4:1 Balun - Tuner Design 1.5 - 54MHz 5kW - #4125
|Manufacturer: Balun Designs|
Heavy duty 5kw, 4:1 balun utilizing stacked cores to provide a very high power rating across all HF frequencies and constructed using our enhanced design with Teflon tubing over heavy build Thermaleze insulated wire.
If you are building a true windom (not an OCF dipole) or need to replace the 4:1 balun at the center of a windom, this balun is an excellent choice. This winding will pass the RF signal to the vertical radiating coax element. This model should NOT be used for an Off Center Fed dipole. The model 4114ocf should be used if your are building an OCF without the vertical coaxial radiator.
| Core Material
|| Custom mix low permeability ferrite by Fair Rite Products for maximum bandwidth.
Cores are coated and sealed for long term durability.
| Winding Type
|| Stacked cores with single wire pair wound as 4:1 tuner balun.
| Winding Material
|| 1 bifilar winding of 14 gauge Heavy build polyamideimide Allex 240 Winding Wire.
Windings are inserted into Teflon tubes increasing total breakdown to 10,000 volts.
| Power Rating
|| 1 to 35 MHz - 5kW, 7kW intermittent. 35 to 54 MHz - 3kW.
All ratings based on resonant load. High SWR will reduce power handling ability.
|Useable Frequency|| 1 to 54 MHz
| Insertion Loss
|| 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|
| Enclosure Type
|| 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
| Additional Info
|| Very high efficiency (98-99%).
Will not heat up or saturate at like many of the "less expensive" designs.