|
|
|
|
 |
4:1 Unun for Monopoles, Wire Verticals & Long Wires - 5kw - #4134
|
Manufacturer:
Balun Designs | | SKU: |
4134
|
Price: $78.95
|
Heavy duty 4kw, 4:1 unun designed for use with wire verticals, long wires and monopole verticals. Utilizes stacked cores to deliver efficient broadband performance and high power rating across all HF frequencies. Works well with both internal and external antenna tuners.
Although many customers report very good performance using just a single ground rod, the best performance will come from using at least 4 ground or elevated radials. In a temporary or emergency situation, a single counterpoise can be used when cut to 1/4 wavelength of the lowest operating frequency.
Note: Because of the smaller diameter of a wire vertical, performance will be slightly less than that of larger diameter aluminum or copper tube/pipe.
Design Features:
- Utilizes a design enhanced by Jerry Sevick, W2FMI, the authority on baluns and ununs. This is his 4:1 unun which he created to handle high power.
- By utilizing toroids with low permeability in a stacked configuration, the low frequencies are provided the necessary inductive reactance.
- Windings are Thermaleze wire inserted in teflon tubes providing a breakdown voltage of 10,000 volts.
- Typical insertion loss is less than 0.2 dB
- Power handling of 5kw from 1.5 to 54MHz.
- All Hardware is stainless steel. Studs are 1/4"
SO-239 connectors are silver plated with teflon insulation.
- N connectors and additional mounting options are available in the Accessories section.
- Much more effective than types with ferrite beads, ferrite bars or small toroids.
Very high efficiency (98-99%). - Unun is installed in weatherproof 4" X 4" X 2" NEMA Box which makes an excellent outdoor weatherproof enclosure.
E-mail a friend about this item.
Return to Catalog
|
Sign In
