
The SRAL has announced the callsign OG2Y has been issued for Youth activities in Finland
G4CQM's Yagi Designs @ The DX Shop
Derek G4CQM skilfully uses YO7 and AOP (professional versions software) from Brian Beezley K6STI to design a comprehensive and superior range of VHF/UHF yagis including several AOWA (Advanced OWA) designs
Exercise Blue Ham
The RAF Air Cadets (RAFAC) are pleased to announce that they are proposing to run their ever-popular Blue Ham Radio Communications Exercise in October 2021
RSGB's Steve Thomas M1ACB in RAC keynote presentation
Video of Radio Amateurs of Canada (RAC) Conference Keynote Presentation – “A Fireside Chat: Amateur Radio during the Global Pandemic and other topics” with the leaders of the IARU, ARRL, RSGB and RAC
CW morse code course by I4CQO
Operating Modes/Morse code/Morse Code Practice Audio Files
In his page the author includes 27 mp3 audio files that compose the whole CW training course, instructions and whole lessons transcript are available in Italian and English.
ARRL Audio News - September 24, 2020
ARRL Audio News - September 24, 2020
DXFile
Software/Logging
DXFILE is an advanced log management program for radio amateurs. It allows complete management of amateur traffic and much more. Available only in French. Windows Shareware
A gigantic jet with fireballs
This week, a photographer in Puerto Rico watched a 50 mile long plume of plasma shoot from the top of a Caribbean thunderstorm. The towering form contained dozens of fireballs the size of football fields
Russian Digital Radio Club invites you: AUTUMN 2021
Dear Fellow Radio Amateurs, we invite you to participate in the days of activity and contests of our club
Listening to Military Aircraft via Satellite - Larry Van Horn N5FPN
Monitoring The Military From HF Through Satellites - "A Kawfee Tawk"
IARU Region 3 Conference Report
The triennial conference of IARU Region 3 (Asia/Pacific), hosted by Thailand's national amateur radio society RAST, took place September 20-22 in a virtual form using the Zoom platform
Open-Source Amateur Satellite Work Not Subject to Export Administration Regulation
CEO Michelle Thompson, W5NYV, reports that Open Research Institute (ORI) received an advisory opinion from the US Commerce Department Bureau of Industry and Security (BIS) on September 2. The letter confirmed that public internet posts regarding open-source amateur satellite communications work are not subject to Export Administration Regulation (EAR). ORI was founded in March 2018 by Bruce Per...
NEC-Win Plus+
Software/Antenna analysis
Developed for beginners, hobbyists, and field engineers. Includes polar plots, rectangular plots for input impedance and VSWR, tabular data, NEC-Win Synth Light and Necvu 3D. Includes NEC2. The program also offers stepped-diameter corrections, Gain Averaging Test, CAD (.DXF) file input, 2-D and 3-D plots and antenna views, and graphical outputs. Run on older Windows version and is out of support.
New EMF Regulation and QO-100 satellite / Microwave operation
Ian GM3SEK is giving an online talk on the application of the RSGB-Ofcom Calculator to Microwaves and QO-100 satellite operation on Saturday, October 16, at 1230 GMT (1:30pm BST)
RSGB release membership totals
The RSGB have released their membership figures for 2018, 2019, 2020 and up to July 2021
Radio spectrum guide for Birmingham 2022 Commonwealth Games
Ofcom has published a guide with key advice for people who plan to operate radio equipment at the Birmingham 2022 Commonwealth Games
ARRL, RSGB announce joint events to celebrate centenary of Ham Radio transatlantic success
ARRL and the Radio Society of Great Britain will jointly sponsor events to celebrate the achievement of transatlantic communications by radio amateurs 100 years ago
IARU Region 1 Monitoring System Says Radio France International Splatter “Untenable”
The International Amateur Radio Union (IARU) Region 1 Monitoring System (IARUMS) August newsletter reports that Radio France International was active daily between 2100 and 2200 UTC on 7205 kHz. The report says splattering appeared “massively” down to 7186 kHz, which IARUMS called “an untenable condition.” IARUMS said that the “especially well-known intruders” included Voice of Broad Masses (VO...
Home Computing Pioneer Sir Clive Sinclair Dies
Pocket calculator inventor and home computing pioneer Sir Clive Sinclair died at his home on September 16 following a long illness. He was 81. Sinclair may have been best known for popularizing the home computer. Leaving school at 17, he worked for 4 years as a technical journalist to fund Sinclair Radionics and created the Sinclair Spectrum and the first computer, the Sinclair ZX-81. Many mode...
Radio Amateurs on Standby Following La Palma Volcanic Eruption
The Cumbre Vieja volcano on La Palmas in Spain’s Canary Islands erupted for the first time in 50 years on Sunday, September 19, following an increase in seismic activity over the previous 7 days. The lava flow triggered the evacuation of more than 6,000 people so far. Authorities have deployed all the resources of the Canary Islands Government as well as military support from the mainland to ma...
The 2021 ARRL Simulated Emergency Test (SET) is Just Ahead
Registration Opens for USA Amateur Radio Direction Finding Championships
PA1CW
Personal page of the Dutch Amateur Radio Station PA1CW
Modified harpin antenna for 40m
Antennas/40M
Results or performance test using an harpin antenna for the 7 MHz
Railways on the Air
This year's Railways on the Air event will take place on Sept. 25/26
The 2nd annual Treasure Coast Hamfest, Vero Beach Florida
It’s going to be bigger and better than the 1st one, and there’s plenty of time to plan for it, during the best part of the year in Florida.. December 4th, 2021
IARU Region 1 Monitoring System says Radio France International splatter 'untenable'
The International Amateur Radio Union (IARU) Region 1 Monitoring System (IARUMS) August newsletter reports that Radio France International was active daily between 2100 and 2200 UTC on 7205 kHz. The report says splattering appeared “massively” down to 7186 kHz, which IARUMS called “an untenable condition.”
ARISS contact is scheduled for participants at SPDW Voortrekker Movement Camp, Oranjeville, South Africa
This will be a direct contact via amateur radio between participants at the SPDW Voortrekker Movement camp and Astronaut Akihiko Hoshide, amateur radio call sign KE5DNI
Ham radio in Swiss newspaper
Die Botschaft newspaper reports on radio amateurs Leandra Grünenfelder HB3XWQ and her brother Thedy HB9ERV
Clear frequencies requested for possible Nicaragua earthquake traffic
IARU Region 2 Emergency Coordinator Carlos Alberto Santamaría González, CO2JC, has requested that radio amateurs in Central America avoid 7098 and 7198 kHz in the wake of an earthquake at 0957 UTC September 22 in Nicaragua
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