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General| Frequency Coverage | 0.5 - 30 MHz |
|---|---|
| Mode | AM, SSB, CW |
| Type | Communications Receiver |
| Image Rejection | 60 dB |
| IF Rejection | 60 dB |
| Power Supply | 12 V DC |
Explains Digital Signal Processing technology and its application in the MFJ-784B.
Provides a summary of the MFJ-784B's features and capabilities.
Presents a diagram illustrating the unit's internal architecture.
Details the arrangement and function of controls on the front panel.
Describes the connections and ports on the rear panel of the unit.
Lists specifications for various digital filters available in the unit.
Details the technical specifications of the MFJ-784B unit itself.
Provides general technical details about the unit's components and performance.
Outlines the input and output signal specifications of the unit.
Guides beginners through the initial installation and operation of the unit.
Details the connections required for the unit's back panel ports.
Explains the fundamental way to connect the unit in an audio path.
Guides on adjusting the input audio level for optimal filter performance.
Describes how to adjust headphone volume using internal jumpers.
Explains methods for passing transmitter sidetone through the DSP filter.
Details the preferred method for connecting the T/R line for sidetone bypass.
Describes the less preferred method of using an internal CW sidetone filter.
Explains how to connect the unit to a TNC for data modes.
Guides on the initial setup and control settings for operating the unit.
Demonstrates how to operate the unit using the CW filter and adjust audio levels.
Explains operation for SSB, AM, and FM voice modes and audio level adjustments.
Details the function of each LED, button, switch, and control on the front panel.
Explains how to save and use favorite filter settings in memory.
Provides step-by-step instructions for saving filter settings into memory.
Describes the feature used to find the center frequency for the CW filter.
Explains how to measure audio tone frequencies using the spotting tone.
Introduces the Talk function for checking filter settings via audio and Morse code.
Details the procedure for activating and using the Talk function.
Explains how internal jumpers control various features like Talk and Auto Notch.
Describes jumper settings for Talk routine pitch and Morse code speed.
Explains jumper settings for controlling the aggressiveness of the auto notch filter.
Discusses jumper settings for Talk and Auto Notch, and returning them to default.
Provides a chart detailing jumper configurations for various settings.
Guides on programming the CW sidetone filter using jumpers.
Explains how to set or reset pre-set filters like RTTY, HF Packet, etc.
A chart showing jumper settings for data mode filters.
Describes the adjustable low reject/high reject filter and its applications.
Explains the band-stop filter that creates a frequency 'hole' by rejecting a range.
Details the adjustable band-pass filter for narrow to wide frequency passing.
Describes the dual band-pass filter for two independent frequency ranges.
Explains the adjustable band-pass filter optimized for CW enthusiasts.
Describes the constant frequency filter for passing CW sidetone.
Details the band-pass filter for voice modes, FSK, and CW.
Explains the pre-set filter for RTTY and FSK with narrow frequency width.
Describes the pre-set filter for packet and wide RTTY with medium frequency width.
Details the pre-set filter for AMTOR, narrow PACTOR, and wide RTTY.
Explains the pre-set filter for PACTOR, narrow packet, and wide RTTY.
Describes the dual band-pass filter for slow scan and facsimile signals.
Explains the filter for removing unwanted tones or heterodynes manually.
Details the filter for automatically removing multiple or shifting tones.
Describes the filter for removing random noises like hiss and background noise.
Explains how filter responses are limited by the unit's frequency range.
Discusses filters where passbands touch, effectively creating a single filter.
Provides instructions for testing the unit's digital circuitry and controls.
Offers solutions for common problems and operational issues.
Provides contact information and advice for obtaining technical support.
Lists available cables for connecting the unit to radios and TNCs.
A chart to record settings for pre-set and memory filters.
