HF Impedance Transformer Kits

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

Store / 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.

977715063 - HF Impedance Transformer Kits
977715063 - HF Impedance Transformer Kits
50:50 ohm (1:1) Transformers
50:50 ohm (1:1) Transformers
1038133486 - HF Impedance Transformer Kits
1038133486 - HF Impedance Transformer Kits
50:75 ohm (1.5:1) Transformers
50:75 ohm (1.5:1) Transformers
1032258084 - HF Impedance Transformer Kits
1032258084 - HF Impedance Transformer Kits
50:100 ohm (2:1) Transformers
50:100 ohm (2:1) Transformers
3230920002 - HF Impedance Transformer Kits
3230920002 - HF Impedance Transformer Kits
50:112 ohm (2.25:1) Transformer
50:112 ohm (2.25:1) Transformer
1032258098 - HF Impedance Transformer Kits
1032258098 - HF Impedance Transformer Kits
50:200 ohm (4:1) Transformers
50:200 ohm (4:1) Transformers
645692356 - HF Impedance Transformer Kits
645692356 - HF Impedance Transformer Kits
50:250 ohm (5:1) Transformers
50:250 ohm (5:1) Transformers
1032258102 - HF Impedance Transformer Kits
1032258102 - HF Impedance Transformer Kits
50:300 ohm (6:1) Transformers
50:300 ohm (6:1) Transformers
2907961033 - HF Impedance Transformer Kits
2907961033 - HF Impedance Transformer Kits
50:400 ohm (8:1) Transformers
50:400 ohm (8:1) Transformers
977731658 - HF Impedance Transformer Kits
977731658 - HF Impedance Transformer Kits
50:450 ohm (9:1) Transformers
50:450 ohm (9:1) Transformers
977732147 - HF Impedance Transformer Kits
977732147 - HF Impedance Transformer Kits
50:600 ohm (12:1) Transformers
50:600 ohm (12:1) Transformers
946398170 - HF Impedance Transformer Kits
946398170 - HF Impedance Transformer Kits
50:800 ohm (16:1) Transformers
50:800 ohm (16:1) Transformers
3039487587 - HF Impedance Transformer Kits
3039487587 - HF Impedance Transformer Kits
25:1-81:1 Baluns/Ununs
25:1-81:1 Baluns/Ununs
3897259167 - HF Impedance Transformer Kits
3897259167 - HF Impedance Transformer Kits
Multi-Ratio Transformers
Multi-Ratio Transformers
2966716034 - HF Impedance Transformer Kits
2966716034 - HF Impedance Transformer Kits
Hybrid (NN:1 + 1:1) Transformers
Hybrid (NN:1 + 1:1) Transformers
1032258110 - HF Impedance Transformer Kits
1032258110 - HF Impedance Transformer Kits
Off Center Fed Dipole Transformers
Off Center Fed Dipole Transformers
1032258119 - HF Impedance Transformer Kits
1032258119 - HF Impedance Transformer Kits
Ladder Line to coax transformers
Ladder Line to coax transformers
645669903 - HF Impedance Transformer Kits
645669903 - HF Impedance Transformer Kits
Enclosure Boxes and Hardware
Enclosure Boxes and Hardware
645755215 - HF Impedance Transformer Kits
645755215 - HF Impedance Transformer Kits
Balun/Unun DIY Kits
Balun/Unun DIY Kits
Display prices in: USD
These impedance transformer kits have been designed for the Do-It-Yourself (DIY) enthusiast and Instructor workshops on baluns and ununs for antenna matching and RFI use.

The impedance transformers are classified in ratios of 2:1 (100:50 ohm) to 16:1 (800:50 ohm).  The outputs can be configured as balanced (Balun) or as unbalanced (unun) with respect to the inputs which are considered all unbalanced coax at 50 ohms.  All impedance transformers are designed for 1.8-31 MHz unless otherwise specified.