MFJ-936B Loop Tuner


Equipment Details

Excellent Condition


Shipping £12 UK Mainland

High Efficiency, Multi-Band

Transmitting Magnetic

Loop Tuner


he MFJ-936B Deluxe High Efficiency Loop Tuner also has a detachable mount for a PVC Cross. Available separately, the MFJ-57B or MFJ-58B PVC Cross Loop Antenna Kits can be used to make a compact self-contained antenna system requiring no ground, radials, or counterpoises,Drape a wire around a bookcase and attach both ends to thisMFJ-936B Deluxe Small High Efficiency Loop Tuner. It instantly turns into a small, high efficiency multi-band transmitting loop antenna!

You can operate 3.5 to 29.7 MHz with a full 150 Watts. No ground, radials or counterpoises needed. A 13-ft wire formed into a loop operates 30-20 Meters (4-ft for 17-10M; 7-ft for 20-15M; 28-ft for 40-60M).You can tune any shape loop — circle, square, rectangle, any odd shape. A quarter wavelength wire shaped as a circle is the most efficient.A fixed wire length covers about 1.5 to 1 frequency range (i.e. 28-18 or 10-7 MHz, etc.). Exact frequency coverage depends on wire length, loop shape and environment.

The excellent performance of a high efficiency small loop antenna is well known and well proven by users all over the world.You’ll radiate a low angle DX signal that literally rivals full size dipoles — work incredible DX! It is also a very quiet receiving antenna. It responds to magnetic fields and not electric fields so you’ll hardly notice static crashes during a storm. Its high-Q rejects out-of-band interference, reduces overloading, harmonics.

It’s perfect for apartments, hotel/motel rooms, antenna restricted, and portable locations — it really gets out,You can take it with you and have it up and operating in minutes from nearly anywhere – on trips, vacations, DX-peditons, camping, even from a motor home. All you need is a transmitter/transceiver and a wire loop to be operating in no time. An Easy-Carry handle permits easy handling to and from portable locations. The unit measures 10 ¼” W x 9 ½” D x 5 ¼” H.Features include a built-in SWR/Wattmeter with push-button power range switch that allows full-scale readings of 30 or 300 Watts forward power and 6 or 60 Watts reflected power. Cross-needle gives SWR so you can tune for minimum SWR every time.

Also, included is a relative RF Antenna Current Meter with 0 to 100 scale with adjustable sensitivity to make tuning for maximum radiated power fast and easy.

Turn wire or coax into a small, high-efficiency multi-band transmitting magnetic loop antenna!  Work the world from 3.5 to 30 MHz using a full 150 Watts on sideband, CW, and digital.

No ground, radials, or counterpoise needed.  A new 313 pF matching capacitor increases the matching range, and a high-efficiency butterfly capacitor has no lossy rotating contacts. Small magnetic loops are very quiet on receive.  You’ll hardly notice static crashes.  The high-Q design reduces QRM, overloading, and harmonics.

It’s perfect for apartments, antenna-restricted areas, and portable operations.

Loops can be as small as 4′ for 17m-10m, 7′ for 20m-15m, 28′ for 60m-40m, and 50′ for 80m.  Loops don’t have to be pretty.  Any shape will work!  Includes and Easy-Carry handle, a mount for a PCV loop support, and a tripod/mast mount.


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