Home Authors Posts by Jim Weir

Jim Weir

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.

Airshow Antennas

We are headed into airshow calendar time. I don’t care if it is the granddaddy of them all (Oshkosh) or the usual four beat-up...

A HOG in Time Takes…Forever

As I told you a couple of months ago, “In theory, there is no difference between theory and practice. In practice there is a...

ELT Enlightenment

I had another subject’s full column in hand for this issue, but when I get half a dozen questions in the space of a...


Potpourri (pronounced “poh’purree”), taken literally from the French origin, is translated “rotten pot.” In English, though, it means a collection of small things; in...

Progress Report: Bits and Pieces of HOG

OK, so we’ve got that 100-watt solar panel firmly bolted to the hangar roof. Let’s take the other pieces that we have to have...

HOG Prime Mover

Time to stop messing around. Time to fish or cut bait. Time to…oh, you know all the rest of that stuff. Me? I’m getting...

Here Come Hell’s Bells Again

We can use decibel calculations no matter if we are measuring in power or voltage; the calculations and outcome are identical.

A Match Made in VSWR Heaven

Why should we care about VSWR?

Measuring Antennas

Freely admitted, my very early experience with antennas was confined to looking at a newspaper picture of Sputnik 1 (Prosteyshiy Sputnik-1) in October 1957...

Chattering Timers

Back in November 1999, I sadly consigned my old battery eating “buzz box,” a WW-II 1940s-era mechanical doorbell-ringer magneto timer, to that big buzz...

In Case You Missed it


Material MattersBob Hadley wrote an excellent article that clears up what all those...

Remember When: The BD-5 Micro

The BD-5's reputation precedes it: long in development, company bankruptcy, investor losses, challenging to fly, early accidents. With an introduction like that, who would think this micro plane would be such a positively straightforward blast to fly?

The Dawn Patrol

Blood on the sock, 2013.

Maintenance Matters

Using a volt-ohm meter.