Page 9 of MFJ 2006 Catalog by MFJ Enterprises, Inc.

MFJ . . . The World Leader in Ham Radio Accessories! 9 Drape a wire around a bookcase or window and attach both ends to this new MFJ Small Loop Tuner TM. It instantly turns into a small, high efficiency multi-band transmitting loop antenna! You can operate 5.3 to 30 MHz with a full 150 Watts. No ground, radials or counterpoises needed. The excellent performance of a highefficiency small loop antenna is legendary and well proven by users all over the world. Youll radiate a low angle DX signal that literally rivals full size dipoles and work incredible DX! Its a very quiet receiving antenna -youll hardly notice static crashes. Its high- Q reduces QRM, overloading, harmonics. Its perfect for apartments, antenna restricted areas and portable operation it really gets out! A 13 foot wire formed into a loop operates 30-20 Meters (4 foot for 17-10 M; 7 foot for 20-15 M; 28 foot for 60-40 M). 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 given wire length covers about 1.5 to 1 frequency range (i.e. 7-10/18-28 MHz, etc.). Exact frequency coverage depends on wire length, loop shape, surroundings and height above ground. Has MFJ low loss Butterfly loop tuning capacitor, no rotating contacts. Easy-Carry handle. Mount for PVC Cross on cover. See June, 1986, QST or recent ARRL Antenna Handbook for more details on small, high efficiency loops. MFJ-936B, $249.95. For home/portable stations. Has relative RF antenna current meter with sensitivity control and 30/300 Watts Cross-Needle SWR/Wattmeter. 10 1/4Wx5 1/4Hx9 1/2D inches. MFJ-935B, $199.95. For portable/home stations. Smaller, lighter. Relative RF current meter with sensitivity control. 6 1/4Wx5 1/4Hx9 1/2D inches. MFJ-933, $179.95. Same as MFJ-935B less RF current meter. 6 Wx5 Hx9 D in. MFJ-57B, $29.95. Has PVC Cross for mounting loop on cover, 20- 15M insulated 10-gauge flexible loop, low resistance lugs. MFJ-58B, $49.95. Has MFJ-57B above, plus 60- 40 M, 20-15 M, 17-10 M loops; wire clips. MFJ Small, high efficiency Loop TunersTM Turns any wire loop into small, high efficiency multi-band transmitting loop antenna Tiny 50-Watt version of MFJ-933, Small High- Efficiency Loop Tuner TM. Makes portable operation really portable and fun! Ultra low loss butterfly capacitor. Covers 80-10 Meters with appropriate wire loop. Tiny 3Wx4Hx1 D inches. MFJ-932 $99 95 Ship Code A Mini high-efficiency Loop Tuner TM MFJ AutoLoopTuner TM automatically tunes small loops Automatically tunes small loops . . . Place on desk, in closet, attic, balcony, outside . . . Learns your favorite frequencies for instant re-tunes . . . Memories for 4 loops . . . Covers 80-10 Meters . . . Handles 300 Watts . . . Quiet receiving antenna reduces QRM C The heart of the MFJ Loop Tuners is an extremely low loss butterfly tuning capacitor with no rotating contacts. 4200 Volts RMS. 1/4 dia.x2 1/2 long shaft. A. MFJ-19, $69.95. 12 to 67 pF. 6Dx3Wx3 H in. B. MFJ-23, $89.95. 18 to 136 pF. 10Dx3Wx3 H in. Butterfly loop Tuning Capacitors Wire Loops and Mounts The MFJ-937 AutoLoopTuner TM uses fast servomotors to drive the same Butterfly and matching capacitors as in the MFJ-936B to give you ultra high efficiency. You get even better performance because the MFJ-937 automatically tunes your small loops more accurately, faster and more skillfully than any human ever could! Its perfect for indoor and outdoor operation when you need a small, highly efficient HF antenna. Place it on your desk or out-of-the-way in your closet, attic, balcony or even outside in a weather-protected container. All power and control signals travel down your coax no extra cables needed. Just transmit briefly. When the SWR goes low, youre ready to ragchew or snag your next DX. Its so smooth and transparent you wont even know its there. As you operate, your AutoLoopTuner TM is quietly learning your favorite frequencies and their tuner settings. The next time youre on that frequency and loop, these tuner settings are instantly restored and youre ready to go! The MFJ-937 is smart enough to learn over 2000 frequencies in each of four loops. So when you are ready to enjoy those bands, just attach the appropriate loop, tune to your frequency, transmit and your loop instantly tunes from memory. Youll radiate a solid, low angle DX signal that rivals much bigger full-size dipoles. Its also a very quiet receiving antenna and has a very narrow bandwidth that reduces QRM and receiver overloading. The MFJ-937 covers 80-10 Meters using appropriate loops and easily handles 300 Watts. You can tune any shape loop. Each loop covers about a 1 to 1.5 frequency range depending on the shape, surroundings and other factors. For example, a 13 foot wire formed into a loop operates 30-20 Meters, a 4 foot wire 17-10M, 7 foot wire 20-15M and a 28 foot wire 60-40M. The cover has a mount for the MFJ-57B/ MFJ-58B PVC Cross loop antenna assembly. This gives you a complete self-contained 30-10 Meter desktop antenna. For 80, 60, 40 Meters, you can hang a larger loop. Easy-Carry handle. Requires 12 VDC, MFJ-1312D, $14.95 or BiasTee, (MFJ-4116, $29.95) and 12 VDC for remote operation. MFJ-57B, $29.95. Has PVC Cross for mounting loop on cover, 20-15M insulated 10-gauge flexible loop, low resistance lugs and wire clips for attaching loop wires. MFJ-58B, $49.95. Has MFJ-57B above, plus 60-40 Meters, 20-15 M, 17-10 M loops. MFJ-937 $329 95 Ship Code C MFJ-933 $179 95 Ship Code B MFJ-935B $199 95 Ship Code B Mount for PVC Cross Loop MFJ-936B $249 95 Ship Code C Mount for PVC Cross Loop B. A. New!

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