MFJ-266 HF/VHF/UHF Antenna Analyzer
Instruction Manual
©
2011 MFJ Enterprises, Inc.
5
displays
complex impedance
(Z = R+JX),
impedance magnitude
(Z =
Ω
), and
SWR
for any
load connected to the antenna jack. Note that only SWR is displayed in the UHF operating range.
50+j 0 50 1.0
Stimulus Frequency
Band (Frequency) Selection
SWR (1.0:1)
10.000MHz D SWR
Impedance Magnitude
Complex Impedance
3.5 RF Signal Source
RF output from the MFJ-266’s built-in stimulus generator is available at the
ANT
connector in
Analyzer
mode. This signal is a +2 dBm continuous carrier. When using the analyzer as a signal
source, the operating range, band, and frequency are selected in the normal manner and will be
displayed on the screen (see Frequency Selection, Section-4).
3.6 L/C Measurement Mode
The MFJ-266 may be used to measure the value of unknown capacitors and inductors. To
measure L/C values, connect the device to be tested to the antenna jack and follow the procedure
outlined below:
Measure Capacitance
Turn the analyzer off, then
press and hold the Up button while turning PWR back on.
The
screen will display the value in pF along with the stimulus frequency being used for the
measurement.
Measure Inductance
Turn the analyzer off, then
press and hold the Down button while turning PWR back on
. The
display will show inductance in uH along with the stimulus frequency.
5.000MHz D C=
122 pF
Capacitance
Frequency Band
5.000MHz D L=
10.200 uH
Inductance
Frequency Band
5.000MHz D C=
Xc>1.5k
Frequency Band
Reactance out of Range
Change Stimulus Frequency
