Common Mode Chokes, Line Isolators

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1:1 Current Balun

SKU BA-1-1000

$24.95

On Sale

Coax Inline Common Mode Choke Unun - 500 Watts 25-300 MHz- 10, 11, 6, 4, 2 Meters

SKU FC-8X-3-31

List price ~~$39.95~~

Save 30%

$27.95

Coax Inline Common Mode Choke Unun - 500 Watts 50-450 MHz

SKU FC-8X-5-61

$39.95

MAXI-CHOKER Coax Line Isolator/Balun, 1-61 MHz, 1.5/3KW, SO-239 In/Stud Output, FLAGPOLE OCF, G5RV, ZS6BKW, BN4000 Replacement, Ladder Line-Coax interface

SKU MC-1-1500LL

$89.95

MAXI-CHOKER Coax Line Isolator/Choke, 1-61 MHz, 1.5/3KW/5KW, up to -60 Db Common Mode Rejection, Static Bleeder Option

SKU MC-1-1500

$89.95

MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas

SKU MB-1-500SS

$69.95

MINI-CHOKER Coax Line Isolator, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, 1:1 Unun

SKU MC-1-500-50

$69.95

Maxi-Choker, 1:1 Line Isolator 3KW, 7-54 MHz Optimized for Wide Band Log Periodic, HF & 6M Beams. Noise Suppression up to 38 dB

SKU MC-1-3000LP

$109.95

RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!

Suppress Unwanted Noise & RFI

SKU RFI-AS-GEN-2

$129.95

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.