“Automatic Gain Control” is the topic of the latest (February 1) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-million downloads since its debut in April 2016 attest to the podcast’s popularity.
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.
Equipment
FLEX-1500 – Software Defined Radio
The Entry Level QRP Software Defined Radio and Ideal IF Deck for VHF-Microwave Operation The FLEX-1500™ is a low-cost, low-wattage SDR that is… Read more
TH-D74A KENWOOD D-STAR HT (144/220/430MHz) – Test Report
TH-D74A KENWOOD D-STAR HT (144/220/430MHz) KENWOOD D-STAR HT (144/220/430MHz) FCC Part15B(CSR) TEST REPORT FCC ID: K44440900 This device is certified;… Read more
5W CW Transceiver kit assembly instructions – QRP Labs
Easy to build, single-board design, 10 x 8cm, all are controls board-mounted Professional quality double-sided, through-hole plated, silk-screen print… Read more
New SP-38 External Speaker for the IC-7300, Coming Soon!
Icom are introducing a new external speaker for its revolutionary IC-7300 Software Designed Radio. The new SP-38 complements the appearance of the IC-… Read more
Elecraft KX2 – Manual , DataSheet and Block Diagram
Elecraft KX2 An 80-10 m SSB/CW/Data station that fits in your pocket! Our KX2 “stealth” transceiver can go wherever your imagination takes you. Thank… Read more
Review
Luiton LT-898UV FM Mobile Transceiver – Ham Radio Q&A
“Watch my product look and unboxing of the Luiton LT-898UV FM Dual Band transceiver. The radio is part of the new generation of mobile/base radi… Read more
Installation and Review of the Ameritron RCS-8V Remote Coax Switch
Ameritron’s Remote Coax Switch lets you remotely switch up to five separate antennas using one inexpensive small control line (like standard telephone… Read more
KN-Q7A SSB 20m QRP Ham Radio Transceiver Kit
KN-Q7A SSB 20m QRP Are you tired of building pixie kits, rockmites, and other entry levelham radio transceivers that just end up sitting on the shelf… Read more
SunSDR2 Pro review by ZL3DW
First impressions First impressions, the radio arrived very well packed. It was double boxed with the radio box inside a standard DHL box. There was a… Read more
Baofeng BF-F8HP Radio Review
Baofeng BF-F8HP “The following video is a detailed look at the Baofeng BF-F8HP dual band portable two-way radio. Topics covered in this v… Read more
Antenna
Introducing the SteppOut Vertical High-performance 1/4-wave HF Antenna From 14 to 30 Mhz By Bill, AA4BQ
From price to performance, the SteppOut Vertical is a true 1/4-wave vertical for 20-10m and for under $50! Let’s have some fun. The end product… Read more
Which is better: Vertical or Dipole?
Vertical or dipole? Which is better for you? Antenna modeling software (EZNEC+) helps answer the question! Read more
The 10/15/20 Meter Trap Vertical Antenna
“This antenna project came out very nice. It’s a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 met… Read more
ULTRA LIGHTWEIGHT D-HEXPEDITION PORTABLE HEXBEAM
The worlds lightest commercial G3TXQ Hexbeam at only 6KG specially designed with DX-peditions in mind. Main antenna features: THIS IS NOT A KIT, ready… Read more
CHAMELEON ANTENNA Portable HF Antennas
CHAMELEON ANTENNA Portable HF Antennas are made with the finest materials available. They can be used for multiple purposes such as Base Station, Port… Read more
Review
The TAK-Tenna Review – A Limited Space HF Antenna
“As you may know, a big percentage of this web site is dedicated to building antennas and not buying them, but sometimes an antenna comes along… Read more
DV4home – Basic setup and menu navigation
This is the part 1 video of the DV4home, showing the basic setup and menu navigation. Read more
Elecraft KX3 Manual Español and English
El KX3 es un transceptor compacto todo modo, 160-6 metros, que es ideal tanto para los nuevos operadores como para los expertos. Sus características ú… Read more
Icom RS-BA1- Installing & Setting up Remote Control for your IC-7300
Our friends at the TX Factor have produced a video that logically goes through the step by set process of remote controlling an Icom Amateur radio, mo… Read more
Yaesu FT-991 Overview with Steve Venner at ML&S
Yaesu FT-991 Steve Venner – G0TAN – takes an in-depth look at the features and functions of the Yaesu FT991 Muti-Mode Transceiver. The Yae… Read more
Digital Modes
Quicker-Turnaround Digital Modes in Experimental Stage for WSJT-X Suite
Recent sporadic-E propagation openings on 6 meters and elsewhere have pointed up the need for a digital mode having faster turnaround time than curren… Read more
Raspberry Pi Ham Radio SSTV
In this project the Raspberry Pi with the PiCam is used as a wireless camera which can transmit images over long distances, usually hundreds of meters… Read more
ARRL LOTW now accept FT8 Mode
Aug 14, 2017: Update to TQSL configuration file released (config.xml v11.1) — Config.xml version 11.1 has been released. This is an update relea… Read more
App – Mobile
AmsatDroidFree now open source
AmsatDroidFree satellite tracking App for Android devices is now open source. This App predicts future passes for amateur radio satellites for a speci… Read more
What is Echolink? Ham Radio 2.0: Episode 56
Mark Goodrum, W5MHG, discusses Echolink for Ham Radio at the Duke City Hamfest Read more
DroidRTTY – RTTY for Ham Radio App Android
Ham Radio App DroidRTTY is an application to decode and encode Ham Radio RTTY with the build in microphone/speaker or wired to your radio. A wa… Read more
The RS-MS1I APP is now available via the iTunes store
Description Functional overview of the application DR functions You can use some transceiver’s DR functions. Share pictures Send and receive vo… Read more
Tutorial – Using the new routing function in RT Systems featuring RFinder
Once again RFinder and RT Systems have partnered to kick radio programming up a notch. This tutorial will show you how to get the most o… Read more