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500 WATT RADIOBEACON TRANSMITTER
ND2000A-02x-xx0
Page 6-11
15 October 2004
Fig 6-5 RF Drive Output (B- = 50 V dc)
ƒ
c = 330 kHz, Connector P4 Connected
RF Drive Amplifier - A4A4J2 (dc coupled)
Fig 6-6 Not Used
Fig 6-7 Tone Oscillator - CW
ƒ
tone = 1020 Hz, Connector P5 Connected
Keyer PWB - A4A1TP1 (ac coupled)
Fig 6-8 Audio/Keyed Tone - MCW
ƒ
tone = 1020Hz
Modulator Driver PWB A4A2TP3 (dc coupled)
Waveforms - Off Air Troubleshooting (Sheet 2 of 4)