HF Impedance Transformer Kits

50:200 ohm (4:1) Transformers

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/50:200 ohm (4:1) Transformers
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2675770684 - HF Impedance Transformer Kits
50:200 (4:1) CUBE™ Balun, 1.8-61 MHz, 5KW (choose top stud/eyebolt output) - FREE USA SHIPPING
50:200 (4:1) CUBE™ Balun, 1.8-61 MHz, 5KW (choose top stud/eyebolt output) - FREE USA SHIPPING
SKU CB-4-5000TS
$149.95
3182280067 - HF Impedance Transformer Kits
50:200 (4:1) CUBE™ Current Balun, 1.8-61 MHz, 1.5KW - Loop, OCF, Folded Dipole useful to 200 MHz
50:200 (4:1) CUBE™ Current Balun, 1.8-61 MHz, 1.5KW - Loop, OCF, Folded Dipole useful to 200 MHz
SKU CB-4-1500EB
$124.95
1101114671 - HF Impedance Transformer Kits
50:200 (4:1) CUBE™ Unun, 1.8-61 MHz, 1500/5000 Watts PEP, End Fed, Vertical, Monopole
50:200 (4:1) CUBE™ Unun, 1.8-61 MHz, 1500/5000 Watts PEP, End Fed, Vertical, Monopole
SKU CU-4-1500
$109.95
2561718865 - HF Impedance Transformer Kits
50:200 (4:1) CUBE™ Voltage Balun, 1.8-61 MHz, 1.5KW - Carolina Windom, OCF, Loop Antennas
50:200 (4:1) CUBE™ Voltage Balun, 1.8-61 MHz, 1.5KW - Carolina Windom, OCF, Loop Antennas
SKU CB-4-1500EBV
$124.95
2990313247 - HF Impedance Transformer Kits
50:200 ohm (4:1) Dual Core Current Balun Kit, 1-55 MHz, 1500 watts PEP, for OCF, Loop, Ladder Line Antennas
50:200 ohm (4:1) Dual Core Current Balun Kit, 1-55 MHz, 1500 watts PEP, for OCF, Loop, Ladder Line Antennas
Ladderline to Coax Transformer
SKU BA-4-1500DC
$37.95
982795650 - HF Impedance Transformer Kits
50:200 ohm (4:1) HF Balun or Unun Core Kit, 3-31 MHz, 250 watts
50:200 ohm (4:1) HF Balun or Unun Core Kit, 3-31 MHz, 250 watts
SKU BA-4-250
$19.95
4599243816 - HF Impedance Transformer Kits
Bullet 50:200 (4:1) HF Balun, 1.8-61 MHz, 500/1500 Watts PEP, Loop, OCF, ZEPP
Bullet 50:200 (4:1) HF Balun, 1.8-61 MHz, 500/1500 Watts PEP, Loop, OCF, ZEPP
SKU Bullet-4B-500EB
$89.95
3854321637 - HF Impedance Transformer Kits
Bullet 50:200 (4:1) HF Unun, 1.8-61 MHz, 100/500/1500 Watts, End Fed OCF Antennas
Bullet 50:200 (4:1) HF Unun, 1.8-61 MHz, 100/500/1500 Watts, End Fed OCF Antennas
SKU Bullet-4U-100
$69.95
4599290833 - HF Impedance Transformer Kits
Bullet Hybrid (4:1) HF Balun + 1:1 Choke, 1.8-61 MHz, 500/1500 Watts, OCF, Loop, Folded Dipole Antennas
Bullet Hybrid (4:1) HF Balun + 1:1 Choke, 1.8-61 MHz, 500/1500 Watts, OCF, Loop, Folded Dipole Antennas
SKU BULLET-4-1-500EB
$119.95
On Sale
1725432616 - HF Impedance Transformer Kits
Hybrid 4:1 Balun + 1:1 Current Balun in one enclosure, 1.8-61 MHz, 1.5/5KW PEP - Loop, OCF Antennas
Hybrid 4:1 Balun + 1:1 Current Balun in one enclosure, 1.8-61 MHz, 1.5/5KW PEP - Loop, OCF Antennas
SKU CB-4-1-1500EB
List price $189.95
Save 26%
$139.95
4405471819 - HF Impedance Transformer Kits
MINI-BALUN 4:1 Coax Interface to Ladder Line, Loop, OCF antennas 500 Watts PEP, 1-61 MHz
MINI-BALUN 4:1 Coax Interface to Ladder Line, Loop, OCF antennas 500 Watts PEP, 1-61 MHz
SKU MB-4-500SS
$69.95
4016551822 - HF Impedance Transformer Kits
MINI-BALUN 9:1, Top Studs output, 500 Watts PEP, 1-61 MHz
MINI-BALUN 9:1, Top Studs output, 500 Watts PEP, 1-61 MHz
SKU MB-9-500TS
$59.95
On Sale
930357589 - HF Impedance Transformer Kits
Multi Ratio 4:1/6:1/9:1 CUBE™ Balun, 1.8-61 MHz, 1.5 KW
Multi Ratio 4:1/6:1/9:1 CUBE™ Balun, 1.8-61 MHz, 1.5 KW
SKU CB-4-9-1500
List price $149.95
Save 13%
$129.95
On Sale
3882535253 - HF Impedance Transformer Kits
Multi Ratio 50:200 (4:1) & 50:450 (9:1) CUBE™ Unun, 1.8-60 MHz, 1500W, End Fed
Multi Ratio 50:200 (4:1) & 50:450 (9:1) CUBE™ Unun, 1.8-60 MHz, 1500W, End Fed
SKU CU-4-9-1500
List price $169.95
Save 24%
$129.95
1653144024 - HF Impedance Transformer Kits
Off Center Fed (OCF) 4:1 Balun and 1:1 Balun Combo, 1.8-61 MHz, 1.5/5KW PEP Option
Off Center Fed (OCF) 4:1 Balun and 1:1 Balun Combo, 1.8-61 MHz, 1.5/5KW PEP Option
SKU CB-4-1500OCF
$139.95
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.