Description
MFJ-249D SWR Analyzer, .530-230 MHZ, W/O Meters
The MFJ-249D Antenna SWR Analyzer is a powerful tool for any radio enthusiast. Similar to the popular MFJ-259D, this analyzer boasts an LCD module that displays SWR, true impedance magnitude, and frequency readings. It also includes a Nicd/nNimh charging circuit and can use accessories designed for the MFJ-259D. This compact and versatile device is perfect for anyone looking to optimize their antenna system.
Must have Accessory MFJ-1312D 2v 500mA Wall Power Adapter
MFJ 249D 280 kHz - 230 MHz plus 2200 Meter Antenna SWR Analyzers are compact, battery-powered RF impedance analyzers. They combine four basic circuits; a 100-140 kHz and 280 kHz to 230 MHz variable frequency oscillator, a frequency counter, a 50 ohm RF-bridge, and an 8-bit micro-controller. These analyzers make a wide variety of useful antenna or impedance measurements, including coaxial cable loss and distance to an open or short. Although primarily designed for analyzing 50 ohm antenna and transmission line systems, MFJ 259D Analyzers also measure RF impedances between a few ohms and several hundred ohms.
They also function as a signal source and frequency counter! Their frequency range of impedance measurement is done with several overlapping bands. The accuracy of the analyzers is enhanced by the use of special microwave zero-bias Schottky detectors with matching compensating diodes. They are compensated to provide the best possible linearity with both high and low impedance loads, making the A/D converter's 0.5 percent resolution the primary limitation.
Features
MFJ-249D SWR Analyzer, .530-230 MHZ, W/O Meters
The MFJ 249D SWR Analyzer is a small and portable device that can measure the quality of antennas and other radio equipment. It works by sending out radio waves and measuring how well they are received. The analyzer can tell you if there are any problems with your equipment, like a broken cable or too much interference. It can also tell you how far away an open or short circuit is. You can use it to measure both high and low impedance loads. The analyzer is accurate and easy to use, and can help you get the best performance out of your radio equipment.
Specifications
MFJ-249D Digital Antenna Analyzer
MFJ-249D is like MFJ-259D, but less analog meters.
Reads SWR, true impedance magnitude and frequency on LCD module.
Has Nicd/nNimh charging circuit, can use MFJ-259D accessories.
MFJ-1312D 2v 500mA Wall Power Adapter