More K2 power?

[Fred (FL)]

Wonder how much trouble it would be for Elecraft
designer(s), to beef up the K2's final amp pair
- like 50%?  It would seem to be fairly straight
forward to swap out the matched amplifer FETs - with a
pair and associated changed circuitry to beef K2's
output potential to like 30watts?  Or double what it
is now?  Possible?

Sort of like a new pair of shoes.

Fred
N3CSY


 
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[Ron D'Eau Claire-2]

It's been my experience that adding anything less than 6 dB additional
power, quadrupling the output, isn't worth the effort. Doubling the power -
a 3 dB increase - is, under most conditions, a change that is just barely
detectable at the receiving end. Often, when QSB is swinging the signal up
and down, even 6 dB is hard to notice.

It might be possible, but would require more driving power to the finals, at
least on some bands where the K2 just meets the 10 watt specifications now,
plus new output filters to match the 50 ohm output to the finals, plus
perhaps a better heat sink than just the bottom cover.

Ron AC7AC

-----Original Message-----
Wonder how much trouble it would be for Elecraft
designer(s), to beef up the K2's final amp pair
- like 50%?  It would seem to be fairly straight
forward to swap out the matched amplifer FETs - with a
pair and associated changed circuitry to beef K2's
output potential to like 30watts?  Or double what it
is now?  Possible?

Sort of like a new pair of shoes.

Fred
N3CSY

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[Darwin, Keith]

Well, you could still use the bottom cover if you put a whizzer fan there.  And if you did it right, you could have the fan blow down to draw heat away from the rig and to lift it up to eye position for better viewing.
 
:-)
 
- Keith N1AS -

________________________________

plus
perhaps a better heat sink than just the bottom cover.

Ron AC7AC

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