MFJ-969 Deluxe Versa Tuner II

Technical Specifications

• Frequency Coverage Matrix: Complete matching across 160, 80, 40, 30, 20, 17, 15, 12, 10, and 6-meter bands (1.8 MHz through 54 MHz continuous).
• RF Power Rating Capacity: Engineered for up to 300 Watts PEP peak load limits.
• Tuning Circuit Design: Wide-range T-network configuration paired with a continuous Air-Core roller inductor and a 3-digit turns counter mechanism for precise tuning recall.
• Antenna Selector Switch: 6-position heavy-duty selector matrix handling Coax 1 (Direct/Tuned), Coax 2 (Direct/Tuned), Random Wire/Balanced Line, and an integrated internal 50 Ohm Dummy Load port.
• Internal Dummy Load: Built-in 50-Ohm air-cooled dummy load designed for safe offline transmitter tune-ups.
• Balun Integration: Heavy-duty 4:1 internal voltage balun configured directly for balanced feedline arrays.
• Visual Metering Array: Illuminated Cross-Needle SWR/Wattmeter module tracking Forward Power (30W/300W ranges), Reflected Power, and SWR simultaneously.

Station Role

The MFJ-969 Deluxe Versa Tuner II functions as a highly flexible manual impedance matching matrix for the W8USR station console. It bridges our primary HF/6m transceivers to various antenna layouts, including long wire networks and balanced ladders, ensuring peak power transfer and minimizing transmitter stress.

History with Radio W8USR

Deployed as a key manual matching asset on the W8USR operating deck, the MFJ-969 has tuned across a wide variety of experimental wire setups and 6-meter arrays over the years. Its integrated dummy load and rugged roller inductor design make it an exceptionally durable, reliable benchmark tool for day-to-day operations.