RADIOBEACON TRANSMITTER
ND500II (125 WATTS) DOUBLE SIDEBAND - NO VOICE
Contents (Page 2)
01 November 2003
TABLE OF CONTENTS
(Continued)
Section
2
THEORY OF OPERATION
(Continued)
2.2.6.9
Reflected Power/Refl Pwr Cal....................................................................... 2-10
2.2.6.10
SWR Protection............................................................................................ 2-10
2.2.6.11
Battery Control ............................................................................................. 2-11
2.2.6.12
Mod% Control............................................................................................... 2-11
2.2.6.13
Bypass Control ............................................................................................. 2-12
2.2.7
HARMONIC FILTER (A7) ................................................................................... 2-12
2.2.7.1
Current Probe ............................................................................................... 2-12
2.2.7.2
Forward/Reflected Power Probe ................................................................... 2-12
2.2.7.3
RF Monitor Switching.................................................................................... 2-12
2.2.8
RF SYNTHESIZER PWB (A9) ............................................................................ 2-13
2.2.9
24-48V POWER SUPPLY PWB (A10, Optional))................................................ 2-13
2.2.10
REMOTE INTERFACE PWB (A11)..................................................................... 2-13
2.2.11
SHUNT TUNING INDUCTOR (L2) ...................................................................... 2-13
3
INSTALLATION AND PREPARATION FOR USE
3.1
GENERAL ................................................................................................................. 3-1
3.2
TEST EQUIPMENT .................................................................................................... 3-1
3.3
SITE REQUIREMENTS .............................................................................................. 3-1
3.3.1
LIGHTNING/SAFETY GROUND........................................................................... 3-1
3.3.2
ANTENNA SYSTEM ............................................................................................. 3-1
3.3.3
ELECTRICAL POWER ......................................................................................... 3-1
3.3.3.1
AC Power Requirements................................................................................. 3-1
3.3.3.2
DC Power Requirements ................................................................................ 3-1
3.3.4
ELECTRICAL POWER CABLING......................................................................... 3-1
3.3.5
RF OUTPUT CABLE............................................................................................. 3-1
3.3.6
CONTROL/MONITOR CABLING .......................................................................... 3-2
3.3.7
19-INCH MOUNTING RACK................................................................................. 3-2
3.3.8
EXTERNAL ALARM/STATUS MONITORING FEATURES ................................... 3-2
3.3.8.1
Shutdown Alarm ............................................................................................. 3-2
3.3.8.2
High SWR Alarm ............................................................................................ 3-2
3.3.8.3
Battery Status ................................................................................................. 3-2
3.3.9
VENTILATION ...................................................................................................... 3-2
3.3.10
HEATING ............................................................................................................. 3-2
3.3.11
WORK AREA ....................................................................................................... 3-2
3.4
UNPACKING .............................................................................................................. 3-2
3.5
ANCILLARY PARTS .................................................................................................. 3-3
3.6
USER ASSIGNED INFORMATION............................................................................. 3-3
3.6.1
CARRIER FREQUENCY ...................................................................................... 3-3
3.6.2
KEYED TONE FREQUENCY................................................................................ 3-3
3.6.3
IDENTIFICATION CODE ...................................................................................... 3-3
3.6.4
STANDBY CODES ............................................................................................... 3-3
3.6.5
MEAN LEVEL OF AC POWER SOURCE ............................................................. 3-3
3.7
PARTS REQUIRED BUT NOT SUPPLIED................................................................. 3-3
3.8
PRE INSTALLATION PROCEDURES........................................................................ 3-3
3.8.1
DISASSEMBLY REQUIRED ................................................................................. 3-3
3.8.2
VISUAL INSPECTION .......................................................................................... 3-3
3.8.3
POWER TRANSFORMER A1T1 TAP SELECTION.............................................. 3-4
3.8.3.1
Primary Winding Taps .................................................................................... 3-4
3.8.3.2
Secondary Winding Taps................................................................................ 3-4
