These loop tuners can be used indoors or out outdoors for portable use

Key Features

• Powerless -no power supply required
• Maximum Input Power - 150 Watts ( all modes)
• Easy Carry Handle - Permits easy handling to/from portable locations
• Low Radiation Angle: Rivals full size dipoles.
• Quiet Reception: Extremely quiet receiving antenna. Hi-Q rejects out-ofband interference, reduces overloading, and rejects harmonics.

Additional Information:

Drape a wire around a bookcase and attach both ends to this new MFJ-933C Small High Efficiency Loop Tuner, Jr. It instantly turns into a small, high efficiency multi-band transmitting loop antenna!

You can operate 5.3 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 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.

Its perfect for apartments, hotel/motel rooms, antenna restricted, and portable locations - it really gets out!

The MFJ-933 Small High Efficiency Loop Tuner, Jr. 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.