News and Products 
The Tecsun H-501x, ICOM IC-M510, CCrane Wi-Fi3, and new internet transceivers; the RNIB accessible radio and a Radioddity Weather Station, plus radio news from around the world.   

Rallies and Events  
As the main 2021 Rallies Season draws to a close, we offer our full guide to both physical and virtual Hamfests, lecture programmes and local gatherings. Don’t forget: Check out before you set out. 

Airshows 2021
David Smith offers the final instalment for this year of the RadioUser Airshow Guide, recommending the key events to attend at the tail end of a much quieter 2021 season.  

Feature: PPE Observatório Nacional
Martín Butera has been given unprecedented access to a unique Standard Frequency and Time Signal (SFTS) station in Brazil, and he reports on time and frequency measurement by radio.

Airband News
David Smith discusses significant UK airspace changes after COVID-19, reports on the new phenomenon of spaceports in the UK and profiles ATC at RAF Coningsby. 

New Media and Internet Radio
Chrissy Brand refocuses her column to provide a more in-depth curated guide to international online and internet radio programmes and podcasts; she also offers key programme recommendations. 

Feature: Paula and the ‘Huff-Duff’, or: A Remarkable Feline Operator
David Smith discovers the remains of a World War II High-Frequency Direction-Finding (HFDF) station in the undergrowth, reconstructs its vital work and learns about a remarkable cat. 

Push-to-Talk: Two-Way Communications     
Tim Kirby reviews the Inrico T-310 internet transceiver/ network radio, has Stateside CB news and continues with his investigation of the PMR446 side of the radio hobby. 

RadioUser Competition: Win an Inrico T-310
Following Tim Kirby’s review, we have one Inrico T-310 radio to give away to one lucky winner. 

Emerging Issues in Radio 
In her second column this month, Chrissy Brand reports on her recent visit to Radio Caroline and profiles Oldham Community Radio, to highlight similar issues facing two very distinct broadcasters. 

TV and Radio, Past and Present   
Keith Hamer and Garry Smith delve deeper into the history of 85 years of BBC Television, look at the story of electronic scanning equipment and recall the 1936 Radiolympia Exhibition.

Digital Radio 
Kevin Ryan opens up his QSL card album, remembers a noteworthy German-British DRM Joint Venture and offers the latest instalment of his international digital radio news digest.  

Feature: Meteoradio
The editor takes an in-depth look at the many ways in which your radios – and radio technology old and new – can help you to access the very latest in weather and climate information.

Corrections and Feedback | European Private Short Wave Stations 
Here you can find some necessary clarifications, with the editor’s apologies, as well as Stig Hartvig Nielsen’s updated short wave guide for this month.  

History: The Life and Work of Oliver Heaviside (Part 2)  
Scott Caldwell wraps up his story of this much-misunderstood radio pioneer, looking at how declining mental health and growing success eventually went hand-in-hand in Oliver Heaviside’s life. 

Maritime Matters  
Robert Connolly explains the NAVTEX Narrow-Band Direct Printing mode, shares life-saving seasonal safety advice and reports on a noteworthy lighthouse illumination.  

Open Resources and New Publications 
The editor’s preferred choice of the most exciting radio newsletters, open resources, blogs and technical magazines on all matters radio this month. 

Aerials Now 
Keith Rawlings showcases a simple and short end-fed aerial system suggested by a reader and works with his traditional Bird 43 Thruline Power/Watt Meter.
 

Buy the print copy Download the digital edition