RadCom Plus, Vol. 1, No. 1

| April 30, 2015

Cover image: The Dual Z-match for 1.8 to 146MHz. Photo courtesy of Bob, G3OOU.

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4 The DG8
Ian White, GM3SEK builds a low-cost, high performance masthead preamp for 2m that uses a novel method of Tx/Rx switching
12 Building a Dual Z-Match
Covering 1.8MHz to 146MHz, Bob Burns, G3OOU designed this wide frequency range dual Z-Match for use with his stub loaded multiband dipole
22 Examining Sporadic E
Dr Chris Barnes, GW4BZD researches new methods for predicting the start of the UK sporadic E season
32 High performance common-modes chokes
A detailed explanation of a much misunderstood component from Steve Hunt, G3TXQ
40 Screening
Peter Chadwick, G3RZP looks at screening to stop stages interacting and oscillating, or to stop unwanted radiation
44 A versatile PLL PC board design
A project from Brian Flynn, GM8BJF that can be used to provide accurate, stable frequency source

Category: RadCom Plus