RadCom May 2018, Vol. 94, No. 5

| April 24, 2018

Cover image: a Vibroplex Twin-Paddle Square Racer, photographed by Terry Grice, GM4PSL. Design Kevin Williams, M6CYBVibroplex Twin-Paddle Square Racer—modifications to adjust it precisely to your taste

Online edition

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News and Reports

News and Reports
ARISS contact at YOTA 2017, Ciaran Morgan, M0XTD 16
Around Your Region – Club events calendar 85
Around Your Region – Events roundup 89
New products 14
News 11
RSGB Matters 6


Advertisers’ index 93
Antennas, Mike Parkin, G0JMI 22
ATV, Dave Crump, G8GKQ 75
GHz bands, Dr John Worsnop, G4BAO 62
HF, Martin Atherton, G3ZAY 58
Members’ ads 94
Propagation, Gwyn Williams, G4FKH 96
Rallies & events 95
Sport radio, Steve White, G3ZVW 54
The Last Word 97
VHF/UHF, Richard Staples, G4HGI 60


Book review 82
Porta Paddle-II kit, Martin D. Waller, G0PJO 66

Technical Features

472kHz the lazy way, Roger Lapthorn, G3XBM 32
Design notes, Andy Talbot, G4JNT 30
FT8 – can we predict openings and paths? Steve Nichols, G0KYA 26
Vibroplex Twin-Paddle Square Racer modification, Terry Grice, GM4PSL 38
Frequency agile WSPR Tx/Rx system using a Raspberry Pi 3, Bob Cowdery, G3UKB 40


Bridging the Atlantic, Dr Bruce Taylor, HB9ANY 68
Club of the Year winners 80
Licence training is fun, Lin Allen, M0TCF 76
RSGB Convention and 10th anniversary Hamfest 64
The Last Man of Spark, Giles Read, G1MFG 46

Category: Front Page News, RadCom