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.

50:50 ohm (1:1) Transformers

50:75 ohm (1.5:1) Transformers

50:100 ohm (2:1) Transformers

50:112 ohm (2.25:1) Transformer

50:200 ohm (4:1) Transformers

50:250 ohm (5:1) Transformers

50:300 ohm (6:1) Transformers

50:400 ohm (8:1) Transformers

50:450 ohm (9:1) Transformers

50:600 ohm (12:1) Transformers

50:800 ohm (16:1) Transformers

25:1-81:1 Baluns/Ununs

Multi-Ratio Transformers

Hybrid (NN:1 + 1:1) Transformers

Off Center Fed Dipole Transformers

Ladder Line to coax transformers

Enclosure Boxes and Hardware

Balun/Unun DIY Kits

Mobile RFI kits work two ways: They suppress RFI from on board computers and other sensing/control devices in your vehicle that may cause your radio to be a VICTIM of RFI, and second they suppress RFI generated by your radio as a SOURCE which may affect your on board computers or other devices. Mobile operations of HF radios (1-30 Mhz) tend to experience more RFI effects than VHF/UHF mobile stations. If you have both HF and VHF installations in your vehicles, you may need both kits.

To address separate solutions we have developed two separate RFI kits: one for HF (1.8-300 MHz) mobile installations and another for VHF/UHF (30-1000 MHz) mobile installations. Each kit uses the appropriate ferrite mix for the frequency range desired.