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Installation Instructions
One of the unique features of the TFC-3001 is the
ability of the unit to monitor all functions of the
transmitter simultaneously.
The test center can be installed at any point in
your transmitter line.
Starting Tips
Operating Instructions
Watts
SWR Set
A.M. Modulation Check
1. Set SWR and MOD RF level controls to minimum.
2. Set Range Switch to 1000.
3. Set SWR and MOD functions on each Range to
prevent damage to the meter movements.
The TFC-3001 Test Center will indicate the power output (in
watts) of your equipment at the point in the transmission line
where you have installed the test center. To measure any
power from 1 to 1000 watts, just set the RF Power Range
Switch (#6 FIG. 1) to the appropriate range: 10, 100, 1000
watts. Key the transmitter and read the wattage on the
corresponding scale of the RF Power Meter (#2 Fig. 1).
NOTE: If power output is uncertain, use the highest range
and work down until the range is appropriate to prevent
possible damage to the meter movement.
1. Operate SWR Set Control Switch (#7 Fig. 1) to Set Position.
2. Turn SWR RF Level Control (#5 Fig. 1) to Min.
3. Key transmitter and turn SWR RF Level Control clockwise
(#5 Fig. 1) to give a full scale meter reading to Set Line on
the SWR Meter (#1 Fig. 1).
NOTE: The SWR Functions need to be performed on each
wattage range to prevent possible damage to the meter
movements.
1. Operate MOD SET Control Switch (#7 Fig. 1) to SET position.
2. Turn MOD RF Level Control (#8 Fig. 1) to Min.
3. Key transmitter and turn MOD RF Level Control (#8 Fig 1)
clockwise to give a full scale meter reading to Set on the
Modulation Meter (#3 Fig. 1)
4. Operate MOD SET Control Switch (#8 Fig. 1) to MOD
position. Key transmitter and talk or steadily whistle into the
microphone. Read Modulation percentage directly on the
modulation meter (#3 Fig. 1)
5.
DO NOT CHECK MODULATION WITH HIGH POWER
NOTE: A.M. modulation check functions must be performed
on each wattage range, to prevent possible damage to the
meter movements.
Transmitter
DOSY Test Center
RG/58BU
Input
Antenna
Power
Light Switch
1. SWR Meter
2. RF Power Watt Meter
3. Modulation Meter
4. Frequency Counter
5. SWR RF Level Control
6. RF Range Switch
7. SWR/MOD Set Control
8. MOD RF level Control
Figure 1
