“Listening Outside the Ham Bands” is the topic of the new (April 11) 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 email 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.
Antenna
Building a Delta Loop Antenna For The 30m Band, Part 1.
“Since my 6m Delta Loop seems to work pretty well I decided to build one for the 30m band to be used with my Spiderbeam 12m mast. Unfortunately... Read more
W4OP Loop Antenna
It seems that more and more, amateurs are facing increasingly strict HOAs. This antenna is not designed for the backpacker, but rather for the QRP ama... Read more
7el LFA2 Noise comparison on 50 MHz
VA3NCD had the luxury of being able to install 2 50MHz 7el Yagis for testing one against the other. One an M2 7el JHV, the other... Read more
Skew Planar Wheel Antenna for 435MHz
Antenna for 435MHz Skew-Planar antenna has had little attention in the amateur radio community despite being present in QST by Robert H.... Read more
Equipment
Ailunce HS1 HF SDR HAM Transceiver
Ailunce HS1 Description: Spectrum Dynamic Waterfall Display Multiple Working Modes：Receive Mode, Transmit Mode, TUNE Mode, VFO Mode, SPLIT Mode DSP Di... Read more
GEK SSB HF Transceiver
Project by N.Ganesan & I.Arun Silver series (Low range) for Beginners Gold series (Mid range) for Amateurs Diamond series (High range) for Profess... Read more
Hambuilder HBR4HF 4 Band HF Transceiver
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
Astron Has A New Power Supply, SS-50M-AP First Look
“This is their brand new, up and coming line of switching mode power supplies. Very quick video. But it is the only one in the world on display... Read more
News
Capture the MAGIC of Six Meters — eBook
Have you ever wondered about the “Magic” of Six Meters? After all, you’ve probably pressed the six meter button on your rig and failed to find any mag... Read more
Eastern Iowans Rely On Ham Radio When Severe Weather Strikes
A derecho with winds of 80 to 100 MPH struck eastern Iowa last August, disrupting power and telecommunications for some 400,000 residents. But, as... Read more
David A. Duncan, K7DUN, Wins the January 2021 QST Cover Plaque Award
The winning article for the January 2021 QST Cover Plaque award is “CW-ELMER – An Advanced Morse Code Learning System,” by David A... Read more
ISS SSTV 145.800 FM Jan 28-29
Russian cosmonauts on the International Space Station (ISS) are planning to transmit Slow Scan TV images on 145.800 MHz FM using the SSTV mode PD-120.... Read more
Propagation
The K7RA Solar Update
We just witnessed 12 consecutive days with no sunspots, which many of us found a bit unsettling. But fortunately Solar Cycle 25 activity returned with... Read more
The K7RA Solar Update
Tad Cook, K7RA, Seattle, reports: What happened? Solar Cycle 25 seemed well under way, but no new sunspots have emerged since December 23. The last ti... Read more
