CUBE Impedance Transformers (<1:1, 1:1, >1:1)

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)

Palomar Engineers offers a variety of impedance transformers configured as Baluns (balanced coax to unbalanced load) or Ununs (unbalanced coax to unbalanced load) for matching typical 50 ohm feed line impedances to antenna or other load impedances.

We specify impedance ratios as an output to input ratio where the output (or load) is given first and the input is given second (e.g. 100:50 (2:1) would mean a 100 ohm output and a 50 ohm input; a 25:50 (1:2) would mean a 25 ohm load and a 50 ohm input). Most all products use a 50 ohm input unless otherwise specified.

We have products that are available as kits for the do-it-yourself (DIY) person or fully assembled and tested units for the “Plug & Play” crowd.

Note: we use stainless steel eye bolts and studs for all of our balun products. Most balun/unun boxes are 4" x 4" x 2" with some 5KW Hybrids are 4" x4" x 4" size.

977715063 - HF High Power Impedance Transformers

50:50 ohm (1:1) Transformers

1038133486 - HF High Power Impedance Transformers

50:75 ohm (1.5:1) Transformers

1032258084 - HF High Power Impedance Transformers

50:100 ohm (2:1) Transformers

3230920002 - HF High Power Impedance Transformers

50:112 ohm (2.25:1) Transformer

1032258098 - HF High Power Impedance Transformers

50:200 ohm (4:1) Transformers

645692356 - HF High Power Impedance Transformers

50:250 ohm (5:1) Transformers

1032258102 - HF High Power Impedance Transformers

50:300 ohm (6:1) Transformers

2907961033 - HF High Power Impedance Transformers

50:400 ohm (8:1) Transformers

977731658 - HF High Power Impedance Transformers

50:450 ohm (9:1) Transformers

977732147 - HF High Power Impedance Transformers

50:600 ohm (12:1) Transformers

946398170 - HF High Power Impedance Transformers

50:800 ohm (16:1) Transformers

3039487587 - HF High Power Impedance Transformers

25:1-81:1 Baluns/Ununs

3897259167 - HF High Power Impedance Transformers

Multi-Ratio Transformers

2966716034 - HF High Power Impedance Transformers

Hybrid (NN:1 + 1:1) Transformers

1032258110 - HF High Power Impedance Transformers

Off Center Fed Dipole Transformers

1032258119 - HF High Power Impedance Transformers

Ladder Line to coax transformers

645669903 - HF High Power Impedance Transformers

Enclosure Boxes and Hardware

645755215 - HF High Power Impedance Transformers

Balun/Unun DIY Kits

The high power ferrite impedance transformer series (> 1:1), configured with outputs to act as a baluns (unbalanced coax in to balanced load output) or as ununs (unbalanced coax input to unbalanced load output) are designed for demanding radio transmitter stations that run over 1,000 watts PEP or run continuous modes like AM, digital, RTTY, FM, etc. at high power levels. Radio contest operators, commercial shortwave broadcast, and industrial and commercial stations use these transformers for for a variety of balanced and unbalanced antenna loads. Baluns are typically used for balanced loads and antennas like dipoles, loops, log periodics, and direct feed yagi/beams. Ununs are used with verticals, end fed wires, horizontal dipoles, G5RV/ZS6BKW, Zepps, vertical wire beams, etc). All products are in an enclosed NEMA water resistant box with SO-239 input connector and stainless steel side/top studs with wing nuts or side and top eyebolts. The enclosure box has mounting “side feet” for attachment to a post or antenna boom using nylon ties.