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Owner'S Manual

MFJ VERSA TUNER II MFJ-941D, Owner'S Manual

The MFJ VERSA TUNER II MFJ-941D is a versatile antenna tuner designed to enhance your amateur radio experience. Ensure optimal performance by referring to its comprehensive Owner's Manual, available for free download from our website. Unlock the tuner's full potential with this user-friendly manual.

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Summary of Contents for VERSA TUNER II MFJ-941D

Page 1: ...w SteamPoweredRadio Com MFJ VERSA TUNER II M1 OD1 EL MFJ 941 D OWNER 1 S MANUAL I CAUTION Read All Instructions Before Operating Equipment MFJ ENTERPRISES INC P 0 BOX 494 MISSISSIP1 PI STATE MS 3978 2 USA ...

Page 2: ...and the S0 239 coax connector marked TRANSMITTER on the tuner 2 One or two coax fed antennas may be connected to the S0 239 coax connectors marked COAX 1 and COAX 2 NOTE Coax 1 and coax 2 antennas can be connected directly to the transmitter by turning the antenna selector to COAX 1 DIRECT or COAX 2 DIRECT 3 A random wire antenna may be connected to the five way binding post marked WIRE The random...

Page 3: ...sents a minimum of inductace at position A and a maximum of inductance at position L Less inductance is needed at high frequencies for the same impedance The TRANSMITTER and ANTENNA controls both present a maximum of capacitance at position 1 For optimum operation of the MFJ 941D the transmitter must be tuned for a 5J ohm output impedance for the frequency band in operation The transmitter can be ...

Page 4: ...t a low transmitting power 9 After a minimum SWR is achieved readjust the SWR sensitivity to get a more accurate reading of the SWR by pushing the FWD REF switch in to FWD and adjust the SWR SENSITIVITY control for a full scale meter deflection Switch the FWD REF switch to the REF position for the SWR reading The transmitted power may now be s witched to 3JJ watts The SWR sensitivity must be re et...

Page 5: ...g 3 For recalibrating the power scale settings use the trim pots just behind the meter Loo king f rom the f ront the left trimpot adjusts the 300 wat t sca le and the right adjusts the 30 watt scale r I I LI_ 1 x _MIT f _ TRANSMITTER TOROID 1 BYPASS COAX 208 pP 208 pF Slb 8 2K JOO 100K I OluF 500 K RL S2 INDUCTIVE MATCHING OluF OluF I MPJ 9410 SCHEMATIC DIAGRAM PAGE 4 WIRE I JUMPER I t 1 1GROUND u...

Page 6: ...onal check cashier s check or money order must be provided to cover postage and handling 4 This warranty is NOT void for owners who attempt to repair defective units Techni cal consultation is available by calling 601 323 5869 5 This warranty does not apply to kits sold or manufactured by MFJ Enterprises Inc 6 Wired and tested PC board products are covered by this warranty provided only the wired ...

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