1. Antenna Analyzers

2. Manual ON line http://www. mfjenterprises. com/support. php

3. Product Description
MFJ-269 & MFJ-269PRO Mini-manual. Size, 4.5 x 8 inches. Eight high-quality laminated pages. Single guide covers both analyzers. Complete short form operating instructions in a compact reference guide. Ideal as a ready reference and memory jogger for making SWR, impedance, inductance, capacitance, frequency and other measurement.

4. Power supply
READ THIS SECTION BEFORE CONNECTING THIS DEVICE TO ANY POWER SOURCE.
IMPROPER CONNECTIONS OR INCORRECT VOLTAGES MAY CAUSE DAMAGE TO THIS
PRODUCT!
WARNING: READ SECTION 2.2 THROUGH 2.4 (BATTERY INSTALLATION INSTRUCTIONS)
BEFORE INSTALLING BATTERIES.

5. MFJ 269
The MFJ-269C is a compact battery powered RF impedance analyzer. It combines seven basic circuits; a variable oscillator, amplifier, RF Bridge, agc, buffer, microprocessor and display to perform a wide variety measurements.
MFJ-269 – June 2000
MFJ-269CM - $349

6. useful measurements coaxial cable loss Coaxial Cable Lengths
distance to an open or short, electrical or phsical
impedance
non-precision signal source and frequency counter

7. Versatile not just an antenna analyzer
Antennas: SWR, impedance, reactance, resistance, resonant frequency, and bandwidth
Antenna tuners: SWR, bandwidth, frequency
Amplifiers: Input and output matching networks, chokes, suppressors, traps, and components
Coaxial transmission lines: SWR, length, velocity factor, approximate Q and loss, resonant frequency, and impedance
Filters: SWR, attenuation, and frequency range

8. Other uses
Matching or tuning stubs: SWR, approximate Q, resonant frequency, bandwidth, impedance
Traps: Resonant frequency and approximate Q
Tuned Circuits: Resonant frequency and approximate Q
Small capacitors: Value and self-resonant frequency
RF chokes and inductors: Self-resonant frequency, series resonance, and value
Transmitters and oscillators: ….....Frequency

9. Broad-band Voltage Detectors and External Interference:
Laboratory grade network analyzers use expensive high-selectivity gain- stabilized receivers to avoid off-frequency interference and ensure measurement accuracy.
Building these sophisticated detectors into the MFJ-269C (or any small handheld unit) would drive the price far beyond the reach of most hobbyists.
As an alternative, we use broadband detectors that provide accurate measurements at a much lower cost. The only drawback is that broadband detectors can be sensitive to powerful out-of-band signals.

10. Measuring Impedance of a Dipole

12. Transmission line loss

13. LMR-240 Specifications Look your specific cable up for best results

14. Coax Loss Measurement

15. Distance to Fault / Line Length
Distance to Fault (DTF) (for HF/VHF only) With Vf entered in the previous function, the next function in the display menu is:
Distance to Fault in Feet measures any line type (or impedance), including the length of a Beverage or other antenna (any terminations must be removed).

16. Antenna Measurements
Dual Band J-Pole
HF Dipole
Hand Held Whips