General information
HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual 2-9
Protection
Safe under all load conditions by limiting reflected power to
10 W PEP and limiting PA transistor collector voltage swing
Thermal protection against excessive heatsink temperature
AF response
Overall response of microphone and transmitter rises
approximately 6 dB/octave 300 to 2700 Hz
Electrical input -6 (-8) dB, 300 to 2600 Hz
Ripple 2 (4) dB PP, 500 to 2500 Hz
Spurious and
harmonic emissions
Better than 55 (45) dB below PEP
Carrier suppression
60 (50) dB below PEP
Unwanted sideband
70 (55) dB below PEP (400 Hz)
70 (65) dB below PEP (1 kHz)
Intermodulation
(Two-tone test)
100 W: 30 (26) dB below each tone, 36 (32) dB below PEP
125 W: 27 (26) dB below each tone, 33 (32) dB below PEP
ALC
A 10 dB increase in signal input above compression threshold
produces less than 0.5 dB increase in power output
Maximum ALC range greater than 30 dB
ALC attack time approximately 1 ms
Microphone
Dynamic type
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