MFJ 225 ANTENNA ANALYZER
Description
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The MFJ-225 HF/VHF RF-Analyzer delivers all the popular measurement functions you've come to expect, plus it takes RF testing to a new level. Advanced features include full-screen LCD graphics, two-port VNA measurements, precise DDS frequency control, and direct PC interface running powerful IG-miniVNA freeware. These features are advanced, but actually less complicated to use because they reduce the number of steps needed to capture and view a wide range of data. Before powering up your MFJ-225 for the first time, please read the manual, paying special attention to Section-2.0, Powering Your Analyzer. It contains essential information for installing batteries and supplying power correctly. In fact, the more you know about the MFJ-225 ahead of time, the sooner you'll be able to utilize all of its functions and features. Note that a "Quick Guide" reference is available in Section-9 to recap and help you review the essentials for operating your unit.
Two Analyzers in One
Out in the field, MFJ-225 is a compact completely self-contained handheld analyzer. On the bench it becomes a full-fledged two-port (S21) desktop machine when teamed up with your PC. Using powerful IG-miniVNA freeware, you`ll run detailed data analysis and then print out stunning color-graphic plots to document your work!
Continuous HF-VHF Coverage
Tunes from 1.5 MHz to 179.9 MHz with rock-solid stability and no gaps. That`s because the MFJ-225`s VFO is a state of the art programmable DDS (direct digitalsynthesis) generator with pin-point 1-kHz frequency resolution. DDS control means no mechanical band switches or tuning elements, just a reliable velvet-smooth optical encoder to glide across the spectrum.
Powerful Clean Signal Source
The MFJ-225 DDS stimulus generator also gives you a leveled -5 dBm signal source for driving mixers, low-power amplifiers, filters, networks, diplexers, and antennas on the test range. And, your test signal is always clean, with over -50 dBc of harmonic and spur suppression. That`s better than many precision lab generators costing thousands of dollars! Connect an external step attenuator, and it becomes a highquality signal generator for peaking sensitive receivers and preamplifiers.
Specification
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Tunes : 1.5 MHz to 179.9 MHz
In The Box
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- DC Power male to open end cable
- Unit
- Instruction manual

