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ARRL Products: Instructor Support (More) What's a Microcontroller? Parts Kit and Text -- Incorporates a variety of fun and engaging experiments using motion, light, and sound. Basic Electronics Course and Kit -- The Basic Electronics Course and Kit is intended for those teachers and instructors that want a ready resource that they can adapt to their instruction of electronic fundamentals. The materials include a PowerPoint presentation and instructor's script. The course is designed around affordable components, prototyping board, and VOM and uses Understanding Basic Electronics as the associated reference (sold separately). Parallax USB Oscilloscope -- This portable two-channel digital storage oscilloscope is a handy and affordable tool for both hobbyist and student! The ARRL Instructor's Manual for Technician Class License Courses -- For use with The ARRL Ham Radio License Manual. Includes CD-ROM. Boe-Bot Robot Kit -- The new USB Boe-Bot is a reprogrammable robot built on a high-quality brushed aluminum chassis.

Grid Square Calculator

Enter your latitude and longitude. If you know your latitude and longitude in decimal degrees (e.g., 41.714), enter those values into the "degrees" fields and leave the "minutes" and "seconds" fields blank. If you know your latitude and longitude in degrees, minutes and seconds, enter the values into the appropriate fields. (Don't enter both decimal degrees and minutes/seconds!) Be sure the correct directional buttons are selected.

Note that only the integer degrees (not the fractional part or the minutes and seconds) are needed to calculate the 4-digit grid square, but providing the exact values will allow the program to calculate the distance from the specified location to the nearest edges of the grid square. This is useful for determining how accurately you must know the location to be sure of the correct grid square. Finding the 6-digit grid square requires degrees and minutes.