RadCom March 2021, Vol. 97, No. 3

| February 26, 2021

ZUMspot RPi Digital Voice Hotspot – using a hotspot to tackle compatibility problems

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News and Reports

Around Your Region – Club events calendar 85
Around Your Region – Events roundup 89
Contest Trophy Winners for 2019/2020, Jacqui Goodey, G6XSY 68
New products 14
News 12
RSGB Matters 6
Special Interest Groups News 16


Advertisers’ index 93
Antennas, Mike Parkin, G0JMI 18
ATV, Dave Crump, G8GKQ 53
Contesting, Steve White, G3ZVW 48
GHz bands, Dr John Worsnop, G4BAO 64
HF, Martin Atherton, G3ZAY 60
Members’ ads 94
Propagation, Gwyn Williams, G4FKH 58
Rallies and events 95
The Last Word 96
VHF/UHF, Paul Marks, G8FVK 62


Book review 67
ZUMspot RPi Digital Voice Hotspot, Mike Richards, G4WNC 30


2020 – A Year in Numbers, Steve Thomas, M1ACB 45
2m scatter for very simple, low powered, stations, Roger Lapthorn, G3XBM 44
YOTA month December 2020, Jamie Williams, M0SDV 72
Z66DX, activating Kosovo under special circumstances, Werner Hasemann, DJ9KH 36

Technical features

10 metres medium-distance propagation via FT8, Steve Nichols, G0KYA 54
A brief look at NEC-5, Dr Marcus C. Walden, G0IJZ 34
Audio DSP processor, Graham Whaley, M7GRW 40
Design notes, Andy Talbot, G4JNT 80
On hearing meteors and aurora, Graham Kimbell, G3TCT 76
New licence regulations for RF electromagnetic fields, RSGB-ARRL EMF Team 22
SOTA working via QO-100 /P, Nick Gregory, G0HIK 26
Tilt-over modifications for verticals, Larry Sharps, G4OHP 66

Category: Front Page News, RadCom