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|  MIL-R-23016(Wep)
specified frequency range shall be such that an r-f input signal
of not more than 3 "hard" microvolt, modulated 30% at 1000
cycles, shall produce a signal-plus-noise-to-noise ratio of 6
db. This sensitivity shall be measured with the signal generator
connected to the antenna terminals of the receiver using a gene-
rator with an effective source impedance of 51.5 ohms.
For input level of 100 v, 30% modulation, 1000 cycles, the
S + N to N ratio shall exceed 30 db.
SSB - The sensitivity of the receiver in the SSB mode over the
specified frequency range shall be such that an r-f input signal
of not more than 1 "hard" microvolt shall produce a signal-plus-
noise-to-noise ratio of 10 db. This sensitivity shall be measured
with the signal generator connected to the antenna terminals of
the receiver using a generator with an effective source impedance
of 51.5 ohms.
The sensitivity under service conditions shall not be degraded
by more than 10 db from those specified above.
3.3.2.4
Selectivity and Response:
The following requirements for overall selectivity of the receiver
shall apply:
ATTENUATION BELOW
TOTAL BANDWIDTH
MODE
MAXIMUM RESPONSE (DB)
(KC PER SECOND)
SSB
5 db
2.7 min.
60 db
6 max.
AM
5 db
6.0 min.
14 max.
60 db
The peak-to-valley ratio shall not be more than 5 db from 300 to
3,000 cps in AM or SSB.
104
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