MFJ MFJ-936C - Features; Controls & Connections

MFJ-936C Deluxe High-Efficiency Magnetic Loop Tuner Instruction & Technical Manual
the loop if wind becomes a factor in the operating environment.
2.2 FEATURES
• Powerless: No power supply required.
• Maximum Input Power: 150 Watts (all modes)
• Easy-to-Read Loop RF Current Indicator: 0-100 unitless scale with adjustable
sensitivity
• Easy-Carry Handle: Permits easy handling to/from portable location(s)
• Small Physical Profile: 9.25” wide, 7.5” deep, by 4.25” tall
• Low Radiation Angle: Rivals full size dipoles.
• Quiet Reception: Extremely quiet receiving antenna. High-Q design rejects out-of-band
interference and harmonics and reduces overloading.
• Indoor Use: Perfect for apartments, hotel rooms, antenna restricted and portable locations.
2.3 CONTROLS & CONNECTIONS
The MFJ-936C Deluxe High-Efficiency Magnetic Loop Tuner™ front panel controls and indicators
(Figure 4) function to permit matching the wire or coax loop to the coaxial line at the input of the
tuner.
Figure 4: Front-panel Controls: 1.) Tuning Control, 2.) Matching
Control, 3.) Power Range, 4.) Meter Sensitivity, 5.) SWR Meter, 6.)
Antenna Current Meter, 7.) Coax Output, 8.) PVC Mount
1. TUNING: This adjusts the Butterfly capacitor.
2. MATCHING: This matches the tuned loop to a 50Ω coaxial cable.
3. POWER RANGE: Push-button selectable between 30W and 300W ranges.
4. METER SENSITIVITY: This adjusts the sensitivity of the current meter.
5. SWR METER: Measures forward and reflected power and determines the SWR.
6. ANTENNA CURRENT METER: This displays the current passing through the antenna on
a unitless 0-100 scale.
-7-