Page 91
FT
DX
9000D O
PERATION
M
ANUAL
SSB/AM M
ODE
T
RANSMISSION
(L
OW
- D
ISTORTION
CLASS-A O
PERATION
)
Quick Point
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.
If you are using a linear amplifier such as the VL-1000, the low distortion produced by the FT
DX
9000D’s transmitter
means that these intermodulation distortion products will not exist to be amplified by your linear.
High-Power 200-Watt Final Amplifier Stage
The final amplifier stage of the FT
DX
9000D utilizes a pair of ST Micro Electronics Corp. SD2931 MOSFET devices
operating at 50 Volts. The 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.
L
OW
- D
ISTORTION
CLASS-A O
PERATION
Содержание FT DX 9000D - COMPUTER AIDED TRANSCEIVER
Страница 1: ...FTDX9000D Operation Manual...
Страница 2: ......
Страница 95: ...Page 93 FT DX 9000D OPERATION MANUAL NOTE...
Страница 101: ...Page 99 FT DX 9000D OPERATION MANUAL NOTE...
Страница 127: ...Page 125 FT DX 9000D OPERATION MANUAL NOTE...
Страница 149: ...Page 147 FTDX9000D OPERATION MANUAL NOTE...
Страница 152: ...Page 150 FTDX9000D OPERATION MANUAL NOTE...
Страница 153: ...Page 151 FTDX9000D OPERATION MANUAL NOTE...
Страница 154: ...Page 152 FTDX9000D OPERATION MANUAL NOTE...