User's Manual | ACOM 1000 | HF + 6m Linear Amplifier
Tuning to the left of the center would lead to the opposite: less gain and more power attainable. Of course,
this requires more drive power, more plate current, and more plate heat, which shortens tube's-expected
life, as its cathode would be faster exhausted.
You might use the off-center tuning hint also to compensate for mains voltage variations in order to
maintain tube efficiency: tune to the right when mains is higher, or tune to the left if it's lower than the
nominal voltage. Please see (see section
nominal.
4.4. ON LINE Information Screens and Control Functions
a)
Besides the Warming Up and TRI (see Sections
and Standby
as follows:
Forward Power
•
Reflected Power
•
Output Power (difference between forward and reflected)
•
Antenna VSWR
•
Drive RF Power
•
RF Power Gain
•
Plate Current
•
High Voltage
•
Plate RF Peak
•
Screen Current
•
DC Power Input (product of plate current and high voltage)
•
Exhaust Air Temperature (Celsius and Fahrenheit scales).
•
You can use them to monitor the technical state of the amplifier and the associated parameters in
digital form.
Selection is made by the PREV and NEXT buttons. You may change them in a closed loop, while
the amplifier is used and controlled in operate and standby modes, changes transmit and receive,
without any influence by the measurement process.
b)
You can control Auto-Operate feature selection also while ON LINE. The method is the same
as it is described for OFF LINE (see Sections
Operate enabling and disabling
August 2020
2.2 Line Voltage Selection
Modes,
), you have 12 more Information screens available. They are
4.3 Tuning
).
) for more than 10% difference from the
4.1 Turning ON and OFF
5.1 Contrast and Backlighting control
S e c t i o n OPERATION | Page 23 of 36
,
4.2 Changing Operate
and
5.2 Auto-
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