3
2. SPECIFICATION
AUDIO INPUT
Impedance 22 Ohms default setting or 10,000 Ohms, jumper slectable
AUDIO OUTPUT
Speaker output power 1.6 watts into 8 ohms at 13.8 VDC
3.2 watts into 4 ohms at 13.8 VDC
Distortion less than 1% at rated output
VOICE FILTERS
Frequency range Attenuation Type Delay
Random Noise Reduction entire freq. range of Up to 20 dB, varies with Adaptive 10 ms max.
selected Bandpass filter noise characteristics
Tone Noise Reduction entire freq. range of Up to 50 dB, varies with Adaptive 10 ms max.
(automatic notch) selected Bandpass filter noise characteristics
Bandpass - Voice 300 Hz - 3.4 kHz, 60 dB at 180 Hz FIR Linear 10 ms max
300 Hz - 2.7 kHz, outside the passband phase
and 300 Hz - 2.1 kHz,
or (jumper selectable)
300 Hz - 2.7 kHz,
300 Hz - 2.3 kHz,
and 300 Hz - 1.9 kHz
Note: The random noise reduction, tone notch and voice Bandpass filters can operate simultaneously.
CW FILTERS
Bandpass - CW Bandwidth = 100 Hz, 60 dB at 50 Hz FIR Linear 30 msec max
200 Hz and 500 Hz. outside the passband phase
Center freq. = 600 Hz. & 750 Hz. ,
or (jumper selectable)
400 Hz. & 500 Hz.
Random Noise Reduction entire freq. range of Up to 20 dB, varies with Adaptive 10 ms max.
selected Bandpass filter noise characteristics
Note: The random noise reduction and CW Bandpass filters can operate simultaneously.
SIGNAL PROCESSING
A-D/D-A Converter 16 bit linear, sigma-delta conversion
Signal Processor 16 bit, 81ns Analog Devices ADSP-2105
CONTROLS
FRONT PANEL REAR PANEL
Volume/power on-off Audio In put Phono jack - RCA style
Bypass switch Speaker Audio Output Phono jack - RCA style
Voice/CW switch Power In 5.5 mm / 2.1 mm power jack (center pin positive +)
Random Noise Reduction
Tone Noise Reduction
Filter bandwidth (2)
Overload LED (red)
Normal LED (yellow)
DIMENSIONS
Size 6.0 in. wide x 6.0 in. deep x 1.75 in. high (153 mm wide x 153 mm deep x 45 mm high)
Weight 2 lb. (0.9 Kg.)
POWER
12-16 VDC @ 1000 ma
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