HF Impedance Transformer Kits

Snap On Sleeve Chokes

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Connector already on the cable? Don’t want to remove it? Use Snap On Ferrite split bead kits that clamp over the cable.

SNAP ON Sizes for Heliax and Coax Cable

Shown in the table are the SLIP ON and SNAP ON products for various popular Heliax and coax cables. These are the correct size for making common mode chokes for coaxial cable using either Snap On ferrite beads.

SNAP per Coax - HF Impedance Transformer Kits


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1263828534 - HF Impedance Transformer Kits
Dual Band VHF UHF Antenna Feed line Choke - J-Pole, Verticals, Hand Held Beams, mobile antennas - Choose 1/4", 1/2", 3/4" cable size, 100-500 MHz
Dual Band VHF UHF Antenna Feed line Choke - J-Pole, Verticals, Hand Held Beams, mobile antennas - Choose 1/4", 1/2", 3/4" cable size, 100-500 MHz
SKU SNO31-1/4-4UHFVHF
$14.95
2302699125 - HF Impedance Transformer Kits
Snap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast Band
Snap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast Band
SKU SNO75-1/2-5
$64.75
On Sale
622200445 - HF Impedance Transformer Kits
Snap On RF Choke - 1/4"/6mm cable, RG58/8X/LMR240, Heat Shrink Option
Snap On RF Choke - 1/4"/6mm cable, RG58/8X/LMR240, Heat Shrink Option
SKU SNO31-1/4-5W
List price $24.95
Save 12%
$21.95
On Sale
2303944699 - HF Impedance Transformer Kits
Snap On RF Choke/Isolator - 1/2"/12.7mm cable -5/10/15 Bead Option, 3-300 MHz
Snap On RF Choke/Isolator - 1/2"/12.7mm cable -5/10/15 Bead Option, 3-300 MHz
SKU SNO31-1/2-5
List price $29.95
Save 13%
$25.95
622200447 - HF Impedance Transformer Kits
Snap On RF Choke/Isolator - 1/4"/6mm cable, RG-58/59/06/LMR240 - 3-300 MHz, -5/10/15 Bead Option
Snap On RF Choke/Isolator - 1/4"/6mm cable, RG-58/59/06/LMR240 - 3-300 MHz, -5/10/15 Bead Option
SKU SNO31-1/4-5
$16.95
973552107 - HF Impedance Transformer Kits
Snap On RF Choke/Isolator - 3/4"/18.7mm cable, 5/10/15 Bead Option, 1-300 MHz
Snap On RF Choke/Isolator - 3/4"/18.7mm cable, 5/10/15 Bead Option, 1-300 MHz
SKU SNO31-3/4-5
$34.95
On Sale
622200447 - HF Impedance Transformer Kits
Snap On RF Choke/Isolator - 3/8"/9mm cable, 5/10/15 Bead Option, 1-300 MHz
Snap On RF Choke/Isolator - 3/8"/9mm cable, 5/10/15 Bead Option, 1-300 MHz
SKU SNO-3/8-5
List price $18.75
Save 4%
$17.95
On Sale
2303944699 - HF Impedance Transformer Kits
Snap On RF Choke/Line Isolator - 1"/25.4mm cable -5/10/15 Bead Option, 3-300 MHz, RG218
Snap On RF Choke/Line Isolator - 1"/25.4mm cable -5/10/15 Bead Option, 3-300 MHz, RG218
SKU SNO31-1-5
List price $87.50
Save 9%
$79.95
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.