Offered here is a MFJ-998 IntelliTuner automatic antenna tuner in very good condition, sourced from a clean lab environment and thoroughly tested.
This unit presents extremely well, with a clean faceplate and unusually bright white buttons, suggesting light use. The overall condition is consistent with a low-duty-cycle, “set it and forget it” setup, typical of controlled lab or technical environments.
Testing & Functionality (SEE VIDEO)
-
Powers on properly with included OEM adapter
-
Relay clicks confirmed when adjusting capacitance and inductance
-
Menu navigation fully functional
-
Self-calibration test executed successfully (needle response observed)
-
No abnormal behavior during operation
Video demonstration included showing live operation and testing.
What’s Included
-
MFJ-998 IntelliTuner unit
-
Original-style manufacturer power adapter
-
Printed color user manual (ready for immediate use)
Condition Notes
-
Very clean faceplate
-
Minimal scratching/scuffing on body (see photos)
-
Buttons are bright white and not yellowed
-
Overall very good condition with excellent presentation
Assurance
This unit has been fully tested and is guaranteed functional.
-
30-day returns accepted (DOA / not as described)
-
Tamper-evident asset label applied and recorded for identification
-
Unit may include discreet verification markings
Buy with confidence.
Seller Note
Clean, tested units with included accessories and documentation are becoming harder to find. This is a strong example that’s ready for immediate use.
Be sure to check our store for additional radio and technical equipment.
⚙️ Technical Overview & Features
The MFJ-998 IntelliTuner is a high-performance automatic antenna tuner designed for serious amateur radio operators who want fast, efficient matching across a wide range of antennas and operating conditions.
-
Wide Tuning Range: Handles a broad impedance range, making it ideal for mismatched or multi-band antennas
-
High Power Capability: Rated for up to 1,500 watts PEP SSB / 1,000 watts CW, suitable for demanding HF setups
-
Fast Automatic Matching: Quickly tunes and stores settings for previously used frequencies for near-instant recall
-
IntelliTuner™ Technology: Continuously monitors SWR and automatically retunes as conditions change
-
Large Cross-Needle Meter: Provides clear, real-time SWR and power readings at a glance
-
Multiple Operating Modes: Automatic, semi-automatic, and manual control options
-
Built-In Memories: Stores thousands of frequency/match combinations for efficient operation
-
Versatile Compatibility: Works with a wide variety of coax-fed antennas, including difficult loads