HF Impedance Transformer Kits

Audio System RFI (PA, Studio, Audiophile)

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2908543316 - HF Impedance Transformer Kits
AC Power Cord Choke + Power Cord- 120VAC RFI Range: 1-30 MHz, -28 dB Noise Reduction, 15 Amp
AC Power Cord Choke + Power Cord- 120VAC RFI Range: 1-30 MHz, -28 dB Noise Reduction, 15 Amp
SKU AC-CHOKE-6
$19.95
3185527343 - HF Impedance Transformer Kits
Audio RFI Suppressor for XLR cables - Simple in line filtering with male/female extension, Select AM Broadcast or Ham Band Filter Range
Audio RFI Suppressor for XLR cables - Simple in line filtering with male/female extension, Select AM Broadcast or Ham Band Filter Range
SKU RFI-XLR-6AM
$29.95
On Sale
581498616 - HF Impedance Transformer Kits
Audiophile System RFI Kit for Tuner/Preamp/Receiver, Turntable, CD Player, Speakers - 12 filters
Audiophile System RFI Kit for Tuner/Preamp/Receiver, Turntable, CD Player, Speakers - 12 filters
SKU RFI-AF
List price $89.95
Save 22%
$69.95
On Sale
581498743 - HF Impedance Transformer Kits
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 3
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 3
SKU FSB31-1-3
List price $58.50
Save 15%
$49.95
581498743 - HF Impedance Transformer Kits
FSB31-1, ID=1", RFI Range 1-300 MHz, Case of 36 Pieces, FREE USA SHIPPING
FSB31-1, ID=1", RFI Range 1-300 MHz, Case of 36 Pieces, FREE USA SHIPPING
SKU FSB31-1-36
$550.00
581480127 - HF Impedance Transformer Kits
FSB31-1-1, ID=1", RFI Range 1-300 MHz
FSB31-1-1, ID=1", RFI Range 1-300 MHz
SKU FSB31-1-1
$19.95
On Sale
581498719 - HF Impedance Transformer Kits
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 10 Pack
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 10 Pack
SKU FSB31-1/2-10
List price $55.00
Save 9%
$49.95
On Sale
581498359 - HF Impedance Transformer Kits
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 15 Pack
FSB31-1/2, ID=1/2", RFI Range 1-300 MHz - Bulk 15 Pack
SKU FSB31-1/2-15
List price $148.50
Save 53%
$69.95
On Sale
2520706711 - HF Impedance Transformer Kits
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
SKU FSCP-31-22
List price $108.00
Save 12%
$95.00
NEW
3111641616 - HF Impedance Transformer Kits
Heil Parametric Receive Audio System RFI Kit - 6 filters
Heil Parametric Receive Audio System RFI Kit - 6 filters
SKU RFI-PRAS
$49.95
On Sale
982808129 - HF Impedance Transformer Kits
Home Theater System RFI Kit for up to 4 HDTV, A/V units + I/O cables - 12 filters
Home Theater System RFI Kit for up to 4 HDTV, A/V units + I/O cables - 12 filters
SKU RFI-HTS
List price $89.95
Save 22%
$69.95
3903563961 - HF Impedance Transformer Kits
RFI Suppressor for F Connector Cables - Simple in line filtering with male/female extension, Select AM Broadcast or Ham Band Filter Range
RFI Suppressor for F Connector Cables - Simple in line filtering with male/female extension, Select AM Broadcast or Ham Band Filter Range
SKU RFI-F-AM
$29.95
On Sale
3200214215 - HF Impedance Transformer Kits
SATELLITE/CABLE TV RFI Kit - Filters for AC Power + 2 I/O (HDMI, Coax) cables
SATELLITE/CABLE TV RFI Kit - Filters for AC Power + 2 I/O (HDMI, Coax) cables
SKU RFI-CABLETV
List price $29.95
Save 33%
$19.95
On Sale
1971626808 - HF Impedance Transformer Kits
SMART TV RFI/Noise Reduction Kit - AC Power + 4 I/O (HDMI, Audio) cables
SMART TV RFI/Noise Reduction Kit - AC Power + 4 I/O (HDMI, Audio) cables
SKU RFI-HDTV
List price $89.95
Save 67%
$29.95
1008627783 - HF Impedance Transformer Kits
Wall Wart RFI Noise Filter Bulk Pack of 10 Filters
Wall Wart RFI Noise Filter Bulk Pack of 10 Filters
SKU RFI-WW-10
$29.95
982840116 - HF Impedance Transformer Kits
Wall Wart RFI Noise Filter Bulk Pack of 100 filters
Wall Wart RFI Noise Filter Bulk Pack of 100 filters
SKU RFI-WW-100
$199.95
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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.