On 1/13/2024 2:02 PM, email wrote:
With the K4 power (drive) low enough, the amp can make 200W. Maybe not
efficiently.
I regularly reduce drive from K3 or K4 to big amp to run 100W in NAQP,
and on 60M, and 200W on 30M. I do that because I run the K3 and K4 for
two-radio contesting from a 100Ah LiFePO4 battery that is floated
through a charge regulator. That allows the battery to keep up during a
long contest, AND run the radios in the range of 13VDC, where the output
stage runs cleaner.
(yes, 200W is only 3db more than 100W) If FT8 RX level
at -24, then 3db may be important ??
Depends on what you're trying to work, and conditions. I run legal limit
with WSJT modes when going for DX on 160M (5,000 mile paths), and for
weak signal propagation on 6M.
73, Jim K9YC
steve WB3LGC
On 1/12/24 7:52 PM, Ken WA8JXM wrote:
Why do you have the amplifier running? 30m is as restricted power band.
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