[TowerTalk] Why 50 Ohms?

Paul Christensen w9ac at arrl.net
Tue Jan 17 08:19:06 PST 2012

> I don't think so. 50 ohms was the standard for VHF/UHF communications
> gear because it more closely matched the impedance of the most common
> antennas -- a quarter wave vertical with radials, or a quarter wave on
> the roof of a vehicle.  It did NOT become common in ham radio until the
> days of solid state rigs with fixed tuned output stages, and the
> designers of those rigs chose 50 ohms.

Gary, K9AY, presents an interesting hypothesis that combines theory and some 
evolutionary practical developments:


Paul, W9AC 

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