HEATKEYS

Tests your audio equipment, speakers, room acoustics and hearing. Audio signals and test tones playable online. High resolution sound test files available for free download.

DialABC.com home page

MediaCollege.com is a free resource site, suitable for anyone with an interest in audio-visual media. Tutorials and articles include everything from video production to website design.

Digital Signal Processing Software

JetCityOrange, the West Seattle Lighthouse (47.590107,-122.385872). Space Needle webcam, editation, Buddhism, photography, DIY mods and hacks, barcode & Buddhist tattoos, sound files, free ringtones, free wallpaper images, and more. Jerry Whiting

8255, PPI, parallel, digital, digital interface card, interface card, DIO, I/O, robot, robotics, computer, control, motor, motor control, parallel port, infrared, emitter, detector

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Scratch: a programming language for everyone. Create interactive stories, games, music and art - and share them online.

The Repeater Builders Technical Information Page - a library of hands-on reference material for the repeater builder, be he (or she) amateur radio, commercial radio, LMR, public safety, CAP, GMRS, or ???