“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-993B DUAL POWER AUTO TUNER , 300/150W, 1.8-30MHZ
MFJ IntelliTuner Automatic Tuner Automatically tunes unbalanced/balanced antennas . . .Ultra fast . . . New 20,000 memories . . . Antenna Switch . . .... 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
PowerGenius XL™ – FlexRadio 1500W Solid State Amplifier
The PowerGenius XL is a 100% duty cycle, legal limit (1500W ICAS) 1.8-54 MHz RF amplifier intended for both amateur and government use. It incorporat... Read more
KX3 Low-rider Radio Stand
Product Description KX3 Low-rider Radio Stand This lovely stand has been designed for KX3 owners who don’t have the Elecraft paddle and want a l... Read more
DU3500AL Automatic Tuner by HA8DU
DU3500AL Automatic Tuner by HA8DU Frequency range : 1,8-30MHz Matching range : max power 5:1 SWR 1,8MHz 35 ohm – 150 ohm 3,5MHz ... Read more
Review
Universal Radio presents the Yaesu FT-65R
The FT-65R is a very compact, ruggedly constructed Handheld VHF/UHF with three selectable power settings 5W / 2.5W / 0.5W allowing each user to select... Read more
How to update your IC-7300 to the latest firmware?
Short video showing the steps in the firmware upgrade process of the Icom IC-7300 HF radio. Make sure you read section 15 of the full owner’s ma... Read more
Portable Ham Radio Tips & Tricks #1
“Hi folks, I’ve had many questions since I started my YouTube channel awhile back on how to operate Ham Radio out in the field. The 3 prim... Read more
Raspberry Pi 3 projects for Ham Radio with 7 inches touchscreen
Raspberry Pi for Ham Radio This is a Raspberry Pi 3 kit with a 7 inches touchscreen that I build in about 30 minutes Raspberry Read more
Using the MFJ-1788 Mag Loop Antenna Horizontally
“I test the MFJ-1788 in a horizontal position on my rooftop. The performance is great on 20m. I used an MFJ Cobweb antenna as the comparison ant... Read more
Antenna
Inac AH-1430 (20, 17, 15, 12, 10 m band) – Antenna
AH-521, is a halo antenna of small size but high performance. Supports an RF level between 140 and 210 W. Covers bands used between 12 and 30 M... Read more
Momobeam MB17 10/15/20/40 m – Yagi Antenna
MB17 10/15/20/40 is every contester’s dream quad-band trap-less yagi with compact design, – high power handling, – large bandwidth thanks... Read more
Modeling Common Dipole Variations
“Viewers queried me about what happens when you shorten a dipole by letting the ends hang down, or have to put up a dipole that can... Read more
Attic Mounted HF Loop Antenna In HOA, Does It Work?
“I went to my friends house to check out his setup and get him up and running on some HF digital modes. A lot of hams are struggling in an HOA w... Read more
2018 QST Antenna Design Competition Winners Announced
ARRL has announced the winners of the 2018 QST Antenna Design Competition. “Dozens of entries were received, but only three could win,” said... Read more
Review
![IC-7300 [ Downloads ] Instruction Manual and Brochure](https://qrznow.com/wp-content/uploads/2016/09/ic7300_8-190x122.jpg)
IC-7300 [ Downloads ] Instruction Manual and Brochure
IC-7300 Video Review IC 7300 Download´s Read more
Kenwood THK20A Transceiver – ARRL Video Review
A powerful communications tool in every sense, KENWOOD’s new TH-K20A/K40A radio offers 5.5 watts of RF output to ensure reliable performance. Numerous... Read more
The Double Bazooka Antenna – A Review
The Double Bazooka Antenna – A Review Read more
The Siru Innovatios SDR20 adds new features
New features * Smooth zoom in FFT/waterfall view * Adaptive menu * Frequency memory with snapshot pictures of signals * Sliding effect between views *... Read more
Yaesu FT-891 Initial Impressions
“Introducing the Yaesu FT-891! My new portable HF Transceiver for Ham Radio! The FT-891 is a 100w rig for HF-6m at just shy over 4 lbs. A super... Read more
Digital Modes
JTDX – Videos and Guides – FT8- JT65 – JT9 – T10 – WSPR
JT DX JT65 – JT9 – T10 – FT8 – WSPR Guides JTDX_User_Manual_EN_2018_01_08.pdf – (English language by VK7YUM with... Read more
JS8Call 0.8 Released – Refinement, Group callsigns
JS8Call Download “Hi folks! Happy to announce 0.8 of JS8Call. This is a backwards incompatible release (which is the primary reason for it being... Read more
World Digital ATV QSO Party Marks 5th Year
The World Digital Amateur Television (DATV) QSO Party will celebrate its 5th year when it gets under way August 21-22. Organizer and anchor Peter Coss... 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
Getting Started With Digital Modes
This comprehensive video explains the concept behind amateur radio digital modes and describes the hardware and cabling required to get started. This... Read more
App - Mobile
Free App Allows Blind Hams to Work PSK31
A free, new app — Accessible Digipan — has been released that allows blind hams to operate PSK31. The download includes the app, audio tutorials, deta... Read more
N1KDO’s LoTW Look – Android
This application allows Amateur Radio Operators to browse and search their Logbook of the World (LOTW) QSL confirmations on their handheld de... Read more
RUMlogNG2Go for iOS version 3.3 now available
Thomas Lindner, DL2RUM, is happy to announce the availability of version 3.3 of his RUMlogNG2Go logger for the iPhone and iPad. RUMlogNG2Go can be do... Read more
RS-MS1A – Remote Control Android App
Ray Novak and George Thomas show you how to control the ID-51A with the RS-MS1A Android app. Read more
EchoLink for iOS version 2.6.14 is now available
EchoLink for iOS version 2.6.14 is now available in the App Store. This is a 64-bit build that is fully compatible with iOS 10 and modern iOS devices.... Read more
