Dr. Ulrich Rohde, N1UL, is a pioneer in RF oscillator and receiver design. Over the last 40 years, N1UL has authored over 60 articles for QST and QEX magazines, in addition to books, academic papers, and articles. Dr. Rohde has made significant scientific contributions to his family business, the Munich based Rohde and Schwarz test equipment company, and to amateur radio
manufacturers including Icom. Ulrich, N1UL tells his ham radio story in this QSO Today.
Antenna
Portable Antenna Build by K6UDA
K6UDA Radio, The elmer show with attitude. This time I’m building a portable end fed wire antenna that deploys in minutes and is pretty c... Read more
144 MHz Halo Antenna
Construction and Analysis of a Low Cost Omnidirectional Horizontally Polarized Antenna for 144 MHz by Dr. Carol F. Milazzo, KP4MD (posted 23 May 2012)... Read more
BWDS Base Broadband HF Folded Dipole Antenna
Barker & Williamson’s BWDS series of broadband folded dipole antennas, together with our MK114 or MK112 mast systems, gives rear tactical a... Read more
Ionopheric Propagation of Dipoles
Edwin Anderson, asks what is the proper orientation and angle for a dipole if he plans to use it for ionospheric propagation? Read more
SAL 30 Mark II Receiving HF antenna by Array Solutions
The new version of the well known Shared Apex Loop Array, the SAL-30 Mark II is here. The four vertical sides of the loops have been replaced by a sin... Read more
News
Use your Privileges Properly – Ham Radio
Due to some inquiry by Eric, KB0YDN, I decided to make this video discussing the incident of the Ham Firefighting Interference in Idaho Last year. Thi... Read more
ISM Packet Decoder Plugin For SDR Sharp – RTL 433
Here we take a look at the RTL433 Plugin for SDR Sharp, making it easy to decode ISM RF Packets. https://github.com/marco402/plugin-Rtl433-for-SdrShar... Read more
Increase in unidentified intruders
IARUMS newsletter IARU Monitoring System (IARUMS) Region 1 newsletter reports an increase in unidentified intruders in the amateur radio bands followi... Read more
I’m an Intern at ARRL Headquarters!
“I’m Jherica Goodgame, KI5HTA, and I’m a 2022 summer intern at ARRL HQ. Join me while I show you around some of my favorite parts of... Read more
Antenna on Sloping Ground – What happens?
“Various terrain and Antennas: You can make the slope work to your advantage. I know your next question already. Hang on. I’ll make a vide... Read more
Equipment
West Mountain Radio – Dayton Hamvention 2022
West Mountain Radio 2022 saw the return of the Dayton Hamvention and also celebrated the 70th anniversary of the world’s largest ham radio trad... Read more
SDRplay SDRconnect demo at Friedrichshafen 2022
This video shows the demo we showed at Ham Radio 2022, in Friedrichshafen, Germany. This demonstrates the core underlying technology behind what we’re... Read more
Building a Yaesu FT-891 remote control box
Dave, KZ9V stops by the shack, and share with us his memory keyer remote control box he built for the Yaesu FT-891 Read more
4 Way Remote Antenna Switch with WiFi
Remote Antenna Switch 2022 saw the return of the Dayton Hamvention and also celebrated the 70th anniversary of the world’s largest ham radio tra... Read more
Expert Linear 1.5-FA Solid State Amplifier [ Hamvention ]
Solid State Amplifier Powerful: 1.5 kW typ. (+/- 0.5dB) Very Light: about 10 kgs (about 22 lbs). Very Small: H 12, W 28, D 36 cm. (4.72″ X 11.2... Read more
Digital Modes
The Ultimate Portable Ham Radio Computer
Hello Operators. In this episode of the OH8STN ham radio, we are discussing replacing the raspberry pi field computer build, with the Microsoft Surfac... Read more
Get Started with FT8 – An Introduction for Beginners
FT8 is a mode in the WSJT-X software developed by Dr Joe Taylor K1JT. In this video I show how to get started and make contacts with FT8, introduction... Read more
WSJT-X Version 2.5.1 has been Released
The WSJT-X development team has announced the general availability release of WSJT-X version 2.5.1. This release mainly contains i... Read more
WSJT-X Errors? Try This Simple Fix
Does WSJT-X display errors when you transmit with your radio? Try this simple fix which has helped me get rid of those frustrating errors. Read more
WSJT-X version 2.5.1 released
WSJT-X version 2.5.1 releasedThe development team have announced the General Availability (GA) release of WSJT-X version 2.5.1. This release mainly co... Read more