Ground Plane Antennas

“Ground Plane Antennas” is the topic of the new (December 20) episode of the “ARRL The Doctor is In” podcast. Listen…and learn!Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like!

Every 2 weeks, your host, QST Editor-in-Chief Steve Ford, WB8IMY, and the Doctor himself, Joel Hallas, W1ZR, will discuss a broad range of technical topics. You can also e-mail your questions to doctor@arrl.org, and the Doctor may answer them in a future podcast.

Enjoy “ARRL The Doctor is In” on Apple iTunes, or by using your iPhone or iPad podcast app (just search for “ARRL The Doctor is In”). You can also listen online at Blubrry, or at Stitcher (free registration required, or browse the site as a guest) and through the free Stitcher app for iOS, Kindle, or Android devices. If you’ve never listened to a podcast before, download our beginner’s guide. 

VHF

The ARRL Repeater Directory (Pocket-size)

March 24, 2015 No comments

  The ARRL Repeater Directory (Pocket-size) The best directory of frequencies for repeaters around the country!The ARRL Repeater Directory includ... Read more

Anytone AT-D878UV Dual Band DMR HT with APRS

December 26, 2018 No comments

Anytone AT-D878UV Dual Band DMR HT with APRS   “Brand new from Anytone is the new AT-D878UV Dual Band DMR HT with APRS. This is the first r... Read more

Increase Your Two Way Radio’s Power With The Retevis RT91! 30 Watt Amplifier

August 02, 2018 No comments

This is a portable, lightweight, Wide coverage RF power amplifier for Handheld Radio equipment , proprietary and emerging waveforms. Dual mode for Dig... Read more

Alinco DJ-MD5 Dual Band DMR HT Radio

March 12, 2019 No comments

“Finally one of the “Big 4” manufacturers is making a DMR Radio for Amateur Use. Alinco has done a good job of taking a radio and ad... Read more

Digital Modes

New Ham Shack Part 4, Audio Mixer Installation by K7AGE

July 20, 2016 No comments

In this video I show you how I setup an audio mixer for my ham radio station. I am using this mixer to monitor the audio outputs from my Elecraft K3,... Read more

New “Pre-Release” Version of WSJT-X Includes FT8 Changes

September 06, 2017 No comments

A new “pre-release” version of WSJT-X now is available. This is the Amateur Radio digital software suite developed by Joe Taylor, K1JT, that includes... Read more

ZL1BPU Wins June QST Cover Plaque Award

September 11, 2015 No comments

The winner of the September 2015 QST Cover Plaque award is Murray Greenman, ZL1BPU, for his article “FSQ: Fast, Simple QSO.” The QST Cover Plaque Awar... Read more

A New Spin on JT Alert HRD Logbook and WSJT X

April 11, 2018 No comments

WSJT-X for rig control. There’s no need for HRD rig control to be running. Just HRD Logbook, WSJT-X and JT Alert. Read more

Equipment

PiHPSDR Controller – Apache Labs

September 27, 2016 No comments

The PiHPSDR Controller is a stand-alone interface for the ANAN/OpenHPSDR Hermes SDRs, it is ideal for mobile applications and for users who prefer phy... Read more

Hambuilder HBR4HF 4 Band HF Transceiver

July 25, 2017 No comments

HBR4HF specification Heterodyne 10MHz Xtal filter exciter based on Hambuilder BritX exciter 300-25000Hz audio band pass active filter using NE5532 4 B... Read more

BLA 1000 1KW HF amplifier – RM Italy

April 13, 2016 No comments

RM Italy • Instant use without setup • over 1000 Watts Key-down Output • Instant Bandswitching, no tuning, no warm-up, SWR protected, • Quiet Variable... Read more

MRF101AN: 100 W CW over 1.8-250 MHz, 50 V Wideband RF Power LDMOS Transistor

June 25, 2019 No comments

These devices, MRF101AN and MRF101BN, are designed for use in HF and VHF communications, industrial, scientific and medical (ISM) and broadcast and ae... Read more