Get all the basic RF-diagnostic functions you need and more with MFJ’s new
easy-to-use MFJ-266B digital analyzer!
The MFJ-266B covers HF, VHF, plus UHF amateur and commercial frequencies with
It also displays SWR, Complex Impedance, and Impedance
magnitude simultaneously -- all on the same easy-to-read LCD screen.
Use it to
measure Capacitance, Inductance, Field Strength, Frequency, plus generate test
You can also fine tune stubs, analyze coax, test baluns and RF
transformers, and perform many other important RF-related tasks around the shack
or on the road!
When it comes to simplicity and convenience, MFJ-266B is a clear winner. Not
only is it easy-to-use, but fits comfortably in one hand for on-the-fly
measurements on the bench or in the field. Here's the rundown of what this
compact powerhouse can deliver:
MFJ-266B covers all bases -- from 160 Meters through 6 Meters, the FM
broadcast band, Airband, 2 Meters, 70 cm, plus VHF/UHF commercial 2-way
Band A: 1.5 to 2.7 MHz
Band B: 2.5 to 4.8 MHz
Band C: 4.6 to 9.6 MHz
Band D: 8.5 to 18.7 MHz
Band E: 17.3 to 39 MHz
Band F: 33.7 to 65 MHz
Band V: 85 to 185 MHz
Band U: 300-490 MHz
The velvet-smooth 10:1 vernier drive and solid state varicap makes fine tuning a
breeze, and a built-in dial lock prevents accidental detuning while making
measurements. Switched backlighting makes LCD screen easy-to-read in any light.
SWR, Impedance Magnitude, and Complex Impedance
In SWR Mode, the MFJ-266B reads SWR 1:1 to 9.9:1, Impedance Magnitude 10-500 Ohms and Complex Impedance (resistance and reactance). Best of all, it displays
all three parameters simultaneously and operating frequency with one quick
glance. No other low-cost handheld analyzer offers this! (Note: Z-mag and R+jX
not displayed on UHF).
Capacitance and Inductance
Find values for unknown capacitance in pF or unknown inductance in uH quickly.
Measurements are made at RF frequencies rather than at the low audio frequencies
used by many handheld L/C meters.
Frequency Measurement, Field Strength Readings
In Frequency-Counter Mode, MFJ-266B becomes an accurate 500-MHz counter with
a choice of 1-kHz or 100-Hz resolution. The counter mode also features a
high-resolution digital field-strength meter for measuring the relative
intensity of incoming signals. Together, these functions are extremely useful
for checking the operation of oscillators, transmitters, as well as assessing
of radiated signals from antenna arrays.
Built-in Interference Detection
In Frequency-Counter Mode, the MFJ-266B also tracks down powerful local signals
that can disrupt accurate SWR measurements. When picked up by an antenna under
test, these signals may compete with the analyzer's internally generated test
signal to make SWR readings appear artificially high. All handheld antenna
bridges are subject to additive interference, but only the MFJ-266B can detect
the presence of an offending signal, display its severity, and identify the
Powerful Signal Source
The MFJ-266B also functions as a tunable signal source, supplying about 2 Volts
peak-to-peak across the entire tuning range. You can use this signal to drive
mixers, low-power amplifier stages, or filters, and use it as a source for
checking antenna patterns on a range. Add a step attenuator, (MFJ-762) and it
becomes a low-level signal source for testing receivers and pre-amps.
Take it With You!
You'll especially appreciate the compact size and bantam weight of the MFJ-266B
when up on a roof or perched on a tower. Also, push-button band switching lets
you toggle across the spectrum with ease when tucked into cramped spaces.
MFJ-266B is ergonomic, with the antenna N-connector positioned on top of the case
and everything else carefully arranged and clearly marked on the front panel --
right in front of your eyes.
MFJ-266B’s operating manual was professionally written and illustrated to help
you understand and master every function quickly. It also includes a guide for
ensuring accurate results and getting the most from the unit's advanced
features. In the back, you'll find a one-page "Quick Guide" that reviews all
controls and functions.
Many Instruments in One
Having the MFJ-266B is like owning several pieces of test equipment. You get a
powerful wide-range signal source, Inductance/Capacitance meter, network
analyzer, RF field-strength meter and a 500-MHz frequency counter all-in-one
small package. The more you use it, the more uses you'll find for it!
Bullet Proof Construction
Features like the rugged aluminum case, solid-state band switching, robust
internal construction, and solid-state LCD display ensure that minor bumps and
drops won't faze your unit in the least. In fact, you can expect it to hold
calibration and deliver reliable service for years to come.
MFJ-266B can be powered from eight internal AA alkaline batteries or from
optional 12VDC/110 VAC adapter, MFJ-1312D. With the long storage life of
alkaline batteries, your analyzer will always be ready to go when you are.
Compact 3 3/4W x 6 1/2H x 2 3/4D inches.
Weighs 1.32 lbs. Draws 30-mA in counter mode and 140-mA in analyzer mode.
Includes N-to-SO-239 adapter.
MFJ Analyzer Accessories
MFJ-66 Plug these MFJ dip meter coupling coils into an MFJ SWR Analyzer and turn
it into a sensitive and accurate band switched dip meter. Two coils cover HF/VHF.
MFJ-5510 12VDC Cigarette lighter adapter cord for using your MFJ SWR Analyzers
on-the-road. 18 inches retracted curly cord, 60 in. fully stretched.