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The MFJ-1025 is designed to cancel noise or interference, or boost signal-to-noise ratio, before the noise affects sensitive receiver circuits. Unlike conventional noise blankers, the MFJ-1025 can be effective on all types of noise, including unwanted signals. The MFJ-1025 provides user adjustment of phase and amplitude of two antenna inputs. Both phase and level is adjustable allowing signals to be combined. The resulting signal product is the vector addition or subtraction of the two antenna inputs.
The circuitry in the MFJ-1025 has exceptional phase amplitude flatness, making adjustments easy and very repeatable. Gain shift with full phase rotation is less than 2 dB, and typically less than 1 dB.
This method of signal enhancement has several advantages over conventional noise blankers. The advantages are:
• Interference can be much stronger than the signal and be completely removed without affecting the desired signal.
• The MFJ-1025 is effective with all types of interference and on all modes.
• Signals can be added instead of subtracted with the simple push of a button.
Effective and proper operation occurs only if the noise (for nulling noise) or the desired signal (for signal enhancement) is present on both the auxullary (AUX) and main antennas.
The MFJ-1025 contains interface circuitry necessary for operation with most modern HF transceivers. It has built in RF sensing, as well as provisions for external keying from an external control line.
Dimensions:
- Height: 6.5 Inches
- Depth: 6.25 Inches
- Width: 6.50 Inches
- Weight: 1.8 Lbs
