The RSGB organised a construction competition. Our own Paul Graham made a splash!
Radcom is the official publication of the Radio Society of Great Britain (RSGB). It is normally included as part of the membership subscription. However, during lockdown you can pick up a copy for free online.
RadCom Basics is the bi-monthly digital version. Radio Amateurs can get copies here; https://rsgb.org/main/publications-archives/radcom-basics/