50:200 ohm (4:1) Transformers

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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

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

50:200 (4:1) CUBE™ Unun, 1.8-61 MHz, 1500/5000 Watts PEP, End Fed, Vertical, Monopole

SKU CU-4-1500

$119.95

50:200 (4:1) CUBE™ Voltage Balun, 1.8-61 MHz, 1.5KW - Carolina Windom, OCF, Loop Antennas

SKU CB-4-1500EBV

$124.95

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

50:200 ohm (4:1) HF Balun or Unun Core Kit, 3-31 MHz, 250 watts

SKU BA-4-250

$19.95

Bullet 50:200 (4:1) HF Balun, 1.8-61 MHz, 500/1500 Watts PEP, Loop, OCF, ZEPP

SKU Bullet-4B-500EB

$89.95

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

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

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 21%

$149.95

MINI-BALUN 4:1 Coax Interface to Ladder Line, Loop, OCF antennas 500 Watts PEP, 1-61 MHz

SKU MB-4-500SS

$69.95

MINI-BALUN 9:1, Top Studs output, 500 Watts PEP, 1-61 MHz

SKU MB-9-500TS

$59.95

On Sale

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

Multi Ratio 50:200 (4:1) & 50:450 (9:1) CUBE™ Unun, 1.8-60 MHz, 1500W PEP, End Fed Antennas

SKU CU-4-9-1500

List price ~~$169.95~~

Save 24%

$129.95

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

TUBE feed line chokes/Line Isolators are used to suppress common mode current carried on the outside of the coax braid which is often responsible for receiver noise and RFI in the receiver/transmitter. These chokes are very useful for suppressing RFI common mode current at the antenna feed point, at 1/4 wavelength intervals along the coax feed line and also at the entrance to the radio station. They are available with various input and output connectors so as to conveniently connect to standard output connectors already installed on your feed line.

Palomar Engineers TUBE feed line chokes are designed to have 2-5 times more choking impedance over a broader frequency range than competitor units in similar packaging. Each choke has the choking impedance and effective frequency range on the product label so you can choose the product best suited for your application.