RadCom Plus, Vol. 4, No. 1

| October 30, 2019

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Contents

3 VnArduino
An Arduino VNA: vector network analyzer

11 The pros and cons of multiband inverted-V antennas
Investigates the radiation performance of multiband antennas when deployed in horizontal or inverted-V configurations

16 A single frequency repeater
Simultaneous FM Tx + Rx at VHF, as first demonstrated nearly 40 years ago, is being revived for amateur use

24 Another look at transmission lines
Evidence our common understanding of some very familiar transmission lines is incorrect, and that in practice, they do not operate as expected

35 SA3000
A Homemade yet accurate 100kHz to 3GHz spectrum analyser, good up to 20GHz

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Category: Front Page News, RadCom Plus