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|  MIL-N-81857(AS)
F r eq u e n c y
Amplitude
-30 dbm
0.1 MHz to 950 MHz
-10 dbm
6.3 MHz (IF)
-30 dbm
1250 MHz to 10,000 MHz
3 . 4 . 1 0 . 3 Radiated and Conducted Interference - The
equipment shall meet the radiated and conducted interference and
s u s c e p t i b i l i t y requirements of MIL-I-6181. The equipment shall
comply with these requirements in the REC, T/R and A/A modes
o f operation j including both the search and track conditions, and
a l s o during channel selection. F u r t h e r m o r e , the antenna con-
ducted spurious CW power shall not exceed -47 dbm at frequencies
between 950 and 1250 MHz in the REC mode or between pulse pairs
in the T/R and A/A modes.
3 . 4 . 1 1 Operational Range - The operational range of
the equipment shall be 300 3 nautical miles. The equipment
shall be required to perform all functions specified herein with
t h e prescribed accuracies while operating in its respective modes
within the operational range.
3 . 4 . 1 2 Direction of Search:
3 . 4 . 1 2 . 1 Distance Search Direction - When the equipment
electrically scans the range in search of a reply signal, the direc-
tion of scanning shall be outward in distance in order to minimize
e r r o n e o u s distance data resulting from echoes.
3 . 4 . 1 2 . 2 Bearing Search Direction - In the absence of a
usable bearing signal, the equipment shall cause the bearing indi-
cator to search in the direction which produces successively
r e t r o g r e s s i v e bearing indications. When a usable bearing signal
is available at the antenna terminal, the equipment shall cause
the bearing indicator to move in the direction which involves the
shorter angular coverage between the position at the time of
application of the signal and the position of correct bearing display.
3 . 4 . 1 3 Speed of Response:
14
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