MFJ SWR Analyser

MFJ-226 Portable Antenna Analyzer

MFJ-226 Analyser

Portable Antenna analyser with graphical display, up to 230 MHz.

The MFJ-226 is a battery operated antenna analyser for the frequency range from 1 to 230 MHz. Thanks to it#s design as a vectorial network analyser (VNA) the MFJ-226 is capable to measure complex values and present the results graphically as a Smith chart. Possible measurements are SWR, complex impedance (resistance and signed reactance), phase angle, return loss and much more.

Another important feature of the MFJ-226 analyser is the possibility to calibrate the system. With a measurement of open, short and load (OSL) a better accuracy is achieved. Further existing cable losses and phase shifts can be eliminated from a measurement. Calibration data can be stored for later recall for four different setups.

For measurements the MFJ-226 offers 32 memories. This is very useful when doing measurements on the road, later you can transfer the measuremnt data to a computer. Measurements are done either in the "single frequency mode" on one fixed frequency, or in the "sweep frequency mode" while sweeping between two corner frequencies. This latter mode allows for the measurement and display of SWR graphs over an entire frequency band. Measurements can also be done b computer cntrol over the USB interface.

The MFJ-226 analyser offers a graphical LC display and an easy to operate keyboard, both backlit. A USB port is used to transfer measurement data to the computer as well as for firmware upgrades. Power supply is done by two AA cells. The solid case is suitable for field-use. Size of the MFJ-226 is 165 x 80 x 32mm, the weight incl. batteries is c. 300g.

Technical Data MFJ-226
Frequency Range 1 - 230 MHz, continous
Frequency Resolution 1 Hz
Antenna Connector N type, female
Output Level +10dBm (typ.)
Harmonics -15dBc (typ.)
LC Display Monochrome, 128x64 px, backlit
Weight c. 300 gr (incl. batteries)
Power Supply 2 AA cells, Alkaline or NiMH
Computer Interface USB Mini-B socket
Order No.
MFJ-226 Portable Analyser up to 230MHz 435.00 € Buy now
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MFJ-225 Graphical Antenna Analyser

MFJ-225

The MFJ-225 has got all functions of a standard analyser plus a variety of new functions, such as built-in LC display, 2 port VNA and USB port. The MFJ-225 does not require calibration (self-calibrating)! Very easy to use. All functions are described in the included English manual.

Two antenna analysers in one!
The MFJ-225 is a complete, self-contained analyser that is battery-powered and thus can be installed directly at the antenna. Connect the device to a PC and use the IG-mini VNA freeware to create a fully-fledged 2-channel VNA and do extensive data analysis. You can also print graphical curves in addition to your numerical results.

View more!
Thanks to the built-in, illuminated 3″ graphic display, you will always have all the values in view. In addition to the presentation of discrete values, the SWR can also be plotted graphically as a curve. Other important displayed values are Impedance, V/R ratio, phase angle. Set center-frequencies with a knob on the side of the MFJ-225 and read the curve in full screen mode on the display.

Frequency range from 1.5 to 179.9 Mhz
The MFJ-225 analyser covers the entire frequency range from 1.5MHz to 179.9 MHz continuously with the help of an integrated DDS-VFO with 1 khz resolution, so all mechanical elements like switches or controller are no longer necessary. The adjustment is done by an optical encoder.

Built-in signal generator!
The MFJ-225 uses a built-in signal generator with -5dBm power output to test several components such as mixer, amplifier, filter etc. The signal has a good suppression of harmonics of -50dBc and provides for excellent test results.

Versatile power supply!
For operation of the MFJ-225 you can use 4 AAA (rechargeable or Alkaline) batteries. These are installed inside the device. With a 12V socket attached on the side, you are even able to recharge the batteries. A LED light shows the charging status. A USB cable does also function as a power supply for the MFJ-225 when connected to a PC.

What is the MFJ-225 able to measure?

  • SWR (1:1 to 9.9:1)
  • Complex impedance (R + jX)
  • Return loss (RL, 0 - 30dB)
  • Phase (0 - 180°)
  • Capacity (0 - 9999pF)
  • Inductance (0.1 - 80µH)
  • Cable length (0.5 - 45m)
  • Cable loss (0 - 30dB)

No power supply included!

Order No.
MFJ-225 Graphical antenna analyser 439.00 € Buy now New
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MFJ-259C / MFJ-269C

MFJ-269C MFJ-269C

With the MFJ-259C get your antennas properly tuned for maximum performance. Connect to the feed line, set the bandswitch and tune the dial - just like a transceiver. Read the antenna SWR and complex impedance. By tuning through you see instantly the antenna resonance frequency. Frequency range: MFJ-259C: 1.8 - 170 MHz, MFJ-269C: additionally 415-470 MHz. External 12V supply or internal batteries (10x AA size).

  • RF signal generator 1.8 - 170MHz
  • Frequency counter with 0.1Hz accuracy
  • SWR Analyzer
  • Measure complex antenna impedance
  • Dip meter (with option MFJ-66)
Order No.
MFJ-259C : up to 170 MHz 339.00 € Buy now
MFJ-269C : incl. 70cm-Band 459.00 € Buy now
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Accessories MFJ-259 and MFJ-269

MFJ-BAG Carrying Bag

Accessory Kit for MFJ-259/269C

  • Included in supply
  • Power Supply/Charger
  • 10pc AA (Mignon) Batteries
  • Protective/Carrying case

The allround well padded nylon bag has a removable shoulder strap, still have room for other small items and an additional a flat front compartment for paperwork or cable. Dimensions 27x15x11cm. The batteries are maxE 'Batteries', with almost no self-discharge and then after loading they are more than a year ready for use.
The power supply can be used for loading and also to operate the SWR Analyzer and has 15V output voltage. The standard 12V power supply units are not suitable! To charge the batteries in the SWR Analyzer the batteries can remain inside. Do not forget to change the internal switch of 'dry batteries' to 'battery', see the instructions of the devices.

Order No.
MFJ-259-BAG Carrying Bag with Power Supply and Batteries 69.00 € Buy now
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Other Accessoires for MFJ-259 and MFJ-269 analysers

Order No.
MFJ-29C Protective bag for MFJ-259B 25.00 € Buy now
MFJ-29D Protective bag for MFJ-259C 33.40 € Buy now
MFJ-39C Protective bag for MFJ-269 25.00 € Buy now
MFJ-39D Protective bag for MFJ-269C 33.40 € Buy now
MFJ-66 Dip meter inductivities for MFJ-259 and MFJ-269 39.80 € Buy now
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MFJ-29C MFJ-29C
MFJ-66 MFJ-66

MFJ-266C SWR Analyzer

MFJ-266C MFJ-266C

Compact antenna and HF instrument for shortwave and up to 70cm UHF

The MFJ-266C SWR analyser covers the bands from shortwave, over 4m and FM radio up to 2m VHF and 70cm UHF. The backlit LC display shows frequency, SWR and impedance (real and imaginary parts, absolute magnitude) at the same time. Further the device can measure capacities, inductivities, field strength or frequency, as wel las act as a signal generator. This enables you to perform easily all antenna measurements as well as frequent HF measurements on cables, stubs, filters, baluns etc. Yet the MFJ-266C is easy to operate.

Frequenca ranges
The MFJ-266C covers the following frequency ranges:

  • A: 1.5 – 2.7 MHz
  • B: 2.5 – 4.8 MHz
  • C: 4.6 – 9.6 MHz
  • D: 8.5 – 18.7 MHz
  • E: 17.3 – 39 MHz
  • F: 33.7 – 65 MHz
  • V: 85 – 230 MHz
  • U: 300 – 490 MHz

The frequency adjustment is done very precisely with varicap tuning, adjusted by a 10x vernier drive. The frequency tuning can be locked against accidental change.

SWR Measurement
The SWR measurment covers a range from 1:1 to 9.9:1, impedances from 10 to 500 Ω, displayed are real- and imaginary part (not on UHF!).

Capacity and Inductivity measurement
Unknown components like capacitors and inductances can be easily found out with the MFJ-266C, the result is shown in pF or µH. The measurement is done at HF frequencies, not low AF frequencies as with some cheap LC meters.

Frequency- and Field Strength Measurement
When operating the MFJ-266C as a frequency counter, the device covers frequency of up to 500MHz, the resolution can be selected between 1 kHz and 100Hz. In this mode the relative field strength is also displayed, allowing comparative measurements of antennas, oscillators, transmitters etc.

Signal Generator
The MFJ-266C can be operated as a signal generator. The is usefil for measurements on filters, mixers or low-power driver stages. The output level is approx. 2Vpp.

Size, Weight, Power Supply
The size of the SWR analyser is 95 x 79 x 165 mm (WxDxH), the weight is approx. 800g. The power supply is either done by 4 internal AA batteries or externally with 12 V=. Power consumption approx. 30mA in frequency counter mode, or 140mA in analyser mode. The antenna connector is N female, an adaptor to PL is included. The Grip-Dip coils MFJ-66 (see above) can be used with the MFJ-266C as well.

Order No.
MFJ-266C SWR Analyser HF/VHF/UHF 399.00 € Buy now
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MFJ-207 SWR Analyser

MFJ-207

The MFJ-207 10-160 Meter Antenna SWR Analyzer gives you a direct readout of your antenna's SWR without the need for formulas or indirect readings. The MFJ-207 can also be used to adjust a tuner to match your antenna without the need for transmitting. The frequency coverage for the MFJ-207 is approximately from 1.75 MHz to 30 MHz in five bands. This provides a very smooth reading of SWR at high frequencies. The coverage for each band may slightly vary from the coverage labled on the cover. The bands and coverage are:

  • BAND A: 1.75 - 3.00 MHz
  • BAND B: 3.00 - 5.00 MHz
  • BAND C: 6.50 - 11.70 MHz
  • BAND D: 11.65 - 20.00 MHz
  • BAND E: 18.00 - 30.00 MHz

It has a jack for an external frequency counter. The MFJ-207 uses a 9V battery or external EDC 12V. It measures 19H x 6.5 W x 5.7D cm.

Order No.
MFJ-207 126.50 € Buy now
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