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Going Full-Circle with a Kenwood TS-520S
This article is either a nostalgic yet technical look on restoring this popular ham radio transceiver.
The author reveals personal stories about ...
VK9CV Cocos Keeling DXpedition
IOTA: OC-003 activation planned for November 01 – November 15, 2024
Operation modes: SSB, CW, RTTY , FT8, FT4, PSK
Bands: 160 – 6m, ...
Coil64 Inductance Coil Calculator
Coil64 (Coil32) is a versatile tool for calculating single-layer inductance coils used in various electronics, such as matching circuits and ...
Current consumption for various HF Rigs
In this article, the current consumption for a selection of popular HF transceiver was examined to determine, via an on the field comparison, ...
URC DX RTTY Contest
We are excited to share the news about the inaugural URC DX RTTY Contest, organized by the Unicom Radio Club! We would greatly appreciate your ...
Tri-band Yagi Antenna for 20 17 15 meter band
A cost-effective alternative to the Optibeam OB10-3W, a high-performance but expensive tri-band Yagi antenna for the 20, 17, and 15-meter bands. The ...
The W3HH T2FD Antenna Project
This project describes the construction of a W3HH (T2FD) antenna for HF bands (3-30 MHz). While less efficient than a tuned dipole, it offers broad ...
T2FD Calculator
An Excel sheet calculator for the T2FD wire antenna.
The sheet has been proved to work either on LibreOffice and Apple Numbers.
Just input the ...
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[ARRL] - Monday September 30 2024
Dan Marler, K7REX, the challenger seeking the position of ARRL Northwestern Division Director, was declared disqualified Saturday by the ARRL Ethics and Elections Committee (E&E). Marler was running against incumbent Mark Tharp, KB7HDX. Due to the disqualification, the committee has declared Tharp elected.ARRL’s election rules state, “All matters concerning campaigns, including remedies for iss...
[ARRL] - Friday September 27 2024
[ARRL] - Friday September 27 2024
The Staten Island Technical High School Robotics Team, in Staten Island, New York, took its knowledge and skills to the baseball diamond.The team created a robot that was capable of throwing a ceremonial first pitch and, in early September, the members were invited to showcase and execute their robot at a Staten Island FerryHawks minor league game. But Everton Henriques, KD2ZZT, engineering an...
[ARRL] - Friday September 27 2024
Dale Durham, W5WI, has announced that he is retiring from the position of Section Manager of the ARRL West Texas Section. Dale has served in this role since July 1st, 2017. He has also served as the Section Emergency Coordinator, a Field Instructor, and as an Official Observer.David Overton, W5JDO, has been appointed to fill the remainder of the current term which will end on June 30th, 2025. D...
[ARRL] - Friday September 27 2024
All September, the ARRL® Amateur Radio Emergency Service® (ARES®) has been promoting readiness and resilience for National Preparedness Month. As we come to the end of the month, a hurricane is churning in the Gulf of Mexico, with forecasts of up to 20 feet of storm surge expected to impact large portions of Florida.This underscores the need to be prepared. Even experienced hams and those who h...
[ARRL] - Friday September 27 2024
Seven sunspot groups emerged this week. The first was on September19, three on September 20, one each on September 22 and 23, and thelast on September 25.Average daily sunspot numbers increased from 120 to 137.2, andaverage daily solar flux shifted from 175.7 to 164.3.Geomagnetic numbers were much quieter. Average daily planetary Aindex changed from 35.7 to 14.3, and middle latitude A index fro...
[RSGB] - Friday September 27 2024
With just two weeks until the RSGB Convention, this year’s event is the place to go if you are interested in anything and everything to do with amateur radio. There will be a host of expert speakers presenting on topics ranging from sporadic E, and how to use AI to write amateur radio applications, to […]
[RSGB] - Friday September 27 2024
Jamboree on the Air (JOTA) is taking place 18 to 20 October 2024. The event promotes friendship and global citizenship, and is a brilliant celebration of amateur radio among the groups within the Scout Association. Some groups have already shared details of activities that will be taking place over the weekend, and the RSGB plans […]
[RSGB] - Friday September 27 2024
The RSGB has responded to a recent Ofcom Consultation, which would see new users sharing spectrum within the 2.3GHz amateur band. Whilst the new devices may be limited to indoor use, the RSGB has taken the opportunity to highlight concerns regarding the weak signal 2320MHz segment. In addition, the RSGB has also indicated its wish […]
[RSGB] - Friday September 27 2024
With just two weeks until the RSGB Convention, this year’s event is the place to go if you are interested in anything and everything to do with amateur radio. There will be a host of expert speakers presenting on topics ranging from Sporadic-E and how to use AI to write amateur radio applications, to panel […]