Balun/Unun DIY Kits
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![HF Impedance Transformer Kits 890710979 - HF Impedance Transformer Kits](https://i0.wp.com/d2j6dbq0eux0bg.cloudfront.net/images/10325621/890710979.jpg?ssl=1)
Enclosure Box - 4.375" x 4.375" x 2.375"
Enclosure Box - 4.375" x 4.375" x 2.375"
SKU CB-Box-1
$14.95
On Sale
![HF Impedance Transformer Kits 2329254355 - HF Impedance Transformer Kits](https://i0.wp.com/d2j6dbq0eux0bg.cloudfront.net/images/10325621/2329254355.jpg?ssl=1)
FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz
FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz
SKU F140-43
List price
$4.50
Save 14%
$3.89
![HF Impedance Transformer Kits 3215425216 - HF Impedance Transformer Kits](https://i0.wp.com/d2j6dbq0eux0bg.cloudfront.net/images/10325621/3215425216.jpg?ssl=1)
Side Eyebolt Kit - 1/4-20 Stainless Steel
Side Eyebolt Kit - 1/4-20 Stainless Steel
SKU SEK-1/4-1
$5.95
![HF Impedance Transformer Kits 581480973 - HF Impedance Transformer Kits](https://i0.wp.com/d2j6dbq0eux0bg.cloudfront.net/images/10325621/581480973.jpg?ssl=1)
SO-239 Kit (female chassis connector + hardware)
SO-239 Kit (female chassis connector + hardware)
SKU SO-239 Kit-1/2
$3.95
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.