5 element Yagi antenna for 10 meters band
Antennas/10M
This 10 meter antenna is right out of the ARRL Antenna Book. There are 5 elements on a 24 feet boom and it performs well from 28.0 to 28.9 MHz.
Govt asks Indians to not subscribe to Elon Musk’s satellite internet service Starlink
Elon Musk's SpaceX does not have the license to offer broadband internet services in India, said Ministry of Communication on Friday. It asked citizens not to subscribe to the service
Vintage Ham Radio Gets Brain Transplant
Old radios didn't have much in the way of smarts. But as digital synthesis became more common, radios often had as much digital electronics in them as RF circuits. The problem is that digital electronics get better and better every year, so what looked like high-tech one year is quaint the next
Radio Caroline on 648 khz power increase - reception report request
The opportunity arose to boost our power on 648 AM. This was beyond the ability of the existing Nautel machine. High power AM transmitters are not easily sourced now
Analyzing starlink satellite downlink communications with software defined radio
Often, mere curiosity is sufficient to do something. This is also the case with people trying to analyze the communication setup and protocol which SpaceX is using with their Ku-band based Starlink satellites
New law hits AIS beacons
A new law introduced by Beijing appears to have resulted in ships turning off their automatic AIS beacons (161.975 MHz or 162.025 MHz) when in Chinese waters
10-year-old radio ham launches his 3rd high-altitude APRS balloon
10-year-old radio amateur Max W0MXX has been building Amateur Radio APRS transmitter payloads to act as tracking beacons and launching them into the stratosphere
EMF Compliance in latest Galway newsletter
The Winter 2021 issue of the Galway Radio Club Journal, free to download, is packed with good articles including EMF Compliance by Steve Wright EI5DD who takes a look at the RSGB EMF calculator
UK EMF regulations: New interim guide for microwavers
The UK Microwave Group (UKuG) has made available interim EMF compliance guidance for radio amateurs operating in the microwave bands
QSO Today - Stephen Houser, N1SH
Stephen Houser, N1SH, was essential to helping Rex Harper, W1REX, present his Build-A-Thons at the QSO Today Virtual Ham Expos with multi-camera coverage of Rex’s project demonstrations
ARISS contact is scheduled for students at Colegio Pumahue Temuco, Temuco, Chile
This will be a direct contact via amateur radio between students in Temuco, Chile and Astronaut Raja Chari (KI5LIU). Amateur radio operators using the CE6TC call sign will operate the ham radio ground station for this direct contact
Building the 5-element 10 Meter Yagis
Antennas/10M
A project for a 5-over-5 stack on 10 meters
Troubleshooting Reversible Beverages
Antennas/Beverage
It is very worthwhile to understand how Beverages of all types work. Without that understanding it can be quite difficult to interpret what you hear and what you measure.
BBC Three can return as TV channel
BBC Three is set to return to TV screens for the first time in six years, after Ofcom today approved its relaunch as a broadcast television channel
Mauritius update
Operators Olof G0CKV (3B8HA/SM5CKV), Kazu JK3GAD, Denny KX7M, Jamie M0SDV and Oliver W6NV will be active as 3B8M from Roches Noires during the CQWW DX CW Contest (November 27-28th) as Multi-Multi entry. The team will be active 'a few days before and after' the contest
MSF signal outage 9 December
The MSF signal is occasionally taken off-air to allow maintenance work on the masts and antennas at Anthorn Radio Station to be carried out in safety. A radio-controlled clock will not be able to pick up the MSF signal during these periods, so may drift off from the correct time
India to develop HF OTH Radar ?
A report on the Alpha Defense site suggests India may be building its own HF Over The Horizon (OTH) Radar
LoRa to the Moon and back
Radio amateur Jan van Muijlwijk PA3FXB along with Tammo Jan Dijkema and Frank Zeppenfeldt successfully sent an amateur radio 430 MHz band LoRa message to the Moon and back
GBARC Canadian Club Map
The Georgian Bay Amateur Radio Club is pleased to announce our map display of all Radio Clubs in Canada
Belgium to hold an amateur radio exam in January
Belgium's communications regulator BIPT is to hold an amateur radio exam in the southern Belgium Province of Luxembourg in Wallonia on January 7
Past ARRL Rocky Mountain Division Director Claude Maer, W0IC, SK
Past ARRL Rocky Mountain Division Director Claude Maer, Jr, W0IC, of Denver, Colorado, died on November 16. An ARRL member, he was 102. Maer grew up in Fort Worth, Texas, and attended Rice University in Houston, graduating in 1940 with distinction and enlisting in the US Army Air Corps (USAAC) during World War II. Maer served at various postings, including Lowry Air Force Base in Denver, as wel...
ARRL Headquarters will be closed Thursday and Friday for the Thanksgiving holiday
ARRL Headquarters will be closed on Thursday, November 25, and Friday, November 26, for the Thanksgiving holiday. The ARRL Letter will not be published on Thursday, November 25, and ARRL Audio News will not be produced on Friday, November 26. There will be no W1AW bulletin and code practice transmissions on either day. ARRL Headquarters will reopen on Monday, November 29 at 8 AM EST. ARRL wishes ...
Dayton Hamvention Expects to be Live Event in 2022
Keys to Good Code
Operating Modes/Morse code/Morse operating guides
Article appeared on 73 amateur radio today in 1999 on how to unlock the secrets of sending precise Morse Code. Article contains hints on how use the stright key and the sideswiper key, but even the electronic keyers or the semiautomatic keys.
Benson Hamfest, the classic
There are only a few hamfest‘s that I would classify as 'classic'. The Benson Hamfest in Benson, North Carolina is one of those
FFP2 masks for ham radio exams in Germany
Due to the pandemic Germany's Federal Network Agency (BNetzA) requires those taking amateur radio exams at the Berlin, Nürnberg and München exam venues to wear FFP2 masks (at least 94% filtration)
Fall ARRL Section Manager election results
The only contested seat for Section Manager (SM) in the Fall election cycle was in Kansas, where incumbent Ron Cowan, KB0DTI, of La Cygne, came out on top in the two-person race. Cowan outpolled challenger Lloyd Colston, of Arkansas City, 260 to 225
Amateur radio exam update in latest ICQ podcast
he RSGB has tweeted that the ICQ Podcast episode 364, November 21, carries an update on the amateur radio exams and other RSGB information
ARDC grants will expand emergency capabilities in Haiti and the US Virgin Islands
Grants from Amateur Radio Digital Communications (ARDC) will benefit amateur radio emergency communication networks in Haiti and the US Virgin Islands (USVI)
M0NWK Amateur radio blog by Adrian Leggett
Amateur radio blog by Adrian Leggett M0NWK
Adjusting HF Yagi Gamma Matches
Antennas/Theory/Impedance matching
There are many feed systems used in yagis over the years. Gamma matches are not as common as they once were. More typical are beta matches and T matches to convert the low impedance of a yagi to 50 ohm.
Indonesian special event stations
The South Tangerang Local ORARI group issues an award marking the 13th anniversary of South Tangerang City
Six ways shoebox-sized satellites are trying to change the world
The BBC News website has a fascinating article on the use of Cubesats
Surprise: Some red auroras are 'not' auroras
The biggest geomagnetic storm in years erupted this month, Nov. 4th, after a CME slammed into Earth's magnetic field
Santa Claus returns to Longmont radio club's airwaves
As the coronavirus pandemic continues for a second holiday season, some local Santa's helpers are assuring that children will still get the chance to tell Old St. Nick what they want for Christmas in a safe-distanced way
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