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QST Magazine said, We have the hardest T-Hunts in the Country

The resource details the construction of a homebrew 50-watt FET amplifier, based on Don W6JL's _QST Homebrew contest_-winning design from 2009. It functions as an afterburner for QRP transceivers, providing a **12dB** power lift. The amplifier utilizes IRFZ24N FETs and covers the 80, 40, 30, and 20-meter bands, with the 20m LPF extending to 17m. Key technical aspects include an FT37-43 transformer for the input network, a relay-switched 3dB pad for lower bands controlled by an _Arduino Nano_, and an RF-actuated T/R switch. The LPF board integrates four relay-switched filters rated for 50 watts, using capacitors with a minimum 250VDC rating. Performance measurements indicate a power gain ranging from **4.4dB** on 20m to 8.1dB on 80m, with a required drive power of approximately 5 watts. The article also discusses thermal management, current limiting considerations, and component sourcing.

Learn morse code with morse machine, A Fully Automatic Morse Code Teaching Machine first described in a May 1977 QST. Free for Windows MacOS Linux and DOS

QST Article on what you should know about matching networks for class C RF power amplifiers

Understanding Amateur Radio NVIS Antennas and Propagation, derived from The ARRL Antenna Book and QST Articles

This QST article describes the electrical and mechanical design process for two LPs that cover the HF bands from 10-30 MHz

Sometimes we need a little more output filtering than traditional designs offer. Look at a new filter that can give you that extra boost. QST article by W3NQN

QST Magazine Product Reviews - Key Measurements Summary - HF-Transceivers or Receiver and Linear Amplifiers

QST Magazine, 1991 July, review of the Kenwood TS-850S 160-10 Meter Transceiver

Notes on using the QST propagation charts to determine propagation conditions

Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019

Interface APRS to a weather station

WR1B review of the Kenwood TS-570D on QST Jan 1997

Technical Correspondence, QST, July 1990 - Why even "perfect" phased array element currents don't produce perfect patterns.

Balanced feed with coaxial line by John F. Clemens W9ERN

Clean Up Your Signals with Band-Pass Filters

Experiences with the end-fed dipole based on the concepts presented by J. Taylor in an article titled RFD-1 and RFD-2: Resonant Feed-Line Dipoles in QST. August 1991.

Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern

Solar Power for Your Ham Station, It is Easier Than You Think QST article April 96 by KE0OG via Repeater-Builider.com

October 2003 QST article on working digital mondes with sound card interfaces

VHF UHF Microwave EME Standings, a Who's Who on top in USA

A look behind the scenes, learn how the ARRL laboratory evaluates new products, and what all those numbers mean to you by WA1SVF

This is a QST Article published in January 1982 by W1FB D. Demaw and HH Beverage and is a complete review of the original article published in 1922, which updates and reivew the beverage antenna theory and developlment, explaining the antenna design of transformers and gives accurate reports on antenna general performance.

Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM

QST Green Radio Round-up from April 2006

A december 2003 QST article to Build a condenser microphone that will perform like the costly commercial units by KT4QW

How to make proper maintenance of your antenna. Fighting Antenna Corrosion is a QST article published in 1993 that helps on antenna maintenance works

This version of the broadband hexbeam is based on the work of Hunt G3TXQ, HB9MCZ, and Shoemaker K4KIO. EZNEC model is based on a wider element spacing than the version published in QST by K4KIO

Kenwood TS-590S QST review comments and table comparison vs Elecraft K3

Exploring these mysterious transmissions and how their strong following has created a niche in the community. Free article in PDF Format from QST November 2019

Original article was in December, 1986 QST

ALS-600S review, an abbreviated version of this review first appeared in the March 2005 issue of QST. See QST for lab test results.

A Progressve Communications Receiver by W7ZOI and K5IRK. First published in the November 1981 QST

Taken from April 1935 issue of QST page 60 where there is a short article on the origin of 73

QST article from May 1994 about history of call signs from the very beginning to present system. Article explains call sign allocations, call areas, prefixes for novices and prefixes like K WA WB WD, callsigns during and after the world war II and other curiosities on US Call signs.

Details on projects by WA3TFS published in QST magazine over the past few years. Includes an online shop with several ham radio kits, circuit boards, simple SDR transceivers

Review of 6 QRP CW transceivers by AE5X published in QST December 2000

Rotatable Antenna with Phased Elements based on the orignal design concept of HB9CV antennas, is considered to have an higher gain than standard quad antennas. The Swiss Quad Antenna does not need any spreader or boom.

LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz

A light and sturdy Quad for 10 and 15 meters. Basic Quad antenna design considerations. Building and assembling a dual band HF QUAD antenna, designing and joining cross-arms and boom, assembling spreader and element wire installation notes. QST article.

TYT MD-2017 Dual-Band Analog and DMR Handheld Transceiver Reviewed by Pascal Villeneuve, VA2PV

WSJT New Software for VHF Meteor-Scatter Communication QST Article December 2001 by K1JT

An inexpensive spectrum analyzer for the radio amateur, with a respectable performance and a quite good dynamic range. Schematic and basic information on how spectrum analyzers works.

Are you confused when it comes to using toroids? The tips given in this article may simplify your next project. Comprehensive article about choosing the proper toroid.

A little gadget was found in an article in QST, made with 1 pair of powerpole connectors a resistor and two leds

Array Solutions AIM 4170 Antenna Impedance Meter, QST Review

The TBJ-1 – a triband base antenna was published in March 2017 QST. This antenna covers 2M/220 MHz/70cm in one 6ft 3/4 inch PVC pipe and requires no radials.

A QST Article published in November 1922 is about the origin of Beverage antennas, an unidirectional antenna type that was discovered and experimented for the first time in that period. This article is the introduction to beverage antenna theory, by the homonimous autho H. H. Beverage.

The Necessary Bandwidth for CW Signals By George Grammer W1DF

Yaesu FT-710 AESS MF/HF and 6-Meter Transceiver review on QST