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Model 9135 - 9:1 Unun 1.5 - 54MHz - 5kW
This design is excellent for matching both long and short length unbalanced wire antennas for multiband use. Allows the internal tuner of most rigs to tune remotely mounted single wire antennas. This unit utilizes stacked cores for increased power handling and added inductance for the lower frequencies. Be sure to review the various lengths in the attached document to obtain the lowest SWR across most if not all HF bands.
CautionUnuns are intended for use with unbalanced antennas such as verticals and long wires. They will not work with balanced designs such as dipoles or loops and use with a balanced antenna may cause erratic operation and/or damage to the unit.
Custom mix low permeability ferrite by Fair Rite Products for maximum bandwidth.Cores are coated and sealed for long term durability.
Stacked cores wound with single trifilar winding configured as 9:1 unun.
14 gauge Superior Essex Heavy build polyamideimide Allex 240 Winding Wire. Windings are inserted into Teflon tubes increasing total breakdown to 10,000 volts.
1 to 35 MHz - 5kW, 35-54 MHz - 4kW
1 to 54 MHz
Less than .02db
SO-239 connectors are silver plated with Teflon insulation. Studs and eyebolts are 1/4 inch. Alternate connectors and Mounting Options are available in the Accessories section.
All Stainless Steel
NEMA rated 4x marine grade junction box for outdoor installations. Cover utilizes integral neoprene gasket for weatherproof integrity.
4x4x2 inches for main body of unit
Very high efficiency (98-99%).
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