“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
MFJ-939I PLUG,PLAY,200W AUTOTUNER, HF – Plug & Play Auto Tuner
Plug & Play Auto Tuner Plug & Play! You won’t even know it’s there . . . MFJ-939I/K/Y automatically tunes your antenna as you tune your radio.... Read more
Electraft W2 Wattmeter
Power & SWR LED bar graphs with peak/hold Four power ranges with auto/manual selection Up to 2 remote sensors with selection switch Compact size:... Read more
238C 2KW High Power Antenna Tuner
238C 2KW High Power Antenna Tuner Model 238C now features a large cross needle SWR and peak reading power output meter. Model 238C uses our tri... Read more
Icom – Download 2014 Amateur Product Catalog (PDF)
Icom – Download 2014 Amateur Product Catalog (PDF) Read more
Codan 2110M – HF Transceiver – Military
Frequency rangeTransmit: 1.6 to 30 MHz, 10 Hz steps Receive: 0.25 to 30 MHz, 10 Hz steps Frequency Stability: ±0.5 ppm from –30°C to +60... Read more
Review
![Xiegu X5105 [ First Video´s]](http://qrznow.com/wp-content/uploads/2017/01/15977553_1934328260128796_9122523868845693855_n-1-190x122.jpg)
Xiegu X5105 [ First Video´s]
X5105 is a highly portable transceiver working at HF+6m band, with a built-in power output of 5W. Technical features: double-conversion superheterody... Read more
Alpha Mag Loop Review, Interview with K7AGE at Pacificon – K6UDA Radio Episode 31
Here’s the review of the Alpha Antennas Magnetic Loop. Stay Tuned for the big 3 way shootout with the Chameleon P Loop & the Alexloop. I... Read more
![TERMN-8R Radio: Third Party Review and Walkthrough [ Video ] – Anytone](http://qrznow.com/wp-content/uploads/2015/03/51StQw466JL-190x122.jpg)
TERMN-8R Radio: Third Party Review and Walkthrough [ Video ] – Anytone
Anytone TERMN-8R Radio: Third Party Review and Walkthrough Read more
ELAD FDM-DUO SDR QRP Quick Tour and Review
FDM-DUO is a SDR tranceiver that offers the possibility to operate STand-alone like traditional radio or attached to a Personal Computer discovering t... Read more
ASSEMBLY “N” CONNECTOR FOR ULTRAFLEX 13 MKII 720p
“N” type connector assembly instructions Read more
Antenna
OMNI-TILT™ Vertical Antenna Tilt Bases DXE-OMNITILT-2P
DX Engineering OMNI-TILT™ Vertical Antenna Tilt Bases are a completely new design that incorporates features that make this Tilt Base a ‘must ha... Read more
CX-AUTO Switch – Kessler Engineering, LLC
he CX-AUTO was designed to satisfy the many requests from AT-AUTO owners for additional coaxial outputs. It does that quite well and more! The CX-AUTO... Read more
GigActiv GA3005 Ultra Wideband
GigActiv GA3005 Ultra Wideband Frequenzy range : 9 kHz – 3 GHz Power Supply: 5,5V – 15V Gain: + 3dB Upper Frequency Limit (-1db): 3000 MHz... Read more
NTE Low Temp Solder Wire Connections
DX Engineering carries the NTE Low Temp Solder Wire Connectors. All you need is a heat gun to make solder connections between wires. Four sizes for wi... Read more
How to install a Horizontal Waller Flag antenna at 150 foot
The Horizontal Waller Flag antenna is a produced and sold by Carlos N4IS http://top-beam.com/ The boom on this one is 44 feet long. Interlaced with th... Read more
Review
Hamfest 2017 – Preview of the Icom IC-7610 and IC-R8600 rigs
In part one of our reports from Hamfest 2017 we have a sneak preview of the Icom IC-7610 and IC-R8600 rigs. We meet the new owners of PW Magazine, and... Read more
Review of Alpha Loop and Buddipole Buddistick
“Hey Oggies, Oggie Rodney Johnson, KAØUSE, loaned me his Alpha Loop antenna and his Buddipole Buddistick. Both antennas are pretty good out away... Read more
Yaesu FT-450D : Getting Started and Overview
Yaesu FT-450D Read more
Kenwood TH-D74 – Review and Quick Tour (4K) – English version
“This video is a quick tour, but complete, of the Kenwood TH-D74. If you have any questions or comments, don’t hesitate to ask via the comments... Read more
TenTec 506 Rebel Transceiver – ARRL – QST Magazine
The Rebel 506 utilizes a chipKIT Uno32 prototyping board which give users access to an Arduino based programming environment. With its 32 bit computin... Read more
Digital Modes
Candidate Release: WSJT-X Version 1.9.0-rc3
Release: WSJT-X Version 1.9.0-rc3 March 18, 2018 ——————————— Changes from WSJT-X Ver... Read more
A New FT8 with Rag Chew Abilities ( FT8CALL )
FT8 has taken over the airwaves as the digital communication mode for making QSOs over HF/VHF/UHF. The mode has been widely popular as the latest offe... Read more
Second Test of FT8 DXpedition Mode Set for April 7
The second public test of FT8 DXpedition Mode will take place on April 7, and all radio amateurs are invited to participate. WSJT-X Developer Joe Tayl... Read more
Caution Urged in Using High Duty Cycle Digital Modes via Satellite
A report in ANS-288 discussed an experiment operating with the WSJT-X FT8 digital mode via satellite. Satellite operators have gained more experience... Read more
App - Mobile
SmartSDR for iOS v2.1.0 Now Available
FlexRadio Systems announces the release of SmartSDR for iOS v2.1.0 is now available for download or update from the Apple App Store. This App requires... Read more
SmartSDR for iOS v2.6.2 Now Available
FlexRadio Systems announces the release of SmartSDR for iOS v2.6.2 is now available for download or update from the Apple App Store. This App requires... Read more
Amateur Radio Ringtone from NASA
Download NASA Sounds Here’s a collection of NASA sounds from historic spaceflights and current missions. You can hear the roar of a space shuttl... Read more
US Amateur Radio Band Plan for Android
US Amateur Radio Band Plan A clean native app that’s sole purpose is to provide amateur radio operators a simple and easy to use f... Read more
RFinder – The World Wide Repeater Directory now free trial on Android!
In order to support the proliferation of third party app stores worldwide, we have now released RFinder on Android as trialware! Just go download it f... Read more