Aero ‘lectrics

Jim Weir uses quarter-wave magic to make a coaxial balun and a VOR/LOC splitter.

Aero ‘lectrics

Jim Weir continues his series on digital logic (CMOS), and makes the little logic circuits do things that their inventors never considered.

Aero ‘lectrics

So far in Jim Weirs investigation of digital logic, hes explored small scale integration. This time, its time to ramp it up a bit and use some medium scale integration devices that will remember your settings.

Aero ‘lectrics

The subject this month is Schmitt triggers and digital gates, which can be employed for a variety of purposes in homebuilt aircraft including use with switches and sensors or panel lighting.

Aero ‘lectrics

If you need a horn to sound when the airspeed drops below a certain level or when the power is cut and the landing gear is still up and locked, an electronic circuitry solution is the lightest, most reliable and most cost-effective way to go.

Aero ‘lectrics

This month, we look at how an airspeed indicator works and rig up a simple calibration tool for it;

Aero ‘lectrics

This month we get into actually building the portable antenna that was described last month;

Aero ‘lectrics

In this first of a two-part series, Jim Weir builds a low-cost, high-efficiency portable ground-based antenna system that he used to great effect in the recent CAFE 400 (fuel efficiency) race in Northern California. You can do it, too.

The Home Machinist

If your hacksaw has been relegated to the bottom of your toolbox, chances are its because you don't know how to use it properly. Author Bob Fritz offers a primer on the subject that may make you think more highly of this underused tool. A discussion of cam construction and keyless chucks rounds out this installment.

Aero ‘lectrics

Impressed by the quality of the cheap headsets he encountered on a recent commercial airliner flight, Jim Weir dissected the airline unit and has come up with a way to replicate it in your own shop.

In Case You Missed it

Checkpoints

Fly-in gems.

Experimental Audio Panels: Sophisticated, Integrated

PS Engineering and Garmin have kit-focused audio systems for under $2000. They have generous feature sets and high-end audio quality.

Viperjet

Viperjet N999VJ is right at home at Chino Airport in Southern California, where...

Letters

 Magic Carpet RideMr. Dye, I greatly enjoyed and appreciated your skillfully written Free Flight...