RadCom February 2020, Vol. 96, No. 2

| January 24, 2020

Cover image: QO-100 satellite ground station antenna at Bochum observatory. Courtesy of AMSAT-DL President Peter, DB2OS. Design by Kevin Williams, M6CYB.Calling OSCAR Phase 4—Kuhne’s top-class QO-100 up- and downconverters reviewed

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News and Reports

Around Your Region – Club events calendar 84
Around Your Region – Events roundup 88
New products 14
News 11
RSGB 2020 band plan 28
RSGB Honour Roll 22
RSGB Matters 6
Special Interest Groups News 16


Advertisers’ index 93
Antennas, Mike Parkin, G0JMI 18
Contesting, Steve White, G3ZVW 83
GHz bands, Dr John Worsnop, G4BAO 77
HF, Martin Atherton, G3ZAY 72
LF, Dave Pick, G3YXM 70
Members’ ads 94
Propagation, Gwyn Williams, G4FKH 96
Rallies and events 95
Silent Keys 95
The Last Word 97
VHF/UHF, Simon Hawley, GM8ZKU 74


Book review, Giles Read, G1MFG and Mike Parkin, G0JMI 53
Kuhne 2400MHz upconverter and 10GHz downconverter,
John C. Worsnop, G4BAO 38
Xiegu G90 HF multi-mode transceiver, Steve White, G3ZVW 60


Bushvalley ARC profile 17
FT4: Try data contesting with a difference, Nick Totterdell, G4FAL 25
SOTA G/LD weekend, Mark Wickens, M0NOM 44

Technical Features

Data, Andy Talbot, G4JNT 37
Design notes, Andy Talbot, G4JNT 46
Double-double magnetic loop,
Jack Purdum, W8TEE and Al Peter, AC8GY 64
EMC, Dr David Lauder, G0SNO 54
Navigating the Smith Chart, Michael J. Toia, K3MT 80

Category: Front Page News, RadCom