Open-Source passive radar taken down for regulatory reasons
KrakenRF team has stumbled into an arms-trafficing legal roadblock for their KrakenSDR-based passive radar code.
Hack A Day

Turn a 20+ year old Yaesu FT-817 into a CW mean machine
It was quickly becoming clear to me that my humble FT-817 couldn’t cut the mustard in the world of serious CW operating.
Ham Radio Outside the Box

FCC OKs Ham-Military QSOs for Pearl Harbor Day
The FCC has approved an ARRL request to permit contacts to be made between amateur stations and military stations.
CQ Newsroom

Can you handle yet another ‘OTA?
Coming soon to a body of fresh water near you.
AE5X

40 MHz beacon in Denmark off air due to electricity costs
OZ7IGY has an annual electricity bill of more than 2,800 EUR.
EI7GL

FCC Commissioner advocates for preservation of AM Radio
FCC Commissioner Nathan Simington said AM radio is an “indispensable resource.”
Radio World

Turning a trailer wiring harness into ready-made ground radials
Now we have four 25 foot radials. Bonus was all were different colors. Easy to untangle.
QRPer

Raspberry NOAA V2 Edition 2023 image released
Raspberry Pi automated NOAA and Meteor weather satellite capture.
RTL-SDR.com

How to repair a broken solar panel
I learned that solar panels have bypass diodes and that if one fails, it will cause reduced output on a solar panel.
Mikes Tech Blog WB8ERJ

222 MHz: Is anybody there?
Amateur Radio on 222 MHz has endured several reallocations and other changes through the years.
On All Bands

Video

Building your own electric motor
Hannah Fry delves into the inner workings of electric motors.
BBC

Innovative use of screwdriver antenna
Would counterpoises work better if the radials where pointed down at a 45 degree angle?
David Casler

SKYWARN Recognition Day set for December 3
The annual SKYWARN™ Recognition Day (SRD) on-the-air activity will take place Saturday.
ARRL

Digital Library of Amateur Radio & Communications surpasses 25,000 Items
DLARC has quickly grown to more than 25,000 items, including Ham Radio newsletters, podcasts, videos, books, and catalogs.
DLARC

Survey: How do you find new nets?
We’re researching how the Ham Radio community discovers nets. All information is anonymous.
Amateur Radio Weekly

HF & VHF Ocean Radars – 26 MHz to 43 MHz
Ocean radars measure ocean currents by emitting radio waves from shore-based transmitting antennas.
EI7GL

Decoding the Artemis I Orion vehicle
Seven hours after launch, I used two spare antennas from the Allen Telescope Array to record RF signals from Orion and some of the cubesats.
EA4GPZ / M0HXM

Lithium batteries in the cold: A guide
As a lithium battery cools, the chemical process that creates electricity slows down and the internal resistance of the battery goes up.
Off Grid Ham

The Luxemburg-Gorky effect
A phenomenon of cross modulation between two radio waves.
The SWLing Post

Stand alone SSTV camera
Despite the crude nature of SSTV it works surprisingly well.
Dzls Evil Genius Lair

FUNcube-1 (AO-73) now celebrating nine years in orbit
It has now transmitted more that 16 million data frames.
AMSAT-UK

Video

Exploring a 1 million Watt FM tower
Tour the super tower in Crestwood, MO, serving the entire St. Louis metro area.
Geerling Engineering

DIY sand battery
The theory, practice, and use
Robert Murray-Smith

Iowa Marine Mobile
Had a lot of fun experimenting RMOOTA (Random Metal Objects On The Air) with the boat today.
K0KLB