[Elecraft] Re: mod to allow K2 to handle huge in-band signals--please try

Tom Hammond NØSS [email protected]
Sat Jan 4 12:06:05 2003


Let's not confuse front end overload with what Wayne's trying to fix. 
They're not the same.

Mere front end overload will probably NOT create the problem the addition 
of the diodes is designed to protect against.

The two radios (one being a K2) must be VERY close together. I suspect 
that  being a hundred YARDS apart, even at 1 KW, might NOT cause this problem.

It takes a WHOPPING BIG signal input (as Wayne says, something like -6dB) 
to cause the specific problem to surface. AND they have to be INSIDE the 
filter passband to boot.

As Julian, G4ILO, recently comments, paraphrasing... "I suspect that few of 
us really NEED this mod", and he is correct! However, it's too simple to 
install NOT to do so when the next opportunity presents itself.

So, it's not a MUST HAVE mode, but at is a GOOD TO ADD MOD... sometime.

73,

Tom  N0SS

Ron D'Eau Claire wrote:
>Is that enough to produce the "howling" effect? It sounded like it took
>another transmitter practically sitting on the same table ...
>
> >Mike, K5PU, wrote:
>I have a couple operators that live very close (within a few miles of
>me) that use their legal limit amps regularily and I'm always stumbling
>across them at 'peg the needle' db over.