SWR protection

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SWR protection

Hein de Boer
Hello eveybody, I often use my K2 with a homebrew PA and a homebrew tuner, I can easily take the reflectionvoltage from the foresaid antennatuner and I should like to use that voltage to decrease the input from the K2 to the PA if the SWR should become to high. Anybody already experience ?? How to use that voltage in the K2??
73 from Hein/PA0NQ
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RE: SWR protection

Don Wilhelm-3
Hein,

You could do that by sending commands via the KIO2 interface to the K2 - but
you would have to implement a microprocessor in your amplifier to accomplish
that feat.  See the KIO2 Programmers Reference document.

The KPA100 accomplishes similar function, but communicates to the base K2
via the AUXBUS signals - problem is that the AUXBUS signalling is Elecraft
proprietary information, so using that is problematic.

There is no one signal that can be used to control the K2 power.  I would
think it easier to provide a switch in your amplifier to shunt the input
power off to a dummy load or insert an attenuator - that way all the
controls reside in the amplifier itself.

73,
Don W3FPR

> -----Original Message-----
>
> Hello eveybody, I often use my K2 with a homebrew PA and a
> homebrew tuner, I can easily take the reflectionvoltage from the
> foresaid antennatuner and I should like to use that voltage to
> decrease the input from the K2 to the PA if the SWR should become
> to high. Anybody already experience ?? How to use that voltage in the K2??
> 73 from Hein/PA0NQ
>

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