HF Impedance Transformer Kits

Ring - Mix 31 - RFI Range: 1-300 MHz

Store / Ring - Mix 31 - RFI Range: 1-300 MHz

Mix # 31, Material: MnZn, Initial Permeability: 1500

Refine by
982808144 - HF Impedance Transformer Kits
AC Cable Noise Filter for Large Plugs - 3" ID
AC Cable Noise Filter for Large Plugs - 3" ID
SKU ACCF-3
$39.95
2654217922 - HF Impedance Transformer Kits
AC Cable Noise Filter for Standard 120VAC Plugs - 1.4" ID
AC Cable Noise Filter for Standard 120VAC Plugs - 1.4" ID
SKU ACCF-1.4
$12.95
982840130 - HF Impedance Transformer Kits
DC Cable Noise Filter for Large Gauge Wire - 3" ID
DC Cable Noise Filter for Large Gauge Wire - 3" ID
SKU DCCF-3
$39.95
977476514 - HF Impedance Transformer Kits
F240-31, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, AKA FT240-31
F240-31, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, AKA FT240-31
SKU F240-31-1
$9.99
On Sale
1487159529 - HF Impedance Transformer Kits
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
SKU FRSCP-31-20
List price $155.00
Save 10%
$139.95
On Sale
2385220513 - HF Impedance Transformer Kits
Ferrite Ring Combo Pack, FT140 - .9" ID, 15 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz
Ferrite Ring Combo Pack, FT140 - .9" ID, 15 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz
SKU FRCP-140-15
List price $58.35
Save 14%
$49.95
2385175843 - HF Impedance Transformer Kits
Ferrite Ring Combo Pack, FT140 - .9" ID, 6 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz
Ferrite Ring Combo Pack, FT140 - .9" ID, 6 Rings - Mix 43, 61, 77, RFI Range .1-2000 MHz
SKU FRCP-140-6
$21.95
On Sale
2385165615 - HF Impedance Transformer Kits
Ferrite Ring Combo Pack, FT240 - 1.4" ID, 10 Rings - Mix 31(4), 61(3), 75(3), RFI Range .15-2000 MHz
Ferrite Ring Combo Pack, FT240 - 1.4" ID, 10 Rings - Mix 31(4), 61(3), 75(3), RFI Range .15-2000 MHz
SKU FRCP-240-10
List price $139.50
Save 14%
$119.95
2385087468 - HF Impedance Transformer Kits
Ferrite Ring Mini Combo Pack, FT240 - 1.4" ID, 3 Rings - Mix 31, 61, 75, RFI Range .15-2000 MHz
Ferrite Ring Mini Combo Pack, FT240 - 1.4" ID, 3 Rings - Mix 31, 61, 75, RFI Range .15-2000 MHz
SKU FRCP-240-3
$39.50
On Sale
1939449975 - HF Impedance Transformer Kits
Ferrite Sampler Pack, Mix 31, RFI Range 1-300 MHz - 25 filters- 1.4" ID Ring, Snap on 1/4, 3/8, 1/2, 3/4, 1, Slip On 1/2, 1/4
Ferrite Sampler Pack, Mix 31, RFI Range 1-300 MHz - 25 filters- 1.4" ID Ring, Snap on 1/4, 3/8, 1/2, 3/4, 1, Slip On 1/2, 1/4
SKU FSP-31-25
List price $127.00
Save 22%
$99.50
On Sale
672806530 - HF Impedance Transformer Kits
Ferrite Snap on/Ring Combo Pack, Mix 31, RFI Range 1-300 MHz - 16 filters
Ferrite Snap on/Ring Combo Pack, Mix 31, RFI Range 1-300 MHz - 16 filters
SKU FSRCP-31-16
List price $112.00
Save 15%
$95.00
On Sale
977476519 - HF Impedance Transformer Kits
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
SKU F240-31-10
List price $100.00
Save 10%
$89.95
On Sale
977476524 - HF Impedance Transformer Kits
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Case of 100
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Case of 100
SKU F240-31-100
List price $1,000.00
Save 21%
$795.00
On Sale
977476519 - HF Impedance Transformer Kits
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Mini Pack of 3
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Mini Pack of 3
SKU F240-31-3
List price $34.95
Save 14%
$29.95
977476499 - HF Impedance Transformer Kits
FT400-3I, ID=3", RFI Range 1-300 MHz
FT400-3I, ID=3", RFI Range 1-300 MHz
SKU F400-31-1
$39.95
On Sale
1307174375 - HF Impedance Transformer Kits
FT400-3I, ID=3", RFI Range 1-300 MHz, Case of 25
FT400-3I, ID=3", RFI Range 1-300 MHz, Case of 25
SKU F400-31-25
List price $873.75
Save 5%
$829.95
On Sale
749899728 - HF Impedance Transformer Kits
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
SKU MRSCP-31-17
List price $112.00
Save 15%
$95.00
On Sale
749899753 - HF Impedance Transformer Kits
RV/Trailer Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
RV/Trailer Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
SKU RVCP-31-17
List price $112.00
Save 15%
$95.00
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.