Audio Filters - universal-radio.com · It features two monolithic 2.5 watt IC amps to drive...
1
Audio Filters Universal Radio, Inc. Info.: 614 866-4267 651-B Lakeview Plaza Blvd. Orders: 800 431-3939 Worthington, Ohio 43085 www.universal-radio.com Quality Equipment Since 1942 Page 28 MFJ-784B The MFJ-784B tunable DSP audio filter can simul- taneously eliminate heterodynes, reduce noise and reduce interference in nearly any mode. You get 5 tunable DSP filters, plus 10 programmable filters. The automatic notch zaps hets, adaptive noise reduction reduces fatigue and the highpass- lowpass and tunable bandpass filters give you effective tools to dig out the weak ones. Requires 10-16 VDC @500mA (MFJ-1312D). 9.5 x 2.5 x 6". MFJ-784B Order #3470 $ 249.95 MFJ-1312D Order #2433 $ 17.95 The versatile MFJ-616 filter increases speech intel- ligibility. It features two monolithic 2.5 watt IC amps to drive hi-fidelity speakers (not provided). Elimi- nate hum, buzzes, poor frequency response, low power. Works with SSB, FM, AM — any voice mode. The front panel has: Volume, Balance, 300 Hz, 600 Hz, 1200 Hz and 2400 Hz, Bypass, Input A/ B, Speaker On/Off, Power and a ¼ inch stereo headphone jack. Back panel has RCA input A and B. 10 x 2.5 x 6 inches. Requires 13.8 VDC at 1.5A or optional MFJ-1316. MFJ-616 Order #2377 $ 169.95 MFJ-1316 Order #1469 $ 21.95 MFJ-616 The latest West Mountain Radio CLRdsp in- stalls between your radio and your station's speaker. It features a ClearSpeech ® DSP noise reduction processor with 7 watt amplifier. It has knobs for tone, volume and filtering amount. A red LED indicates overload "clipping". The front panel has a 1/8 inch headphone jack (settable to mono or stereo). The rear panel has jacks for: 12 VDC DC input, 1/8 inch mono audio input jack, 1/8 inch mono external speaker jack, low level input jack for portable shortwave receivers and line level output jack for connection to a computer sound card or for recording. 4.25 x 1.25 x 5.75 inches. The CLRdsp comes with a 6 foot power cable with Powerpole ® connectors and two 6 foot audio cables with 1/8 inch stereo plugs at each end. Requires 12 VDC at 1.1 Amps. CLR/dsp Order #2225 $ 199.95 The Gap Hear It is a compact speaker with digital signal processing that reduces noise to improve the signal to noise ratio and speech clarity for AM, FM or SSB. A front mounted bi-color LED shows you when the speaker is drawing power (red) and when it is processing (green). The rear panel features a rotary switch used to set the 8 levels of noise cancelling. It also has the DC input jack for the required 12-28 VDC. With audio cable to mini plug. 4.5 x 3.8 x 2.3". MkIII version. HIS Order #0749 $ 167.95 HEAR IT MFJ-781 The MFJ-781 is an external DSP filter for any TNC or Multimode data controller. Copy signals buried in noise and QRM - signals you can't even hear! MFJ- 781 gives you an arsenal of 100 incredibly sharp No-Ring linear phase FIR filters. This filter plugs between radio and TNC (RCA phono jacks). Input/ output level controls. Accurate input level indicator. AGC, on/off bypass switch, built-in automatic self test. This item requires 10-16 VDC @500 mA. The optional MFJ-1312D power supply is suggested. 4.5 x 2.2 x 6 inches. MFJ-781 Order #3467 $ 119.98 MFJ-1312D Order #2433 $ 17.95 CLRdsp MFJ-752D The MFJ-752D Signal Enhancer II is a dual tun- able audio filter suitable for amateur and SWL use. The primary filter is a two section, four-pole vari- able filter with Peak, Notch, Low Pass and High Pass functions. There is also an auxiliary filter which is a single section two- pole Peak and Notch filter which allows you to remove interference while enhancing the desired signal. The filter is bypassed when the unit is off. The rear panel has dual, selectable audio input jacks (RCA phono) and speaker out (RCA phono) plus a 3.5mm mini headphone jack. Requires 9-15 VDC @300 mA or optional MFJ-1312D. 9.5 x 2.5 x 4.5". MFJ-752D Order #5640 $ 109.95 MFJ-1312D Order #2433 $ 17.95 The MFJ-722B is a SSB/CW tunable 70dB notch audio filter. It has an eight pole active IC filter and uses cascaded low-Q stages. In the CW mode, four bandwidths are featured: 80, 110, 150 and 180 Hz. The center frequency is 450 Hz up to 15 dB. Requires 12 VDC. MFJ-1312D suggested. MFJ-722B Order #5801 $ 89.95 MFJ-1312D Order #2433 $ 17.95 MFJ-722B DSPKR The Gap (bhi) DSPKR features a 10 Watt RMS amplifier for superb audio that is coupled with fully adaptive noise cancelling 9 - 24dB via 7 user selectable noise cancelling levels. Everything is controlled by simple pushbutton operation. A vol- ume control is featured on top. There is even a sleep mode to conserve battery power. It can handle up to 6 watts of audio input. Auxiliary output jack for headphones or loudspeaker (nei- ther included). Supplied with 3.5mm audio input cable and fused DC power cable to 2.1mm plug. Requires 10 - 16 VDC (1 Amp min. 2 Amp max). 5.32 x 5.15 x 3.35" 30 ounces. List $ 199.00 Order #1243 $ 184.98 PRAS The Heil PRAS Parametric Receive Audio System is a state-of-the-art device that enhances the audio of amateur, shortwave, commercial and CB radios. It allows radio operators to modify, shape, and improve their receive audio using three sepa- rate equalization controls. The controls are easy to use. Midrange frequencies are the most critical for achieving clear voice articulation. Operators can adjust the parametric midrange filter ±15dB from 400Hz to 4kHz, with the recommended sweet spot being at 2.5 kHz. Combined with a low- frequency filter down to 160 Hz, and a high- frequency filter up to 6 kHz, you get unparalleled control and quality of your receive audio. The PRAS rear panel has three audio inputs: XLR and 1/8” , and an 8 ohm input that can be used with the 8 ohm speaker output of any receiver. Includes Heil HPS-5 two-way, powered speaker (shown). List $ 499.00 Order #1060 $ 479.95 MFJ-1312D
Transcript of Audio Filters - universal-radio.com · It features two monolithic 2.5 watt IC amps to drive...
Audio Filters
Universal Radio, Inc. Info.: 614 866-4267651-B Lakeview Plaza Blvd. Orders: 800 431-3939Worthington, Ohio 43085 www.universal-radio.com
Quality Equipment Since 1942Page 28
MFJ-784B
The MFJ-784B tunable DSP audio filter can simul-taneously eliminate heterodynes, reduce noiseand reduce interference in nearly any mode. Youget 5 tunable DSP filters, plus 10 programmablefilters. The automatic notch zaps hets, adaptivenoise reduction reduces fatigue and the highpass-lowpass and tunable bandpass filters give youeffective tools to dig out the weak ones. Requires10-16 VDC @500mA (MFJ-1312D). 9.5 x 2.5 x 6".MFJ-784B Order #3470 $249.95MFJ-1312D Order #2433 $17.95
The versatile MFJ-616 filter increases speech intel-ligibility. It features two monolithic 2.5 watt IC ampsto drive hi-fidelity speakers (not provided). Elimi-nate hum, buzzes, poor frequency response, lowpower. Works with SSB, FM, AM — any voicemode. The front panel has: Volume, Balance, 300Hz, 600 Hz, 1200 Hz and 2400 Hz, Bypass, Input A/B, Speaker On/Off, Power and a ¼ inch stereoheadphone jack. Back panel has RCA input A andB. 10 x 2.5 x 6 inches. Requires 13.8 VDC at 1.5Aor optional MFJ-1316.MFJ-616 Order #2377 $169.95MFJ-1316 Order #1469 $21.95
MFJ-616
The latest West Mountain Radio CLRdsp in-stalls between your radio and your station'sspeaker. It features a ClearSpeech® DSP noisereduction processor with 7 watt amplifier. It hasknobs for tone, volume and filtering amount. A redLED indicates overload "clipping". The front panelhas a 1/8 inch headphone jack (settable to monoor stereo). The rear panel has jacks for: 12 VDCDC input, 1/8 inch mono audio input jack, 1/8 inchmono external speaker jack, low level input jackfor portable shortwave receivers and line leveloutput jack for connection to a computer soundcard or for recording. 4.25 x 1.25 x 5.75 inches.The CLRdsp comes with a 6 foot power cable withPowerpole® connectors and two 6 foot audiocables with 1/8 inch stereo plugs at each end.Requires 12 VDC at 1.1 Amps.CLR/dsp Order #2225 $199.95
The Gap Hear It is a compact speaker with digitalsignal processing that reduces noise to improvethe signal to noise ratio and speech clarity for AM,FM or SSB. A front mounted bi-color LED showsyou when the speaker is drawing power (red) andwhen it is processing (green). The rear panelfeatures a rotary switch used to set the 8 levels ofnoise cancelling. It also has the DC input jack forthe required 12-28 VDC. With audio cable to miniplug. 4.5 x 3.8 x 2.3". MkIII version.HIS Order #0749 $167.95
HEAR IT
MFJ-781
The MFJ-781 is an external DSP filter for any TNCor Multimode data controller. Copy signals buried innoise and QRM - signals you can't even hear! MFJ-781 gives you an arsenal of 100 incredibly sharpNo-Ring linear phase FIR filters. This filter plugsbetween radio and TNC (RCA phono jacks). Input/output level controls. Accurate input level indicator.AGC, on/off bypass switch, built-in automatic selftest. This item requires 10-16 VDC @500 mA. Theoptional MFJ-1312D power supply is suggested.4.5 x 2.2 x 6 inches.MFJ-781 Order #3467 $119.98MFJ-1312D Order #2433 $17.95
CLRdsp
MFJ-752D
The MFJ-752D Signal Enhancer II is a dual tun-able audio filter suitable for amateur and SWL use.The primary filter is a two section, four-pole vari-able filter with Peak, Notch, Low Pass and HighPass functions. There is also an auxiliary filterwhich is a single section two- pole Peak and Notchfilter which allows you to remove interferencewhile enhancing the desired signal. The filter isbypassed when the unit is off. The rear panel hasdual, selectable audio input jacks (RCA phono)and speaker out (RCA phono) plus a 3.5mm miniheadphone jack. Requires 9-15 VDC @300 mA oroptional MFJ-1312D. 9.5 x 2.5 x 4.5".MFJ-752D Order #5640 $109.95MFJ-1312D Order #2433 $17.95
The MFJ-722B is a SSB/CW tunable 70dB notchaudio filter. It has an eight pole active IC filter anduses cascaded low-Q stages. In the CW mode,four bandwidths are featured: 80, 110, 150 and180 Hz. The center frequency is 450 Hz up to 15dB. Requires 12 VDC. MFJ-1312D suggested.MFJ-722B Order #5801 $89.95MFJ-1312D Order #2433 $17.95
MFJ-722B
DSPKR
The Gap (bhi) DSPKR features a 10 Watt RMSamplifier for superb audio that is coupled with fullyadaptive noise cancelling 9 - 24dB via 7 userselectable noise cancelling levels. Everything iscontrolled by simple pushbutton operation. A vol-ume control is featured on top. There is even asleep mode to conserve battery power. It canhandle up to 6 watts of audio input. Auxiliaryoutput jack for headphones or loudspeaker (nei-ther included). Supplied with 3.5mm audio inputcable and fused DC power cable to 2.1mm plug.Requires 10 - 16 VDC (1 Amp min. 2 Amp max).5.32 x 5.15 x 3.35" 30 ounces.List $199.00 Order #1243 $184.98
PRAS
The Heil PRAS Parametric Receive Audio Systemis a state-of-the-art device that enhances theaudio of amateur, shortwave, commercial and CBradios. It allows radio operators to modify, shape,and improve their receive audio using three sepa-rate equalization controls. The controls are easyto use. Midrange frequencies are the most criticalfor achieving clear voice articulation. Operatorscan adjust the parametric midrange filter ±15dBfrom 400Hz to 4kHz, with the recommendedsweet spot being at 2.5 kHz. Combined with a low-frequency filter down to 160 Hz, and a high-frequency filter up to 6 kHz, you get unparalleledcontrol and quality of your receive audio. ThePRAS rear panel has three audio inputs: XLR and1/8” , and an 8 ohm input that can be used with the8 ohm speaker output of any receiver. IncludesHeil HPS-5 two-way, powered speaker (shown).List $499.00 Order #1060 $479.95
MFJ-1312D
