Handy Reference


How much current will AWG 14 wire handle?

How many turns does it take to get a 140 mH inductor?

What is the pinout for a TO-220 transistor?

Answer these and many other questions using the Handy Reference. The Handy Reference consists of two sides of an 8.5 × 11 inch sheet chock full of useful tidbits of reference data. It covers everything from the formula for capacitance to a wire table in a one page cheat sheet. So put down that data book and click on to download a copy of the Handy Reference.

Corrected Rev 3 PDF now available. – Ed

Jack Smith, K8ZOA, was first licensed as KN8ZOA in 1961 and has held an Amateur Extra class license since 1963. He received a BSEE degree from Wayne State University in Detroit in 1968 and a JD degree magna cum laude from Wayne State University School of Law in 1976. Presently retired, he has enjoyed a career involving both engineering and telecommunications law. He is a co-founder of the telecommunications consulting firm TeleworX and is the author of Programming the PIC Microcontroller with MBasic (Newnes Publishing: 2005), as well as articles published in QEX and 73 Amateur Radio magazines. His Web site is

Jack R. Smith, K8ZOA