TM 11-5895-846-14
Table 3-18. LNA Response Adjustment-Continued
Table 3-18.
LNA
Response Adjustment-
Condition
Corrective Action
Continued
a. Response has a
6.
a. Set the synthesizer at 8399
Condition
Corrective Action
MHz.
b. Adjust the pump
positive tilt.
d. Measure the gain with the
b. Gain is higher at all
power control in a CW
synthesizer
set at 7950,
frequencies.
direction to decrease the gain
8200, 8300 and 8399 MHz. If
to the desired level.
satisfactory, adjustment is
c. Set the synthesizer at 7950
complete; if not satisfactory,
MHz and adjust pump power
observe the conditions and
and bias voltage controls to
compare with this table.
obtain the same gain as
Proceed accordingly.
obtained in step b. above.
Figure 3-19. LNA Adjustment Locations.
3-37