The WB2FCN
20 Meter
Solid-State
1KW Transmitter
- Well folks, just so it can't be said that I
don't
have ANY solid state equipment, here is my version of a solid-state
- Kilowatt rig.
- The exciter is a manufactured model ITT
MacKay model
337A, solid state transmitter/exciter which provides 100
- Milliwatts, with a frequency range from .1
to 29.9999
Mhz. The various modes are AM/CW/SSB (Usb/Lsb) and
- FM.
- The amplifier is a module (the RF section)
from an ENI RF Plasma
generator,
which operated
at 13.56 Mhz. The
- power OUTPUT is 750 watts, and the module
is a linear
amplifier, requiring only 100 Milliwatts of drive for a full
- 750 watt output. The module contains the
bias network,
a pre-driver, that takes the 100 Milliwatts and cranks it up
- feeds a power divider that drives two
separate 500
watt modules, the output of the 500 watt modules is fed to a
- broadband combiner network, and then to a
lowpass
filter, and then to a 50 ohm N-type coaxial connector.
-
-
- Now I know what you are asking yourself,
where does
the heat go. Well this little beauty has a water-cooled heat
- sink. It keeps the system cool to the touch
with
it running 700+ watts output, and even handles AM quite nicely, and
- no over heating when making "Old Buzzard"
transmissions.
