The good news is that digital modes do not require a lot of power. I
worked Israel on 50w, and Seattle of 15w from the east coast of
Virginia. You can an additional fan, I believe Tom shows it on his page.
David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 #5982
Tom Hammond wrote:
Gary:
I'm thinking of buying the kit for the K2 with the 100 watt PA. I will
mainly be operating on Digital modes such as PSK 31 MFSK 16 RTTY and
Hellschreiber. I will be using a Tigertronics SL 1+ interface but was
wondering if there are any known problems with the K2 and any or all
of these modes before I buy the Kit and start building.
The KPA100 is a nice 100W amp, BUT it is NOT rated for 100% duty cycle
in digital (continuous-duty carrier) modes. In fact, were it me, I'd
probably not run it at more than about 40W output if I was using it on a
digital mode.
You COULD probably run it at somewhat higher output IF:
1) You remoted the KPA100, as MANY(!) have done, to a separate EC2
enclosure, AND
2) IF you took steps to BLOW A LOT of air across the heatsink.
At higher continuous duty output power levels, I'd want to pass a
LOT of air across both the TOP and the BOTTOM (between the PC board and
the heatsink) of the heatsink.
Cheers,
Tom Hammond
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