“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
All-band HF direct conversion transceiver QRPver DC-3001 Minion Mini
Transceiver direct conversion, short-wave, all-band. QRPver Minion Mini DC-3001 This is a small-size multi-band short-wave QRP transceiver. The transc... Read more
BEKO HLV-1250 2 Meter RF Power Amplifier with 1,250 Watts RF output
Designed for Weak Signal, Tropo Scatter, Meteor Scatter, Digital, & Contest Operation! The BEKO HLV-1250 is a special 25th Anniversary Amplifier c... Read more
Ten- Tec 507 Patriot – Open Source Arduino-based SSB/CW QRP Transceiver
The 507 Patriot utilizes a chipKIT Uno32 prototyping board which give users access to an Arduino-based programming environment. With its 32-bit... Read more
QRP – Multi-band, Direct Conversion CW Transceiver
Specifications Recever: Rx current: 80 M : 70 ma, 160 M : 100 ma Sensitivity: ~ -90 dBm (5 uV) Three audio bandwidth settings Transmitter: 80 M... Read more
CW Decoder – Inac
decoder translates and displays the tones of a telegraph or teletype signal on a display of alphanumeric characters. Only required to run a connection... Read more
Review
New Design QYT KT-8900D Dual band Quad Display Mobile with Big LCD Screen
QYT KT-8900D Dual Band Quad-standby Colorful Screen Mini Mobile Vehicle-mounted Radio TX & RX 136-174MHz & 400-480MHz 200 Channels FM Radio Fe... Read more
YAESU FT 891 Unpacking and First Look – Waters & Stanton Ltd
FT-891 HF+50Mhz ALL MODE MOBILE TRANSCEIVER The FT-891 HF All Mode Mobile Transceiver once again continues Yaesu‘s legacy for legendary receiver... Read more
Antennas for Portable Amateur / Ham Radio Operation – ICQ Podcast Episode 276
“In this episode, Martin M1MRB is joined by Leslie G0CIB, Edmund M0MNG, Matthew M0NJX and Bill N3JIX to discuss the latest Amateur / Ham Radio n... Read more
Review of the Commradio CR-1A
“Here’s a brief tour and review of the CR-1a from Commradio. This SDR has excellent build quality and performance. The price is moderately... Read more
Dipole Antenna Center Insulator – Ham Radio Basics by W6LG
Jim, W6LG shows the PVC plumbing parts, coax connector and screw eyes to make a dipole center insulator. Read more
Antenna
AG6IF BUILT 3DFL, 2 METER FULL WAVE HAM RADIO ANTENNA, WORKS ON 440 70CM ALSO
You are looking at a AG6IF built 2 meter ham radio antenna. 3 dimensional folded Full wave loop design. Rugged and solid with soldered copper connect... Read more
Comet mobile antenna of 430MHz band – ASF-430
Comet is the 19th Kansai first exhibition was of the amateur radio festival venue, fin-type mobile antenna · ASF-430 of 430MHz band. Adopted wa... Read more
ALFASPID BIG RING-01 ANTENNA ROTATORS (ROHN 45 / 55)
Heavy Duty, Super Accurate (Under 1 Degree Resolution) Tower Mounted Ring Rotator for Rohn 45 / 55 Towers – NEW FOR 2015! o you want to g... Read more
20m/40m Stealth Bazooka Flagpole Antenna
No longer does the Amateur Radio Operator need to be limited by homeowner restrictions of outside antenna construction! The revolutionar... Read more
G8JNJ Broadband HF Vertical Antenna
G8JNJ Broadband HF Vertical Antenna – Requires no tuner The following notes show the design and construction of a Broadband HF Vertical antenna... Read more
Review
POWER POLE DC OUTLET – MFJ 1124 , 1106 , 1126, 1128, 1129, 1104
POWER POLE DC OUTLET – MFJ Read more
Review of Radioddity GD-77 DMR Tier 2 Handheld
Dual Band & Dual Time Slot: VHF 136-174MHz, UHF 400-470 MHZ; GD-77 has both Tier I & II and is compatible with Motorola and other DMR radios.... Read more
Universal Radio presents the update to the Yaesu FT-991, the FT-991A
Eric from Universal Radio discusses the important update to the Yaesu FT-991, the new Yaesu FT-991A model. This model includes a live waterfall while... Read more
![Baofeng BF-F8HP Dual Band UHF/VHF – 8 Watt output [ Video ]](http://qrznow.com/wp-content/uploads/2015/07/717L2IOzOVL._SL1500_-190x122.jpg)
Baofeng BF-F8HP Dual Band UHF/VHF – 8 Watt output [ Video ]
Baofeng BF-F8HP Read more
Digital Modes
FT8Call 0.5 Released – New features, a MacOS build, APRS.fi spotting, and more!
“Howdy Folks, I’m excited to bring you the next development version of FT8Call, version 0.5, and boy do I have some fun stuff included i... Read more
Release: WSJT-X Version 1.9.0-rc4
Changes from WSJT-X Version 1.9.0-rc3 include the following: – Corrected a number of flaws in Fox and Hound behavior, FT8 DXpedition Mode... Read more
EURAO Party – Autumn 2014: be digital, explore 30m
The European Radio Amateurs’ Organization, together with the 30 Meter Digital Group , announce a new party on the air, this time with the... Read more
Fldigi v3.23.16 now available
The hard-working development team led by W1HKJ have announced the release of Fldigi v3.23.16. This version of Fldigi is a maintenance release with a v... Read more
New version of FT8CALL released
“Alright. Enough jib-jab. Here are the notable changes in 0.6: * Version 0.6 is not backwards compatible with 0.5 so you should upgrade ASAP. *... Read more
App - Mobile
CommCat 4 for Radio Control and Logging!
CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with... Read more
APRSdroid – APRS for Android
What is APRSdroid? APRSdroid is an Android application for Amateur Radio operators. It allows reporting your position to the APRS (Autom... Read more
RFinder – The World Wide Repeater Directory now has Jamming Reports!
RFinder now includes the ability to make jamming reports. This is already available in RFinder Android and should be available on iOS devices by Dayto... Read more
AmsatDroid FREE – APP
This software predicts future passes for amateur radio satellites for a specified location and period of time. Basic features: – Calculate passe... Read more
Ham Radio Prefixes – Android App
Enter a call sign and get immediately all the geographical informations (country, ITU zone, CQ zone, GMT). Google Play: https://play.goo... Read more
