Baluns & Ununs (1:1-81:1 ratios) for RX, 100/500/1500/5000 Watts including Hybrids (with choke) and Multi-Ratio
RFI Solutions - Consumer Electronics, Ham Radio, Computer, Audio/Home Theater, Wall Warts, Solar and more!
Ferrite Products- Rings, Snap On, Slip On, useful from 150KHz - 2 GHZ, Mixes 31, 43, 52, 61, 75, 77
Radio Transceiver/Linear Amplifier RFI Kits - All Brands, VLF to UHF, QRP to Multi-KW
FREE USPS Ground SHIPPING to USA Destinations for orders over $100!
Columbus Day Weekend 2026 Sale
15% OFF All Website Products
from 10/10/2026-10/12/2026
- Use Discount Code PAL1492 -
Antennas, ferrites and RFI solutions engineered for operators who want to hear more
📚 FREE Helpful Technical Guides — Download Knowledge you can put on the air!
Learn how to select, configure and use our products to improve your station
OVER 10,000 Installed worldwide!
BULLET End Fed Antennas
Shorter, safer, more bands in less space than EFHW
Traditional dipole style but cut for more bands then other vendors!
End Fed OCF
160-6M, 80-6M, 40-6M or 20-6M but only 2 supports, shorter than EFHW - popular with POTA ops
Quieter on receive and multi-directional gain on higher bands, no need to rotate!
ZS6BKW Multi-band Ladder Line Fed
No tune on 5 bands!
Broadband Terminated Dipoles (BBTD, T2FD)
DIY Parts for ALE, MARS, Hi duty cycle data modes
Noise Filters - Coax, AC/DC Power 100 KHz - 150 MHz, up to -48 dB noise suppression - hear DX again!
OUR RFI STRATEGY: FIND IT - FIX IT - FORGET IT!
RF Detectors - SIGNALPEN(TM) PENCIL SIZE RF Detector, 60 Hz to 5 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery & Fits in Your Shirt Pocket!
SELECT A CATEGORY TO EXPLORE
Featured Products
$429.95
$329.95
$199.95
$159.95
$179.95
$189.95
$239.95
$55.00
$100.00
$459.95
$199.95
SLIP-ON FERRITE BEADS
Baluns are used to connect balanced antennas to unbalanced transmission lines (Coaxial cable) and Ununs are used to connect unbalanced transmission lines to unbalanced transmission lines or unbalanced antennas (e.g. verticals). In the case of 1:1 baluns the input is usually an unbalanced coax cable and the output load is a two terminal balanced load like an antenna. Ununs are also called line isolators, feed line chokes, and 1:1 coaxial baluns (incorrectly). 1:1 Baluns and ununs stop common mode currents (flowing on the outside of the coax braid due to skin effect) when they are located at the antenna feedpoint. They can also be used as “line isolators/chokes” anywhere along the cable to suppress flow of induced RF (antenna near field radiation and neighborhood noise pickup) which helps suppress RFI into the radio receiver/transmitter. For best results, put one at the antenna feed point connection, and one at the radio room entrance, and for difficult common mode current cases, one every 1/4 wavelength along the antenna feed line. For low (below 3 MHz) frequencies, use two 5 bead baluns in series to double the choking impedance or order the 10 bead or 15 bead version for higher choking power.