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starts to run at its full speed. When the heat sink temperature exceeds 70• Ž
to a long continuous transmission or any other reasons, the built-in
thermo-sensor will halt the transmission automatically. In that case, do not turn
OFF 1 POWER SWITCH. This is because the fan has to be kept running in
order to cool down the heat sink. Keep 1 POWER SWITCH ON. Transmission
can be restarted once the heat sink temperature is cooled down to the normal
range.
‚ T LO POWER (LED):
Lights when the TX input attenuator is turned on. With the attenuator ON, the
transmission power becomes approx. half of the full output power.
‚ U RX AMP +15dB/ +6dB/-20dB (LED):
Three LED's show the approximate gain of the R pre-amp at each gain selection.
The gain can be selected by 12 RX AMP SWITCH.
‚ V RF OUT/SWR/VCC (LED):
Indicates the scale of the multi-meter being selected.
‚ W W/SWR/VCC METER:
The multi-meter gives the readings of wattage (RF output power), SWR
(standing wave ratio), and Vcc (DC power supply voltage) respectively. The
output power shown is average power. In the SSB operation, the output power
indicated in the meter can only be approx. 40% of the peak power output. SWR
is automatically shown at any power above 50W as a result of the incorporation
of advanced IC.
‚ X TX (LED):
Lights when the amp is in transmission mode. The LED goes OFF when in the
receive (RX) mode.
‚ P ‚ O RX (LED):
Lights when the RX pre-amp is turned ON.
‚ P ‚ P RF OUT/SWR/VCC (METER SELECTION SWITCH):
Depending on the function to monitor, push the desired switch for the proper
4
due
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