RADIOBEACON TRANSMITTER
ND500 II (125 WATTS) DOUBLE SIDEBAND - NO VOICE
Page 5-21
15 September 2003
Table 5-2 Functional Test Check List (Continued)
PARA
FUNCTION OBSERVED
TEST RESULTS
TOLERANCES
5.3.6
(f)
RF monitor (no mod)
Accept
¨
Reject
¨
Unmodulated RF waveform
(j)
RF monitor (100% mod)
Accept
¨
Reject
¨
Undistorted, 100% modulated
RF waveform at ground.
(m)
DC current (95% mod)
______Amps
Between 4.5 and 6.5 amperes
125 W, <650 kHz
Between 4.0 and 5.3 amperes
100 W, >650 kHz
(o)
B+ Volts (95% mod)
______VDC
Between 44 and 54 volts DC
(s)
Modulation reading
______%
Between 91 and 99 percent
(u)
Remote audio
______V
Between 4.0 and 6.0 volts peak-
to-peak
(w)
Modulation frequency
______Hz
Between 380Hz and 420Hz or
950Hz and 1050Hz
(y)
Speaker volume
Accept
¨
Reject
¨
Audible level
5.3.7.1
(h)
Identification code
Accept
¨
Reject
¨
Assigned ident
(j)
Code frame duration
______Seconds
Between 7.2 and 8.8 seconds
5.3.7.2
(i)
Standby code '1'
Accept
¨
Reject
¨
See Established Reference
(l)
Standby code '2'
Accept
¨
Reject
¨
See Established Reference
5.3.8.2
Shutdown Threshold
______Watts
Within 5% of Established
(Low RF carrier)
Reference
5.3.8.3
Shutdown Threshold
______%
Within 5% of Established
(Low mod depth)
Reference
5.3.8.4
(g)
Shutdown delay
______Seconds
Within two seconds of
(Loss of keying)
Established Reference
5.3.9
(k)
SWR alarm
______Watts
Between 13.3 and 14.7 watts
(t)
SWR Cutback Threshold
______Watts
No increase
5.3.10
(k)
Overmod Threshold
Accept
¨
Reject
¨
Lamp status on or off
5.3.11
Remote Control Checks
Accept
¨
Reject
¨
Remote controls function
correctly
5.3.13
External DC operation
Accept
¨
Reject
¨
External DC operates correctly
