Mark Allgar
RSGB Commercial Manager
Mark Allgar's Latest Posts
Radio Auroras 3rd Edition
Edited by Steve Telenius-Lowe, G4JVG Radio amateurs know that radio auroras vary propagation on both VHF and HF so this book is designed to provide an understanding what is going on and how to take advantage of them. This 3rd edition has been updated to include the increase in activity in Sunspot Cycle 25 and […]
RSGB Yearbook 2026
More calls than ever With ever more UK and Northern Ireland callsigns on issue the RSGB Yearbook has grown to include 105,000 callsigns. That doesn’t count all that are on issue as you will also find details of Special Contest Calls, Permanent Special Event Callsigns and even Repeaters and Beacons. Using the latest available Ofcom […]
Understanding Amateur Radio Mathematics
By: Michael Burnette, AF7KB If you find some of the maths associated with amateur radio challenging or are looking for extra support while studying for your licence, then Understanding Amateur Radio Mathematics is for you. It is estimated that 20% of people experience genuine anxiety whenever maths is mentioned. So, this book sets out to […]
Radiotoday Guide to the Icom IC-R8600
By Andrew Barron, ZL3DW For many the Icom IC-R8600 is one of the best receivers currently available, however as with all sophisticated radios are you getting the most from it? The Icom IC-R8600 has a vast array of features and as always Andrew Barron, ZL3DW sets to explain the things that make the radio special. […]
Introduction to Antenna Modelling
2nd Edition By: Steve Nichols, G0KYA For many years the only way for most radio amateurs to work out how well an antenna design would work was to build it and find out. Written by antenna guru Steve Nichols, G0KYA, An Introduction to Antenna Modelling uses computer-based antenna modelling to provide details of performance before […]
RSGB Callseeker 2025
With over 103,000 UK callsigns and far more are included from across Europe the Callseeker Plus 2025 is far more that an electronic version of the RSGB Yearbook 2025. Callseeker Plus is simple to use and takes up no computer hard disc space as it runs straight from the CD or memory stick. You can […]
