[Elecraft] Keying the K3s

[Dave Sublette]

Good morning,

I have two questions.  I plan to operate a contest next weekend in the QRP
mode.  Is there any added danger for operating the K3s at the 5 watt level
for the contest?

The other question is about keying CW with the computer.  I have N1MM
working.  It reads the frequency and controls the K3s.  But, how may I use
the CW feature of N1MM to send CW?  I know folks use devices like the
WinKeyer, but I don't have one of those.  I will consult the N1MM to see if
there are any instructions.  But my overriding concern is, are there any
issues that make using a WinKeyer better than keying the K3s directly
through the USB control of the interface?

Thanks for any help.

73,

Dave, K4TO