Reg Edwards wrote:

I wonder why most commercial finals are protected from a high SWR
by foldback circuitry to avoid damage to the finals?

They don't. There isn't an SWR meter on the station.

Reg, I'm talking about commercially manufactured ham radio
finals. Virtually every single one of them has protection
circuitry and virtually every one of them has a built-in
SWR metering system.
--
73, Cecil http://www.qsl.net/w5dxp



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