RadCom January 2021, Vol. 97, No. 1

| January 8, 2021

NHS charity auction: prize-winning Morse key donated for GOTA4C

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News and Reports

Around Your Region – Club events calendar 86
Around Your Region – Events roundup 90
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 44
GHz bands, Dr John Worsnop, G4BAO 64
HF, Martin Atherton, G3ZAY 60
Members’ ads 94
Propagation, Gwyn Williams, G4FKH 85
Rallies and events 95
The Last Word 96
VHF/UHF, James Stevens, M0JCQ 62


Book review 66
MFJ-1234 RigPi Radio Station Server, Mike Richards, G4WNC 30
RFinder B1 Dual Band DMR and analogue transceiver, Tim Kirby, GW4VXE 22


Behind the scenes at the RSGB 2020 Convention online, Heather Parsons 26
The RAF Volunteer Radio Reserve in the 1950s, Andy Thomas, G0SFJ 68

Technical features

An investigation into high HF noise levels, Derek Hart, M0WEO 40
Coherent ADC, Andy Talbot, G4JNT 34
Design notes, Andy Talbot, G4JNT 46
Flexible antenna/rig switch, Bob Cowdery, G3UKB 76
HF antenna at G7VAK, Paul Beaumont, G7VAK 80
Interference on power lines, Harold Skelhorn, G8BPU 58
Understanding LoRa, Daimon Tilley, G4USI 54

Category: Front Page News, RadCom