AUDIO INPUT
Impedance input 20 K ohms or 22 ohms, jumper selectable
signal range for full output 10 mV to 1.0 volt, front panel programmable
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AUDIO OUTPUT
Speaker output power 1 watt into 8 ohms at 13.8 VDC, both channels A&B operating
3 watts into 4 ohms at 13.8 VDC, output channels A&B bridged
Line output 0 dB, referenced to input level, into 10K ohms. Not controlled by gain control
Headphone jack 1/4" two circuit jack, use stereo headphones to use all functions, mono headphones for most functions.
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NOISE REDUCTION FILTERS
Frequency range Attenuation Type Delay
Random Noise
Reduction entire freq. range of
selected Up to 20 dB, varies
with
Adaptive 5 msec max
bandpass
filter
noise characteristics.
Noise reduction aggressiveness
front panel adjustable.
Heterodyne
Reduction entire freq. range
of
Up to 50 dB, varies with
Adaptive 5 msec max
(multiple automatic notch) selected bandpass
filter
noise characteristics
(manual notch)
Note: The random noise
reduction and bandpass filters can operate simultaneously.
The
random noise reduction, tone notch and highpass/lowpass filters can operate
simultaneously.
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BANDPASS FILTERS
CW
Filters
Bandwidth = 10 Hz to 600
Hz, 10
Hz steps FIR
Linear
BW less than 20 Hz
Center freq. = 300 to 1600
Hz., 5 Hz
steps
phase
64 msec max
CW Marker Tone Sine wave at center freq. of selected CW
filter.
BW greater 20 Hz 40 msec max
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DATA FILTERS
Bandwidth = 100 Hz to 600
Hz,
40 dB at 60
Hz
FIR Linear 38 msec max
RTTY, AMTOR, 12
steps.
outside the passband phase
PacTOR, G-TOR, Center freq. = 2210 Hz. plus option
HF
Packet
of 1700(default), 1360, 1300, 1530 or
2125 Hz.
SSTV
1100-1300 Hz & 1500-2300
Hz
50 dB at 75 Hz outside the
Composite 21 msec max
passband
FIR Linear
phase
WeFAX
1500-2300
Hz
55 dB at 75 Hz
outside FIR
Linear 21 msec max
the passband
phase
CLOVER
2000-2500
Hz
55 dB at 75 Hz
outside FIR
Linear 21 msec max
the passband
phase
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VOICE FILTERS
Highpass
Corner freq. = 20 to 1000
Hz.,
60 dB at 180
Hz. FIR
Linear
24 msec max
10 Hz.
steps.
outside the passband
phase
for any combination
Lowpass
Corner Freq. = 1000 to 5000
Hz., 60
dB. at 180 Hz.
FIR
Linear
of highpass &
10 Hz.
steps
outside the passband
phase
lowpass Filters
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SIGNAL PROCESSING
A-D/D-A Converter 16 bit linear, sigma-delta conversion, dual channel
Signal Processor 16 bit, 27 ns Analog Devices ADSP-2181 with 80 kb of memory on board
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TEST INSTRUMENT
Audio
Generator
Single or two-tone, Sine wave tunable from 20 Hz to 15 kHz.
Sine wave distortion less than
1%
Audio millivoltmeter
True RMS from 10 uV. to 2 V., 20-20 kHz calibrated in volts, dBm @ 600 ohms,
relative dB
DTMF
decoder
Decodes and displays up to 16 character string of DTMF digits (0-9, *, #, A-D)
CTCS
decoder
Decodes and displays CTCSS "PL" tones from 67.0 Hz to 254.1 Hz
CTCSS
squelch
Open collector output pulls low when selected CTCSS tone is present. (connection
on back panel DIN connector)
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MEMORY
Six Memories All configuration setups can be stored and recalled (except volume control setting)
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DISPLAY 2x16 alphanumeric characters, dot-matrix, yellow-green backlit LCD.
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DIMENSIONS
Size
7.6 in. wide x 8.5 in. deep x 1.9 in. high
Weight 2.0 lb.
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Note: RTTY, AMTOR, PacTOR, G-TOR and HF Packet data filter bandwidths are specified at -3 dB points to comply with traditional data filter specification methods. All other filter bandwidths are specified to comply with conventional DSP FIR filter parametric descriptions.