Balun/Unun DIY Kits

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/Balun/Unun DIY Kits

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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

50:450 ohm (9:1) Balun or Unun Core Kit, .5-32 MHz, 1000 watts PEP, end fed/Ladder Line, T2FD antenna

SKU BA-9-1000

$29.95

50:450 ohm (9:1) Balun or Unun Core Kit, 1.8-30 MHz, 250 watts PEP, end fed, T2FD antenna

SKU BA-9-250

$21.95

50:50 ohm (1:1) Common Mode Choke HF Balun Kit - 1500 watt PEP, 1.8-31 MHz

SKU BA-1-1500

$29.97

Enclosure Box - 4" x 4" x 4"

SKU CB-Box-2

$19.95

Enclosure Box - 4.375" x 4.375" x 2.375"

SKU CB-Box-1

$14.95

Enclosure Box - 6" x 6" x 4"

SKU CB-Box-3

$27.95

On Sale

FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz

SKU F140-43

List price ~~$4.50~~

Save 14%

$3.89

Halyard Hoist Eyebolt Kit - 1/4-20 Stainless Steel

SKU TEK-1/4-1

$4.95

N Connector Kit (female chassis connector)

SKU UG-58-1

$7.49

Preassembled Balun & Unun Boxes, Stainless Hardware - just add your ferrite choke or transformer

SKU CU-BOX-1-SO

$49.95

SO-239 Kit (female chassis connector + hardware)

SKU SO-239 Kit-1/2

$3.95

Side Eyebolt Kit - 1/4-20 Stainless Steel

SKU SEK-1/4-1

$5.95

Side or Top Stud Kit - 1/4-20 Stainless Steel

SKU SSK-1/4-1

$3.95

UHF PL-259 Male Plug to SO-239 Female Right Angle 90 Degree RF Adapter Connector

SKU UHF-90

$6.95

Also make sure you connect a good RF ground to the transceiver ground post.

Note to Flex Radio users: Use snap on ferrites for firewire cable, speaker cable and mic cable, Ring ferrites for Antenna output and DC power.

For additional RFI suppression, use a feed line choke at the antenna to suppress common current on the coax feed line – see our store for feed line choke alternatives for use at the antenna.

If you use a linear amplifier we have RFI kits for linear amplifiers that help suppress RFI in your shack or in your neighbor’s house.