Receiving Antennas for the Radio Amateur - Increase Your Stations Receive Capability

ISBN: 1625950780

Author: ARRL Inc.

Condition: New

Transmitting and Receiving Antennas Have Different Jobs to Do.Although the fundamental characteristics of antennas apply to both transmission and reception, the requirements and priorities of receiving antennas can be vastly different from those of transmitting antennas. Receiving Antennas for the Radio Amateur focuses entirely on active and passive receiving antennas and their associated circuits. There are relatively few cases where a radio amateur cannot benefi t from a separate, well-designed receiving antenna or antenna system. On the low bands, including our new allocations at 630 and 2200 meters, heavy emphasis on the receiving end of these radio paths is essential for success.The active antenna holds a prominent position in this book, as it offers good receiving performance while taking up minimal space. Recent developments in radio frequency (RF) semiconductors, especially low-noise RF operational amplifiers, have made a number of previously difficult-to-implement active antenna designs simple to build.Table of Contents:Receiving Antennas are Different!Your Friend, the DecibelThe Preamplifi er ProblemThe Amazing Disappearing AntennaThe Receiving Antenna as aSignal GeneratorThe Quest for Infi nite Power GainThe Role of the Resistor in theReceiving AntennaThe Small Loop AntennaAchieving the Perfect NullYou Can Make AccurateField Strength MeasurementsThe Aperiodic LoopThe Q FactorThe Beverage: In a Class of Its OwnDealing with Non-Reciprocal PropagationThe Evolution of the eXOgon AntennaThe Lowdown on LFThe Random WireArrays and Beamforming NetworksPowering Your Active AntennaDiversity MethodsNVIS Receiving AntennasReceiving Antenna Projects and AccessoriesMaterials and Construction TechniquesOur Two New Bands