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

[Mike McCoy]

I'm wondering the same thing and if this mod might be good/wise in my case
as well.

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.

Comments?

Mike K5PU

>
> I had exactly the same reaction as Gary ... why would anyone transmit on
the
> same frequency in such close proximity to each other?  Now with Eric's
> explanation, I understand the HFpackers' application and it makes sense.
>
> However, I don't understand why the protection is applied to the IF amp
> rather than the antenna jack.  Isn't it possible to fry stuff between the
> antenna and the IF?
>
> Back in May during our QRO (KW amps) multi-multi operation from 6Y, we
were
> very concerned about damaging our K2's by harmonics from other bands
getting
> into our RX Antenna jack (with RX antenna connected and in close proximity
> to all the other antennas).  Eric and Wayne suggested a back-to-back diode
> solution and even a series resistor to clamp the voltage and limit the
> current at the jack itself.  This has always been a concern with
commercial
> rigs and it is common to blow up something in their front end.  Perhaps
the
> K2 front end is more robust?
>
> 73,
> Ed - W0YK
>
>
>
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