MIL-PRF-27/323C
TABLE I. Electrical ratings.
Dash
Circuit
Primary
Primary
Maximum
Secondary
Secondary
Maximum
Return
Frequency
DCR
no.
Diagram
impedance
unbalanced
DCR
impedance
output
loss
response
(ohms)
±25%
dc current
±25%
(ohms)
power
min.
(dB)
(ohms)
(mA)
(ohms)
(mW)
(dB)
±.50
25
5
35
600
0
33
600
A
01
±.70
10
10
51
600 CT
70
44
600 CT
C
02
±.75
10
10
21
600 CT
100
32
600 CT
B
03
±.75
10
10
21
600 CT
120
22
600 CT
B
04
±.50
11
10
52 (5-6)
600/600
100
48 (1-2)
600 Split
D
05
52 (7-8)
43 (3-4)
91 (9-10)
Return loss: When measured in accordance with MIL-STD-188-200 over the frequency range of 300
Hz to 4,000 Hz, the return loss shall be as specified in table I.
Longitudinal balance: When measured in accordance with FCC68.310 over the frequency range of
300 Hz to 4,000 Hz, the longitudinal balance shall be 60 dB minimum.
Transhybrid loss (dash no. 05 only): When tested in accordance with figure 2, the transhybrid loss
shall be 60 dB minimum.
No load (center-tap voltage unbalance) (applicable to circuit diagrams B and C): 1 percent maximum
at 1 kHz with the specified dc current flowing in the primary with the following primary voltage applied:
Dash no.
Primary voltage (volts)
02
2.4
03
2.4
04
3.0
Polarity: Shall be additive with the following terminals connected:
Polarity additive
Dash no.
with the following
terminals connected
4 and 5
01
4 and 6
02
7 and 8
03, 04
2 and 3, 4 and 5
05
6 and 9, 10 and 7
Marking location: See figure 1.
Part or Identification Number (PIN): M27/322-(dash number from table I and figure 1).
4
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