PEI Registered Trademark

Palomar Engineers provides ferrite products and filters to suppress RFI/EMI interference and radio receiver noise from 100 KHz to 1000 MHz.  We also manufacture antennas and related  products including common mode coaxial feed line chokes, power combiner-splitters, DC interference filters, and broadband impedance transformers used for antenna and transmission line matching.


Our RFI products are used in AM/FM Broadcast stations, amateur and commercial radio stations, consumer households, radar sites, solar power sites, the International Space Station, automotive, marine, medical, military, and numerous industrial and manufacturing operations and university research centers.

50 anniversary51st Anniversary Special – FREE SHIPPING ON ALL USA RETAIL ORDERS OVER $100

Click on Image for product info

Ferrite Toroids - Mix 31, 43, 61, 77

Ferrite Toroids – Mix 31, 43, 52, 61, 77, W

RFI Solutions

RFI Solutions from Kilohertz to Gigahertz

SNAP ON Ferrite Beads

SNAP ON Ferrite Beads Mix 31, 61, 75

Balun Kits 1:1 4:1 9:1

Balun/Unun Kits 1:1-16:1

Ferrite Beads

Slip On Ferrite Beads

CUBE Baluns™

CUBE™ Baluns/Ununs

kurt speaks out

Kurt Sterba Products

Super Choker

Super Choker

sleeve balun - 45 degrees

Coax Feed Line Chokes

Bullet Antenna Product

End Fed Antennas

OCF Antennas

OCF Antennas

Coax Noise Filter

Coax Noise Filter

Ladder line Baluns

Ladder Line Baluns




DC Noise Filter



 Portable Operation Antennas and RFI Ideas

Got RFI Problems? Download Latest RFI Tip Sheet HERE

Hams – are you the VICTIM or the SOURCE of RFI?

Check out our Ham Radio RFI Solutions Cheat Sheet


New 30-150 Mhz Baluns/Ununs


NEW Mini QRP Baluns/Ununs in ratios: 1:1, 1.5:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7.5:1, 9:1, 12:1, 16:1 – Great for beverage antennas, portable antennas, mini loops, verticals, end feds, zepp, dipoles, etc. Click HERE

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The BULLET – End Fed Antenna Matcher (Click picture for more info)

Bullet Product-2


NEW!!!! – Amplifier RFI KITS for Alpha, Ameritron, B&W, Collins, Command, Dentron, Drake, Gonset, Hallicrafters, Hammarlund, Heathkit, Henry, Hunter, Kenwood Icom, National, Palomar, Palstar, QRO, SBE, Swan, Tokyo Hy-Power, Yaesu & homebrew or commercial

Check Bits & Pieces Link for spare parts for old Palomar Engineers products


We Ship Worldwide



Check out the new “DOWNLOADS” section under TECH Support with older Palomar Engineers(TM) product manuals



NEWS FLASH: Palomar Engineers donated RFI Products for all the operating stations for the A35T, Tonga 2016 DXPEDITION .  Follow their progress at http://tonga2016.com/.

We are always looking for new products to sell or distribute under the Palomar Engineers name – if you have a product or idea, please send us an email at Sales@Palomar-Engineers.com and we will be glad to discuss it with you.



Are you an Audiophile, Ham or Musician that uses vacuum tubes?  Please visit our sister company at www.TubeMeister.net (or click on logo below) for a great selection of custom assembled vacuum tube sets for your favorite radio set or amplifier.


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