Look in any amateur radio magazine from Great Britain, Germany, or Denmark and you will quickly realize that the DSP-NIR from DANMIKE is the number one choice of DSP Filters in the European amateur radio community. The DSP-NIR incorporates the latest in 16 bit DSP technology resulting in a filter that is unsurpassed in performance and ease of use. The DSP-NIR has been developed and optimized for amateur radio and professional shortwave reception.
* Digital Signal Processing Noise and Interference Reduction Unit
* Microprocessor Controlled (Digital Signal Processor)
* Latest 16 bit DSP technology
* SSB, CW, Packet, SSTV, RTTY, Notch, PBT, and Peak Filters
* 14 Different Filter Functions
* Automatic multi-tone notch
* Digital linear phase filters with up to 60 dB attenuation
* AGC function (Automatic Gain Control)
* Passband Tuning (PBT) with 300Hz or 2100 Hz bandwidth
* Variable setting of peak filter level
* Integrated AF amplifier with 3.2 watts @ 4 ohms
* Bypass Function
* Easy connection
* Improves reception considerably and removes noise
* Extends your active working time
* 13.8VDC operation
DSP-NIR SPECIFICATIONS:
INPUT INPUT LEVEL: 0.35 Vpp - 7 Vpp adjustable via potentiometer
INPUT IMPEDANCE: 22Ohms or 6 K selectable via internal jumper
A.F. OUTPUT OUTPUTS: Headphone, Line, and Speaker outputs
A.F. AMPLIFIER: 1.8 watts with 8 ohm / 3.2 watts with 4 ohms imp.
DISTORTION: <1% at 1kHz
FILTERS CW BANDWIDTH: 200 Hz CW FILTER CENTER FREQ. 400 Hz, 600 Hz or 750 Hz selectable by internal jumper.
CW ATTEN. IN STOP AREA: > 60dB attenuation.
CW FILTER TYPE: FIR Linear Phase, Passband filter
SSB FILTER PASSBAND: 150 Hz - 1800 Hz.(SSB N) ... 150 Hz - 2700 Hz (SSB W)
SSB SHAPE FACTOR: SSB N: 1.1 : 1, SSB W: 1.1 : 1 > 60 dB attenuation
SSB FILTER TYPE: FIR Linear Phase, Passband Filter
PACKET FILTER RESPONSE: 540 Hz Bandwidth, 2210 Hz center freq.
PACKET SHAPE FACTOR: 1.24 : 1, > 60dB attenuation
PACKET FILTER TYPE: FIR Linear Phase Passband Filter
SSTV FILTER PASSBAND: 1050 Hz. - 1350 Hz and 1460Hz - 2350 Hz
SSTV SHAPE FACTOR BP1: 1.45 : 1, BP2: 1.17 : 1, > 55 dB attenuation
SSTV FILTER TYPE FIR: Linear Phase, Double passband Filter
RTTY FILTER FREQ. AREA: 270 Hz bw, 2210 Hz center frequency
RTTY SHAPE FACTOR: 1.43 : 1, > 60dB attenuation
RTTY FILTER TYPE: FIR Linear Phase, Passband Filter
NOTCH FILTER RESPONSE: 150 Hz - 2700 Hz.
NOTCH ATTEN. 1 KHz TONE: Up to 50 dB - depends on the variable characteristics
of the input signal
NOTCH REACTIONS TIME: < 10 mS
NOTCH FILTER TYPE: Adaptive
PBT FILTER BANDWIDTH: 300 Hz (BT N) or 2100 Hz (PBT W) Selectable
PBT FILTER CENTER FREQ.: Variable 300 to 3200 Hz in 62.5 Hz increments
PBT ATTENUATION: > 60 dB
COMBINATIONS: Notch + Peak
FRONT PANEL: Volume/Power On/Off, 12 position rotary switch, Filter Level Potentiometer, Bypass Switch, AGC On/Off, Headphone Output - Stereo, Power LED, Normal LED, Overflow LED
REAR PANEL:Audio Input Phone Jack, Audio Output Phone Jack, Line Output, Input Level regulator potentiometer, PTT, DC IN
SIZE 60 mm x 193mm x 155 mm (HxWxD) Weight 1.4 kg.
POWER 11 - 15 VDC / 500 mA