Sky Anchor Puts Radios Up High, No Tower Needed

When it comes to radio communications on the VHF bands and above, there’s no substitute for elevation. The higher you get your antenna, the farther your signal will get out. That’s why mountaintops are crowded with everything from public service radios to amateur repeaters, and it’s the reason behind the …read more

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Beat Your Coat Hangers into Antennas, Not Plowshares

If you are looking for a fun project while you are cooped up and you have some spare coathangers, why not try this 4-element Yagi antenna (PDF)? [Pete N8PR] showed it off at his local ham radio club and it looked like something good for a lazy afternoon. If you …read more

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The Rusty Nail Award for Worst WiFi Antenna

In general, you get what you pay for, and if what you pay for is a dollar-store WiFi antenna that claims to provide 12 dBi of signal gain, you shouldn’t be surprised when a rusty nail performs better than it.

The panel antenna that caught [Andrew McNeil]’s eye in a …read more

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Lock Your Keys in the Car On Purpose with Aluminum Foil

[TJ] is a surfer, and drives his car to get to the beach. But when he gets there he’s faced with a dilemma that most surfers have: either put his key in your baggies (shorts) or wetsuit and hope it doesn’t get lost during a wipeout, or stash it on …read more

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A Dangerous Demonstration of the Power of Radio

Terrestrial radio may be a dying medium, but there are still plenty of listeners out there. What would a commute to or from work be without a check of “Traffic on the Eights” to see if you need to alter your route, or an update of the scores from yesterday’s …read more

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NASA is about to stop talking to Voyager 2 for almost a year

Nary a month since NASA managed to reboot Voyager 2 after a technical malfunction, it looks like we’re about to lose contact for almost a whole year. The radio antenna that acts as Earth’s sole transmitter to Voyager 2 will soon undergo important upgra… Continue reading NASA is about to stop talking to Voyager 2 for almost a year

A Patch Antenna Is Just A Rectangle, It Should Be Easy To Design, Right?

If a grizzled RF engineer who bears the soldering-iron scars of a thousand projects could offer any advice, it would be that microwave antennas are not a field to be entered into lightly. Much heartache is to be saved by using an off-the-shelf design, and only the foolhardy venture willingly …read more

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DIY Radio Telescopes Hack Chat

Join us on Wednesday, February 12 at noon Pacific for the DIY Radio Telescopes Hack Chat with James Aguirre!

For most of history, astronomers were privy to the goings-on in the universe only in a very narrow slice of the electromagnetic spectrum. We had no idea that a vibrant and …read more

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