This rugged power supply is based on the popular LM338 3-pin voltage regulator. The LM338 is capable of supplying 5 A over an output voltage range of 1.2 V to 32 V with all standard protections like ...

'kv4p HT' is an amateur radio transceiver that can be used in combination with an Android smartphone, and can send and receive voice and text messages. kv4p HT is developed with all open source ...

So far in this series, everything we’ve covered has been geared around the cheapest and easiest possible means of getting on the air: getting your Technician license, buying your first low-end ...

While working in the Amateur Radio department at Heathkit, I was given the task of seeing a new two-meter ham transceiver through the system. The kit design had already been finalized, but the project ...

In a recent article, I lamented my distaste for carrying on the classic amateur radio conversation — calling CQ, having someone from far away or around the block call back, exchange call signs and ...

Well before the days of the tweet and the status update, people communicated with each other over sweeping distances by quite literally harnessing the earth's magnetic field to send messages via radio ...

If you're not a subscriber to the magazine, pick up this latest issue featuring Amateur Radios on newsstands mid-December, or buy a single copy in our on-line store. Both digital and print copies are ...

On the pulse: India has around 16,000 HAM radio operators. Raajan / Mint Simply put, any amateur radio is referred to as “HAM radio” and the operators are called “Hams”. By definition, the term ...