What is the "R91 mod"?

[Tony - KM0O]

I suspect I might know about this under another name, but I want to make sure that I haven't missed something important. Just what is the "R91 mod"?

My K3 is #444.

Thanks,
Tony, KM0O

[Don Wilhelm-4]

Tony,

R91 is *not* a mod by itself.  You did not miss anything at all.
When installing the KRX3, the builder is asked to meaure the value of
R91 and add a parallel resistor if it is 100 ohms.  If it is 22 ohms, do
nothing.

If you wish to check and modify R91 to 22 ohms in your K3 without regard
to the KRC3, then you may do that, you will notice no difference.

73,
Don W3FPR

KM0O wrote:
> I suspect I might know about this under another name, but I want to make sure
> that I haven't missed something important. Just what is the "R91 mod"?
>
>  
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