Yaesu FTDX9000D Operation Manual page 93

SSB/AM M
ODE
Quick Point
H Class-A operation provides a significant improvement in transmitter distortion suppression. During Class-A, the 3rd-
order IMD products are typically suppressed 50 dB, while the 5th- and higher-order IMD products (that can cause
"splatter" that interferes with others) will typically be suppressed 70 dB or more.
H If you are using a linear amplifier such as the VL-1000, the low distortion produced by the FT
means that these intermodulation distortion products will not exist to be amplified by your linear.
H High-Power 200-Watt Final Amplifier Stage
The final amplifier stage of the FT
operating at 50 Volts. Thie push-pull configuration provides low distortion along with high power output. The 120 mm
thermostatically-controlled cooling fan directs forced air across the heat sink, should the heat sink temperature exceed
the temperature that will trigger the thermostat.
FT 9000D O
DX PERATION
T
RANSMISSION (L
L - D
OW ISTORTION
9000D utilizes a pair of ST Micro Electronics Corp. SD2931 MOSFET devices
M
ANUAL
- D
OW ISTORTION
CLASS-A O
PERATION
CLASS-A O
PERATION
9000D's transmitter
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