HF Impedance Transformer Kits

Slip On Sleeve Chokes

Store / Slip On Sleeve Chokes

sleeve balun 45 degrees gif - HF Impedance Transformer Kits

Palomar 1:1 feed line choke kits are current baluns (split output) or ununs (coax output). They consist of several models with 5-15 large ferrite beads that slip over the coax (but will not slip over a connector). Also included are three lengths of shrink tubing to enclose the balun and hold the beads in place on the cable. They work from 1.8-300 MHz (see impedance table for each product for measured choking impedance levels for 5-15 beads) and allow use of full power rating of the coaxial cable at an SWR of 1:1. No tools are required for installation, just a source of heat to shrink the tubing using a heat gun, lighter, matches.

Refine by
On Sale
3345961631 - HF Impedance Transformer Kits
Slip On Coax Feed Line Choke - 1"/25.4mm cable, 1.8-300 MHz
Slip On Coax Feed Line Choke - 1"/25.4mm cable, 1.8-300 MHz
SKU BA-200-5
List price $149.95
Save 27%
$109.95
On Sale
811140068 - HF Impedance Transformer Kits
Slip On Feed Line Choke/Isolator - 1/4"/6mm coax cable, RG-58/LMR240, 1-100 MHz
Slip On Feed Line Choke/Isolator - 1/4"/6mm coax cable, RG-58/LMR240, 1-100 MHz
SKU SLO31-1/4-5
List price $24.95
Save 28%
$17.95
On Sale
811140068 - HF Impedance Transformer Kits
Slip On Feed Line Choke/Isolator - 1/4"/6mm coax cable, RG-58/LMR240, 1.8-300 MHz
Slip On Feed Line Choke/Isolator - 1/4"/6mm coax cable, RG-58/LMR240, 1.8-300 MHz
SKU BA-58-5
List price $24.95
Save 32%
$16.95
On Sale
775856126 - HF Impedance Transformer Kits
Slip On Feed Line Common Mode Line Isolator - 1/2"/12.7mm coax cable, 1.8-300 MHz
Slip On Feed Line Common Mode Line Isolator - 1/2"/12.7mm coax cable, 1.8-300 MHz
SKU BA-8-5
List price $49.95
Save 60%
$19.95
On Sale
775856126 - HF Impedance Transformer Kits
Slip On Feed Line Common Mode Line Isolator/Choke - 1/2"/12.7mm coax cable, 1.8-100 MHz, 5,10,15, 20 bead option, Mix 31
Slip On Feed Line Common Mode Line Isolator/Choke - 1/2"/12.7mm coax cable, 1.8-100 MHz, 5,10,15, 20 bead option, Mix 31
SKU SLO31-1/2-5
List price $29.95
Save 33%
$19.95
On Sale
775856126 - HF Impedance Transformer Kits
Slip On Feed Line Common Mode Line Isolator/Choke - 3/4"/19.5mm coax cable, 1.8-100 MHz, 5,10,15,20 bead option, Mix 31, LMR600
Slip On Feed Line Common Mode Line Isolator/Choke - 3/4"/19.5mm coax cable, 1.8-100 MHz, 5,10,15,20 bead option, Mix 31, LMR600
SKU SLO31-3/4-5
List price $99.95
Save 30%
$69.95
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.