Home Antenna Accessories Antenna Accessories Tuning & Matching Units (ATU's) MFJ-974B - Balanced Line Tuner - 300 W 6-80M
Category:
Tuning & Matching Units (ATU's)
Manufacturer:
MFJ

MFJ-974B - Balanced Line Tuner - 300 W 6-80M

SKU :
53-449
Category:
Tuning & Matching Units (ATU's)
Manufacturer:
MFJ

MFJ-974B - Balanced Line Tuner - 300 W 6-80M

SKU :
53-449

MFJ-974B - Balanced Line Tuner - 300 W 6-80M

In stock
Out of stock
SKU
53-449
£389.95
About MFJ-974B - Balanced Line Tuner - 300 W 6-80M

The MFJ-974B is a fully balanced true balanced line antenna tuner.

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-974B is its successor. It meets todays needs and even surpasses the Johnson Matchbox outstanding performance.

The MFJ-974B gives you excellent current balance, very wide matching range(12-2000 Ohms) and covers 10-80M continuously including all WARC bands. 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.

The MFJ-974B tunes any balanced lines including 600 Ohm open wire line, 450/300 Ohm ladder lines, 300/72 Ohm twin lead - - shielded or unshielded.

The MFJ-974B 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 inductor for 6 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.

Keatures/Specifications:

  • 10-80M
  • Handles 300W PEP, 150W CW
  • Fully balanced 'T' match network
  • 1:1 current balun
  • Cross needle SWR/Wattmeter 30/300W ranges
  • Matches 600 Ohm open wire, 450, 300 Ohm ladder lines, 300/72 Ohm twin, coax & random wires
  • High-Q air wound tapped inductor
  • 4 gear 1000V air variable capacitors
  • 3 tuning controls
  • 12V DC illuminated meter
  • Size 190 x 152 x 203mm approx. 

DELIVERY

We aim to dispatch all parcels within 24hrs. We are normally able to dispatch parcels SAME DAY where orders are received before 2.00pm Monday to Friday.

 

Whilst we try our best to ship same day, we cannot guarantee delivery time. You will however receive tracking details as soon as your order has been processed.

 

Please note that we do not process orders over the weekend, so orders placed after 2pm on Friday will not ship until Monday.

 

Please allow an extra processing day for international orders to enable us to complete export/import custom clearance declarations.

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