Model CMA-26003A Flame-proof Key

This U.S. Navy Key was mounted on this board by WN6FZH (1962)

This key has survived for more than 30 years of intermittent use at WB6FZH. It was first used at WN6FZH in San Rafael, CA as a 2nd key used mostly for testing homebrew and military radio projects. A J-38 was the primary key used at the main station. This key is pictured in the 1963 DXpedition to the Sierras with Novice, WN6FZH, Greg.

This key is called "flame-proof" because the contacts are within the body of the key and would not ignite any explosive vapors in the immediate area of the key.

This key is presently packed with my HW-8 QRP rig, but is used to key other 2nd transmitters and projects being tested. It has survived many moves, trips, Field Days, loan-outs, physical abuse, and still works fine.

The wood is fir, and was carefully selected from some scraps of wood at a construction site passed on my way home from High School in 1962. It was carefully sanded and felt was glued to the bottom. One of these days I will probably refurbish it, but perhaps not.

Last Updated: February 28, 1998