BAND
PLATE
LOADING
80
4
2
40
6-7
3
20
7-8
4
15
8-9
5
10
9
6
Turn the power switch of FL-2000B on and wait for a few seconds for tube warm up.
Turn OPER switch onto "OPER" position.
Turn on the exciter and increase the exciter output while not exceeding 0.2 Amps
plate current and tune the-plate control for dip in the plate current. Alternately adjust
the plate and heading controls while increasing the exciter-power in small increments
until maximum R. F. output occurs at 0.5 Amps plate current. Do not exceed 10
seconds at maximum input to protect the tubes.
To measure relative power output, set the meter switch to "SWR" and "F" (forward)
position. If the relative output meter goes off scale during tune up, reduce the meter
sensitivity control in a downward direction. Approximate settings of the loading
control at maximum input are given in the chart on page for 50 ohm load.
Now you are ready for CW and SSB operation.
For SSB operation, the exciter should be adjusted to run the FL-2000B plate current
between 0.2 and 0.3 Amps under normal voice operating conditions, because the
meter cannot follow speech speed.
For AM operation, tune up the FL-2000B as described previously. Then the exciter
should be adjusted to run the FL-2000B at 0.2 Amps plate current with unmodulated
carrier.
To measure the SWR of the antenna system, set the meter switch to SWR and apply
R. F. power to the antenna. Adjust the meter sensitivity control to read
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