Perspectives

Contents

Perspectives

Contents

Contents

Perspectives

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Perspectives

Contents

Editorial

Table of Contents

Editorial

Table of Contents

Editorial

Table of Contents

Free Article Amateur Portable Radios (Handheld Transceivers): Exposure Considerations Based on SAR, by Richard (Ric) A. Tell, K5UJU

Editorial

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Editorial

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Editorial

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Editorial

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Editorial

Table of Contents

Editorial

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Editorial

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Editorial

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Editorial

Editorial

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Free Sample Article: Building an LDMOS Amplifier with an Arduino Interface by Michael L. Foerster, WØIH

Editorial

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Free Sample Article: Patterns and Polarizations of Modestly-Sized Loop Antennas by Darrel Emerson, AA7FV; G3SYS

Editorial

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Free Sample Article: Receiver Step Attenuator by Scott Roleson, KC7CJ

Editorial

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Free Sample Article: An Unusual Multi-Band WSPR Transmitter by Dr. George R. Steber, WB9LVI

Editorial

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Free Article: "Baseband Quadrature Multi-Band Modulator" by Braddon Van Slyke, AC0ZJ

Editorial

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Free Sample Article: Wide Dynamic Range Field Strength Meter by Thomas Alldread, VA7TA

Editorial

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Free Sample Article: The Story of the Broadband Dipole by Dave Leeson, W6NL

Editorial

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Free sample article: Amplifier Overshoot-Drive Protection by Phil Salas, AD5X

Editorial

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Free Sample Article: Adapt Your Equipment to Operate at Millimeter Waves up to 32 GHz by Euclides Lourenço Chuma, PY2EAJ

Editorial

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Free Sample Article: An Optimized Grounded Base Oscillator Design for VHF/UHF by Ulrich L. Rohde, N1UL and Ajay K. Poddar, AC2KG.

Editorial

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Free Sample Article: High-Power HF Band-Pass Filter Design by Jeff Crawford, K0ZR

Editorial

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Free Sample Article: A Tunable RF Preamplifier Using a Variable Capacitance Diode by George R. Steber, WB9LVI

Editorial

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Free Sample Article:

by James L. Tonne, W4ENE

Editorial

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Free Sample Article: The MSK144 Protocol for Meteor-Scatter Communication by Steven J. Franke, K9AN

Editorial

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Free Sample Article: Automatic Tracking Filter for DDS Generator by Riccard Gionette, I0FDH

Editorial

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Free Sample Article: Improve Performance of Your Octopus V/I Curve Tracer Using a Single Voltage Transformer by Paulo Renato F. Ferreira, PY3PR

Editorial

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Free Sample Article:

The Polar Explorer by Brian Machesney, K1LI and Tony Brock-Fisher, K1KP

Our 300th Issue!

Editorial

Table of Contents

Free Sample Article: Re-Purposing an Obsolete Instrument Enclosure by Scott Roleson, KC7CJ

Table Of Contents

Sample Article: How to Tune an L-Network Matchbox by Charles R. MacCluer, W8MQW

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Sample Article: "Crystal Test Oscillators" by Fred Brown, W6HPH

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Sample Article: Radio Frequency (RF) Surge Suppressor Ratings for Transmissions into Reactive Loads by Gene Hinkle, K5PA

Table Of Contents

Sample Article: 6 m Monoband Conversion for Heathkit SB-1000 Amplifier by Ron Berry, WB3LHD

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Sample Article: Elevation and Pseudo-Brewster Angle Formation of Ground-Mounted Vertical Antennas by Robert J. Zavrel Jr, W7SX

Click here to view errata for the article “Calculation of FM and AM Noise Signals of ColpittsOscillators in the Time Domain” by Dr. Ulrich L. Rohde, N1UL.
 

Table Of Contents

Sample Article: A Digitally Tunable Band-Pass Filter

by Euclides Chuma, PY2EAJ

 QST Companion Article: External Processing for Controlled Envelope Single Sideband

by David Hershberger, W9GR

Letters

2015 Index

Table of Contents

Sample Article: A Frequency Standard for Today's WWVB

 By John Magliacane, KD2BD

This article as printed in QEX has several errors on the schematic diagrams of Figures 7, 12B, 13. and 16. The corrected drawings are included in the article posted here.

Table of Contents

Sample Article: Quality Factor, Bandwidth, and Harmonic Attenuation of Pi Networks,

By Bill Kaune, W7IEQ

Letters

Table of Contents

Sample Article: "An Arduino Controlled GPS Corrected VFO"

By Gene Marcus, W3PM / GM4YRE

Table of Contents

Sample Article: "$25 10 GHz Signal Generator"

By Jeff Wadsworth, KI5WL

 Table of Contents

Sample Article: An Experimenter's Variable Voltage Transformer

By Ted Drell, W5HEU

Table of Contents

Sample Article: A Low Frequency Adapter for your Vector Network Analyzer (VNA)

By Jacques Audet, VE2AZX

 2014 Index

Table of Contents

Sample Article: Controlled Envelope Single Sideband

by David L Hershberger, W9GR

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Sample Article: Hands On SDR by Scotty Cowling, WA2DFI

Letters

Table of Contents

Sample Article: An RF Filter Evaluation Tool by Gary Richardson, AA7VM

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Sample Article: RF Power Amplification Using a High Voltage, High Current IGBT, by Pete Horowitz

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Sample Article:"An 8 Channel Remote Control Antenna Selector," by Michael Dzado, AC0HB

Letters

Table of Contents

Sample Article "A Software Based Remote Receiver Solution," by Martin Ewing, AA6E

Letters

2013 QEX Index

Table of Contents

Sample Article  An Automated Method for Measuring Quartz Crystals by Richard Harris, G3OTK

2013 QEX Index

Table of Contents

Sample Article: A 21 MHz Four Square Beam Antenna

By Garth Swanson, G3NPC

Companion QST article: A 21 MHz Four Square Beam Antenna

Table of Contents

Sample Article: The HF7070 HF/LF Communications Receiver Prototype

by Colin Horrabin, G3SBI

I apologize to Gary Richardson, AA7VM, author of the "cover article" in this issue for having his call sign wrong on the cover and in the "About the Cover" box on the Table of Contents page in the printed magazine. Gary's call is correct in the cover image posted here, as well as on the Table of Contents PDF file. -- Larry Wolfgang, WR1B.

Table of Contents

Sample Article: A Simple Yet Precise Function Generator for the Experimenter

by Rubens Fernandes, VK5FE