Tag: antenna

via HACKADAY: Fully 3D Printed And Metalized Horn Antennas Are Shiny and Chrome

We’ve seen our share of 3D printed antennas before, but none as well documented and professionally tested as [Glenn]’s 3D printed and metalized horn antennas. It certainly helps that [Glenn] is the principal engineer at an antenna testing company, with access to an RF anechoic chamber and other test equipment. Horn antennas are a fairly simple […]

via the ARRL: Storm Takes Down Antennas at Memorial Ham Station on Swedish-Norwegian Border

The SJ9WL-LG5LG Morokulien memorial station on the border of Sweden and Norway is off the air after a large tree, brought down during a severe storm on August 10, caused extensive damage to the station’s antennas. According to one report, the station’s 100-foot tower was broken into pieces after the tree fell across three tower guys. That pulled […]

via HACKADAY: This Mostly 3D-Printed Discone Antenna Is Ready For Broadband Duty

For hams and other radio enthusiasts, the best part of the hobby is often designing antennas. Part black magic, part hard science, and part engineering, antenna design is an art. And while the expression of that art often ends up boiling down to pieces of wire cut to the correct length, some antennas have a […]

via HACKADAY: Putting a Poor Man’s Vector Analyzer Through Its Paces

If anything about electronics approaches the level of black magic, it’s antenna theory. Entire books dedicated to the subject often merely scratch the surface, and unless you’re a pro with all the expensive test gear needed to visualize what’s happening, the chances are pretty good that your antenna game is more practical than theoretical. Not that […]

Man rescued from atop ham radio antenna (Massachusetts)

An 80-year-old Edgartown man was rescued Monday morning by the Edgartown Fire Department from a ham radio tower in his yard. William Welch, an electrician and avid amateur radio operator, got his sneaker caught atop a 20-foot-tall backyard antenna after he scaled the structure to secure it ahead of the impending nor’easter, his wife Betty […]

ARRL Suggests FCC May Need to Intervene to Ensure Effective Antenna Rights

Commenting in response to an FCC Public Notice (DA 17-1180) released last month, ARRL addressed the extent of Amateur Radio’s response to recent hurricane disasters and efforts needed to expand the use of Amateur Radio services when it comes to planning, testing, and providing emergency communication. The comments point out that Amateur Radio not only has been “far […]

PODCAST: This Week in Amateur Radio #988

This Week in Amateur Radio #988 Here is a summary of the news trending the week of February 3, 2018. Here is a summary of the news trending this week. February 03, 2018 This weeks edition, is anchored by,Amy Jo Clark, Fred Fitte, NF2F, Don Hulick, K2ATJ, and Jessica Bowen, KB2VWX. Produced and edited by […]

via HACKADAY: An ADS-B Antenna Built From Actual Garbage

With the advent of low-cost software defined radio (SDR), anyone who’s interested can surf the airwaves from the FM band all the way up to the gigahertz frequencies used by geosynchronous satellites for about $20 USD. It’s difficult to overstate the impact this has had on the world of radio hacking. It used to be […]

via HACKADAY: Slinky Walks Down Stairs and Picks up 80m Band

Originally intended as a way to stabilize sensitive instruments on ships during World War II, the Slinky is quite simply a helical spring with an unusually good sales pitch. But as millions of children have found out since the 1940’s, once you roll your Slinky down the stairs a few times, you’ve basically hit the […]

WWV 25 MHz Signal Swapped to Circular Polarization, Reception Reports Invited

The resurrected 25-MHz signal of time and frequency standard station WWV is now emanating from a circularly polarized turnstile antenna. WWV had used a vertically polarized antenna on 25 MHz in the 1970s. Silent since 1977, the 25-MHz signal returned to the air on an “experimental basis” in April 2014, and it’s been transmitting ever […]

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