microprocessor noise on feedlines and power leads. Isolate cables picking up RFI ... when youve suppressed the problem. Easy-to-use. Clamp current transformer over ... suspected cable or wire (up to 1/4 in. dia.) to detect RFI causing ... common-mode currents. 2 1/4Wx4 3/4H x1D inches fits in shirt pocket. Use ... 9 Volt battery. Usable VLF to VHF. Gain adjustable over 50 dB range. ... quickly snaps over wires and cables to measure RF currents flowing in antenna ... antenna feedpoint impedance, radiated power, power losses and efficiency. Track down ... cables. Has five calibrated ranges to 3 Amperes including sensitive 30 mA range ... with linearity compensation to assure accuracy at low currents. It's ... sensitive enough to use an MFJ SWR Analyzer as the source ... to drive your antennas. Less than 1 mA on ...
.com Read SWR of any antenna from 270 to 480 MHz. Just plug in your antenna ... , set the frequency and read SWR! Easy-to-read LCD displays frequency and SWR and has ... tuning. Two line high-contrast LCD has 32 huge 1/4 inch characters. Select any ... for tuning. Examples: Tune from 280 to 295 MHz, 320 to 350 MHz or 400 to 450 ... MHz. Tuning knob has a built-in 10:1 ... tuning. You can use the MFJ-229 to adjust dipoles, verticals, yagis, quads ... and test RF matching networks and RF amplifiers without applying power. Use as signal ... for testing and alignment. Measures 3 3/4Wx6 1/2Hx1 3/4D . HF/VHF/UHF SWR ... . Use it as a traditional dip meter to find a coils resonant frequency. Couple ... it to an antenna, or to coax lines to get their electrical length. Or use it ...