TM 11-5840-281-12-1
4-27. PRELIMINARY SERVICING AND ADJUSTMENT. (CONT)
INSTALLING PRESELECTOR FILTERS (CONT)
1.
Open CONTROL-MONITOR, LOCAL panel (1) and locate preselector filter FL5 (2) on FL5 WAVEGUIDE (3) and
preselector filter FL6 (4) on FL6 WAVEGUIDE (5).
2.
Using table below, check that frequency range of filters FL5 and FL6 correspond to assigned transmitter
frequency.
PRESELECTOR FILTER
9000 to 9200 MHz
139966-1 (2 each)
9200 to 9400 MHz
139966-2 (2 each)
9400 to 9600 MHz
139966-3 (2 each)
NOTE
If correct preselector filters are already installed, skip steps 3 through 34 and perform step
35. If proper filters are not already installed, proceed with step 3 below.
3.
Direct second person to tilt azimuth antenna using ANTENNA control located on master control Indicator until
AZIMUTH/BITE meter Indicates zero degrees. Set the following controls to positions Indicated.
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