[Elecraft] 100 W into K3

[iain macdonnell - N6ML]

There are various PIN diodes that can be damaged. Here's what support
suggested (in the past) to begin troubleshooting:

"If the rig has a KXV3 option installed, PIN diode D5 will be damaged
by high levels of RF coming into the receiver (more than about 2w).
This would affect both the main and sub when the antenna is shared.

Remove the KXV3 and jumper across J66 pins 8-10, and 13-15 and see if
the sensitivity returns. If so, D5 needs replaced or the entire KXV3
if you are not able to replace the tiny SMD D5.

If only the main is affected, it would be D25 on the RF board near the
little stop band filter board.

It could also be the larger PIN diodes on the RF board or the KPA3 if
a lot of power or a big lightning strike caused the damaged. See if
the signals get strong with the Power knob below 12w so the KPA3 PIN
diodes are not in the signal path."

73/GL!

    ~iain / N6ML



On Sat, Mar 2, 2013 at 6:45 AM, fabio.grisafi at libero.it
<fabio.grisafi at libero.it> wrote:
> Hello!
>
> Here at II9P my friend Carmelo sent 100 Watts into my K3 ant connector (ANT1).
>
> Radio is not working! What do you believe is broken? I don't remember if the radio was ON or OFF.
>
> Help very appreciated.
>
> Regards,
> Fabio, IT9GSF.
>
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