Page 8 of MFJ 2006 Catalog by MFJ Enterprises, Inc.

8 www.mfjenterprises.com The MFJ-974HB is a fully balanced true balanced line antenna tuner. It gives you superb current balance throughout its very wide matching and frequency range. Johnson Matchbox For decades, the Johnson Matchbox has been the standard of comparison for balanced line tuners. But, it had a severely limited matching range and covered only 80, 40, 20, 15 and 10 Meters. The MFJ-974HB is its successor. It meets today's needs and even surpasses the Johnson Matchbox outstanding performance. Everything You Need The MFJ-974HB gives you excellent current balance, very wide matching range(12-2000 Ohms) and covers 1.8 through 54 MHz continuously including all WARC bands, 160 Meters, 6 Meters and the new 60 Meter band. Handles 300 Watts SSB PEP and 150 Watts CW. Tuning is fast and easy just three tuning controls. You can even adjust for highly efficient broadband low-Q operation or use higher Q when you encounter extreme loads. A large three-inch lighted Cross-Needle SWR/Wattmeter lets you read SWR, peak or average forward and reflected power all at a glance on 300 or 30 Watt ranges. A ground post is provided to ground one output terminal so you can also tune random wires and coax fed antennas. Compact 7 Wx6Hx8D inches fits anywhere. Tunes any Balanced Line The MFJ-974HB tunes any balanced lines including 600 Ohm open wire line, 450/300 Ohm ladder lines, 300/72 Ohm twin lead shielded or unshielded. Superb current balance minimizes feedline radiation that can cause troublesome TVI and RFI, painful RF bites, mysterious RF feedback problems and radiation pattern distortion. Excellent Balance, Excellent Design The MFJ-974HB is a fully balanced wide range T-Network using four gear driven 1000-Volt air variable capacitors and high-Q air wound tapped inductor for 80- 10 Meters and separate inductors for 6 and 160 Meters. The tuning components are mounted symmetrically to insure electrical balance. A 1:1 current balun is placed on the low impedance 50 input side to convert the balanced T-Network to unbalanced operation. The balun is made of 50 ferrite beads on RG-303 Teflon coax to give exceptional and efficient isolation. It stays cool even at maximum power. Balanced Line Extremely Low Loss Balanced lines give extremely low loss. Doublet, horizontal loop, vertical loop, quad, double extended Zepp, Lazy H, W8JK antennas all give efficient multi-band operation when fed with balanced lines. 6-80 Meter Balanced Line Tuner MFJ-974B. Same as MFJ-974HB but for 6-80 Meter operation (no 160 Meters). Antenna Accessories MFJ-1777, $49.95. 102 feet all band doublet antenna covers 160-6 Meters with balanced line tuner. Super strong custom fiberglass center insulator provides stress relief for 450 Ohm ladder line (100 feet included). Authentic glazed ceramic end insulators. Handles 1500 Watts. MFJ-18H100, $16.95. 100 feet of quality 450 Ohm ladder line. MFJ-18G100, $11.95. 100 feet of extremely strong heavy duty 7-strand, 14gauge hard copper antenna wire. MFJ-16C06, $3.95. 6 authentic glazed ceramic end/center antenna insulators. Extra strong. Will not arc or melt. New! MFJ-16D01, $6.95. Super strong custom fiberglass stress relieving center insulator for 450 Ohm ladder line. See page 55 for more antenna accessories. MFJ Balanced Line Antenna Tuners Superb balance . . . Extremely wide matching range . . . Covers 1.8-54 MHz . . . Cross-Needle SWR Wattmeter . . . Handles 300 Watts . . . Compact size . . . MFJ-974HB $199 95 Ship Code D MFJ-974B $179 95 Ship Code D The MFJ-976 is a 1500Watt full Legal Limit fully balanced antenna tuner. You get superb current balance, very wide matching range (12-2000 Ohms) and continuous 1.8-30 MHz coverage including all WARC bands. Handles full 1500 Watts SSB and CW. You can tune any balanced lines including 600 Ohm open wire line, 450/ 300 Ohm ladder lines, 300/72 Ohm twin lead -shielded or unshielded. Also tunes random wires and coax fed antennas. MFJ's fully balanced extremely wide-range T-network gives you simple, fast three knob tuning. No complicated switching between high and low impedance and switching in additional capacitance of L-networks. Four separate 500 pF in two gangs gives you a total of 2000 pF for highly efficient low loss operation on 160 Meters. You get excellent 10 Meter performance because of MFJ's low minimum capacitance and exclusive Self-Resonance Killer high-Q AirCore TM roller inductor with silver plated contacts. Heavy duty 1:1 current balun gives you superb balance and stays cool even at 1.5kW. True active peak reading lighted Cross- Needle SWR/Wattmeter lets you read SWR, true peak or average forward and reflected power all at a glance on 300/ 3000 Watt ranges. 12Wx6Hx15 3/4D inches. MFJ-976 $499 95 Ship Code E MFJ 1500 Watt Fully Balanced Antenna Tuner An inside view of the MFJ-976 Fully balanced MFJ-976 handles 1500 Watts legal limit . . . Extra-wide 12-2000 Ohms matching range . . . continuous 1.8 to 30 MHz coverage including all WARC bands . . . Four separate 500 pF in two gangs gives you a total of 2000 pF capacitance . . . Heavy duty 1:1 current balun . . . more!

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