5
3. Specifications
AUDIO INPUT
Impedance 2 K ohms or 22 ohms, jumper selectable
AUDIO OUTPUT
Speaker output power 1.6 watts into 8 ohms at 13.8 VDC
2.5 watts into 4 ohms at 13.8 VDC
Line output -6 dB, referenced to input level, into 10K ohms. Not controlled by gain control
Distortion less than 1% at rated output
NOISE REDUCTION FILTERS
Frequency range
Attenuation Type
Delay
Random Noise Reduction entire freq. range of Up to 20 dB, varies with Adaptive 5 msec max
selected bandpass filter noise characteristics.
Noise reduction aggressiveness
jumper programmable.
Tone Noise Reduction entire freq. range of Up to 50 dB, varies with Adaptive 5 msec max
(multiple automatic notch) selected bandpass filter noise characteristics
Note: The random noise reduction and bandpass filters can operate simultaneously.
The random noise reduction, tone notch and highpass/lowpass filters can operate simultaneously.
CW FILTERS
CW filters Bandwidth = 25 Hz to 600 Hz, 60 dB at 50 Hz FIR Linear 30 msec max
15 steps. outside the passband phase
Center freq. = 400 to 1000 Hz.,
50 Hz. steps,
Optional Collins Bandwidth = 25 Hz to 600 Hz, 55 dB at 75 Hz FIR Linear 18 msec max
KWM-2 center freq. = 1350, 1500 or 1750 Hz. outside the passband phase
& S-Line filters
CW Marker Tone Sine wave at center freq. of selected CW filter.
Sine wave distortion less than 1%.
DATA FILTERS
RTTY,
Bandwidth = 100 Hz to 600 Hz, 40 dB at 60 Hz FIR Linear 18 msec max
AMTOR, 12 steps. outside the passband phase
PACTOR, Center freq. = 2210 Hz. plus option
G-TOR, of 1700(default), 1360, 1300, 1530 or
& HF Packet 2125 Hz.
SSTV 1100-1300 Hz & 1500-2300 Hz. 50 dB at 75 Hz Composite 18 msec max
outside the passband FIR
Linear phase
WEFAX 1500-2300 Hz. 55 dB at 75 Hz FIR 18 msec max
outside the passband Linear phase
CLOVER 2000-2500 Hz. 55 dB at 75 Hz FIR Linear 18 msec max
outside the passband phase
Note: RTTY, AMTOR and PACTOR (100-350 Hz.) filters have a notch at the center frequency.
FSK Marker Tone Sine waves at mark-space freq. of selected data filter (170 or 200 Hz. shift).
Sine wave distortion less than 1%.
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