VSWR and Antenna Tuners

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NOW LET'S LEARN TO Use the Antenna TUNER Most antenna tuners have an inductance rotary switch and two capacitors. (refer to photo) The capacitors are often labeled ANTENNA and TRANSMITTER. In some antenna tuners the inductance switch is replaced with a continuously variable inductance, known as a roller inductor. SHOCK HAZARD! NEVER TRANSMIT WITH THE TUNER COVER OFF! 34
NOW LET'S LEARN TO Use the Antenna TUNER Place both capacitor controls at their mid-range positions. Don't trust the knob markers if this is your first experience with the tuner! If you are comfortable with the next procedure, remove the cover of the tuner and turn the knobs until the moving capacitor plates are only half meshed with the stationary plates. If the knobs are pointing to half scale with the reference markings on the knobs and front cover you are okay. If not, loosen their Allen screws and rotate the knobs so that they point to mid scale. Re-tighten the knobs, replace the tuner cover and you're ready to go. 35
Page 1 and 2: VSWR and Antenna Tuners RF Mismatch
Page 3 and 4: What is a Transmission line? Equiva
Page 5 and 6: Many Ways To Express An Impedance M
Page 7 and 8: Reflection coefficient Example calc
Page 9 and 10: Return Loss Example Return Loss Ret
Page 11 and 12: Comparison of Methods To Express Mi
Page 13 and 14: The Real World • In order to tran
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Page 17 and 18: Long Feedlines Mask The load VSWR I
Page 19 and 20: It Is Not That Simple • The actua
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Page 23 and 24: Measuring VSWR Directional Couplers
Page 25 and 26: Measuring VSWR • For UHF and Micr
Page 27 and 28: Matching The Transmitter To The Ant
Page 29 and 30: Antenna Tuners In layman's terms, a
Page 31 and 32: What Is Inside An Antenna Tuner? Va
Page 33: What Is Inside A Manual Antenna Tun
Page 37 and 38: Using the Antenna Tuner Tuning Proc
Page 39 and 40: Using the Antenna Tuner 7. After th
Page 41 and 42: What is inside an Automatic Antenna
Page 43 and 44: Properly Connecting An Antenna Tune
Page 45 and 46: Any Questions? Antenna tuner refere

VSWR and Antenna Tuners

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