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Jim Weir

Jim Weir
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Jim Weir is the chief avioniker at RST Engineering. He answers avionics questions in the Internet newsgroup www.pilotsofamerica.com–Maintenance. His technical advisor, Cyndi Weir, got her Masters degree in English and Journalism and keeps Jim on the straight and narrow. Check out their web site at www.rst-engr.com/kitplanes for previous articles and supplements.

A Grid-Free Hangar

This may well be the most ambitious project I’ve tackled in the last 35 years of writing my KITPLANES® columns. I’m going to unplug...

ADS-B, Eh?

In the December 2019 issue of Kitplanes®, Larry Anglisano took us on a scenic journey of what ADS-B is going to look like from...

Testing, Testing, Can You Hear Me Yet?

We’ve come a long way from the Narco Omnigator (vintage 1958 or so) to the latest glass gizmos that do everything except make the...

A Tale of Two Antennas

With the recent rush to ADS-B, there has been a significant interest in GPS installations and even more interest in the antenna for those GPS installations. The interest runs the gamut from the eBay $1.99 specials to the gold-plated TSO-STC-PMA antennas, some of which are in the popular aviation catalogs ticking the $1,000 mark. The […]
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We Shall Be Led Into the Light

In 1850, British physicist Joseph Swan began experimenting with paper coated with carbon in a glass tube that was partially evacuated from air. His paper glowed rather dimly, and the poor vacuum pumps of the day let enough oxygen into the glass tube to set the paper on fire when the electrified carbon got hot […]
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Tall Transmission Tales

(Antennas, Chapter 3)
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Antennas According to Jim (Ch. 2)

Aero 'lectrics.
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Antennas According to Jim (Ch. 1)

First, let’s talk about “polarization”; there are three polarizations. The first two are easy.

Aero ‘lectrics

Franklin vs. Edison, Thomson, Millikan, et al.

Aero lectrics

Hall of fame. By Jim Weir.

In Case You Missed it

Static Port Location and Altitude Calibration

Often a challenge, accuracy depends on three things: location, location, location.

Ask the DAR

DAR Mel Asberry clears up airspace restrictions for homebuilts during flight testing and discusses how the original builder of a homebuilt design remains the builder unless the airworthiness certificate is surrendered, which has implications for reselling an aircraft.

All About Avionics, Part 9

One of the final steps in getting your avionics suite to work is installation of some sort of antenna to capture various radio frequencies. Failing to choose the right antenna and install it properly can compromise the whole installation. Rather than focusing on the intricacies of antenna design, the author discusses the merits of internal versus external for particular equipment plus where to place them; by Stein Bruch

Error Chain

Some days, it’s the little things. By James E. Clark.