Page 32 of MFJ 2006 Catalog by MFJ Enterprises, Inc.

32 www.mfjenterprises.com Wipe out noise and interference before it gets into your receiver with a 60 dB null! Eliminate all types of noise severe power line noise from arcing transformers and insulators, fluorescent lamps, light dimmers, touch controlled lamps, computers, TV birdies, lightning crashes from distant thunderstorms, electric drills, motors, industrial processes. Its more effective than a noise blanker because interference much stronger than your desired signal can be completely removed without affecting your signal. It works on all modes -- SSB, AM, CW, FM, frequences from BCB to lower VHF. Null out strong QRM on top of weak rare DX and then work him! You can null out a strong local ham or AM broadcast station to prevent receiver from overloading. Use MFJ-1026 as an adjustable phasing network. You can combine two antennas to give you various directional patterns. Null out a strong interfering signal or peak a weak signal at a push of a button. Easy-to-use! Plugs between transmitting antenna and transceiver. To null, adjust amplitude and phase controls for minimum S-meter reading or lowest noise. To peak, push reverse button. Use built-in active antenna or an external one. MFJs exclusive Constant Amplitude Phase Control TM makes nulling easy. RF-sense T/R switch automatically bypasses your transceiver when you transmit. Adjustable delay time. 12 VDC or 110 VAC with MFJ-1312D, $14.95. Measures 6 X1 X6 inches. MFJ-1025, $159.95. Like MFJ-1026 less built-in active antenna, use external antenna. Same size, power requirements. MFJ Tunable, Programmable Brick Wall DSP Filter MFJs tunable super DSP filter automatically eliminates heterodynes, reduces noise and interference simultaneously on SSB, AM,CW, packet, AMTOR, PACTOR, RTTY, SSTV, WeFAX, FAX, weak signal VHF, EME, satellite. You get MFJs tunable FIR linear phase filters that minimize ringing, prevent data errors and have brick wall filter response with up to 57 dB attenuation 75 Hz away. Only MFJ gives you 5 tunable DSP filters. You can tune each lowpass, highpass, notch, and bandpass filter including optimized SSB and CW filters. You can vary the bandwidth to pinpoint and eliminate interference. Only MFJ gives you 5 factory pre-set filters and 10 programmable pre-set filters that you can customize. Instantly remove QRM with a turn of a switch! MFJs automatic notch filter searches for and eliminates multiple heterodynes. You also get MFJs advanced adaptive noise reduction. It silences background noise and QRN so much that SSB signals sound like FM. The automatic notch and adaptive noise reduction can be used with all relevant tunable pre-set filters. Automatic gain control (AGC) keeps audio level constant during signal fade. Tunable bandpass filters Narrow band signals like CW RTTY jump out of QRM when you switch in MFJs tunable FIR bandpass filters. You can tune the center frequency from 300 to 3400 Hz, and vary the bandwidth from 30 Hz to 2100 Hz from super-tight CW filters to wide razor-sharp Data filters. You can use two tunable filters together. For example, tune one to mark, one to space and set bandwidth tight for a super sharp RTTY filter. You can tune the lower cutoff frequency 200 to 2200 Hz and the upper cutoff frequency 1400 to 3400 Hz. This lets you create custom filters for voice, data and other modes. Signals just 75 Hz away literally disappear they are reduced 57 dB! Automatic notch filter MFJs automatic notch filter searches for and eliminates multiple heterodynes in milli-seconds. Its so fast, that even interfering CW and RTTY signals can also be eliminated. Selectively remove unwanted tones using the two manually tunable notch filters an MFJ exclusive. Knock out unwanted CW stations while youre on CW. Adaptive Noise Reduction Noise reduction works in all filter modes and on all random noise white noise, static, impulse, ignition noise, power line noise, hiss. The LMS algorithm gives you up to 20 dB of noise reduction. Noise reduction is adjustable to prevent signal distortion. 15 Pre-set filters, or customize You can select from 15 pre-set filters. Use for SSB, AM, CW, packet, AMTOR, PACTOR, RTTY, SSTV, WeFAX, FAX or any mode. If you dont like our pre-set filters, you can program your own an MFJ exclusive! Save center frequency/bandwidth, lowpass/highpass cutoffs, auto/manual notch, noise reduction all filter settings in 10 programmable filters. More MFJ DSP Filter Features MFJs tunable Spotting Tone TM accurately tunes even the narrowest CW filter. MFJs exclusive Adaptive Tuning TM -tuning rate automatically becomes finer as you narrow bandwidth makes narrow filters easy-to-use. MFJs exclusive FilterTalk TM sends precise filter settings in Morse code. Automatic notch with variable aggressiveness, quieter 2 1/2 Watt audio amplifier, speaker switch keeps phones always active. Manual and auto notch can be used together. Noise reduction, automatic notch custom filter saved in memory is selected. Accurate easy-to-use input level indicator, improved manual notch in the CW mode, adjustable line level output, more Mark-Space frequencies and baud rates for data filters and automatic bypass during transmit for monitoring CW sidetone, voice/data by sensing the PTT line. A push-button bypasses your filter lets you hear the entire unfiltered signal.2 1/2 W amplifier, volume control, input level control, speaker jack, PTT sense line, line level output. Measures 9 1/2x2 1/2x6 inches. Plugs between your transceiver or receiver and external speaker or headphones. 12 VDC or 110 VAC with MFJ-1312D, $14.95. Cable Pack, MFJ-5184, $7.95. Includes receiver cable, DC cable, 2 open-end TNC cables and power plug. MFJ-1026 $179 95 Ship Code A MFJ-784B $249 95 Ship Code B MFJ Noise-Canceling Filters Wipe Out Interference Add DSP to any Multimode MFJ-781, $129.95. Add DSP filtering to any TNC/multmode data controller. Copy signals buried in QRM. AGC, On/Off Bypass. Plugs between rig multimode. 4 1/2x2 1/2x5 . MFJ-780, $99.95. Brick Wall DSP filtering for MFJ-1278/B multi-mode. Copy signals that other multi-modes cant. Soldering is required for this plug-in board. MFJ-752C, $99.95. All mode dual tunable filter has variable bandwidth 40 Hz to almost flat, eliminates noise and heterodynes notch depth to 70 dB, inputs for two rigs, selectable, noise limiter, plus more. MFJ-752C measures 10x2x6 inches. MFJ-722, $79.95. MFJ SSB/CW tunable 70 dB notch filter. Has 8 poles active IC filtering, uses cascaded low-Q stages. 3 bandwidths: 80/110/180 Hz. Center frequency: 750 Hz. Up to 15 dB. 5 1/2x2 1/2x5 . MFJ-751B, $69.95. Zero in SSB/CW with tunable peak/notch filters. Tune 300-3000 50 dB notch. Tiny 1 3/4x4 3/4x5 inches fits anywhere. MFJs SSB/CW Audio Filters WIPE Out Noise!

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