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Palomar Engineers provides ferrite and iron power core products for radio communication and filters for (RFI/EMI) interference and noise suppression from 100 Khz to 1000 Mhz.  We also stock antenna products including common mode feed line chokes, and broadband impedance transformers in ratios 1:1 to 16:1 used for antenna and transmission line matching and radio receiver noise reduction.


Our RFI products are used in AM/FM Broadcast stations, Amateur Radio stations, consumer households, radar installations,  automotive, solar and medical equipment, and industrial and manufacturing operations.

50 anniversary50th 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, 75, 77

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

Superchoker 4010 - 40-10 meters


sleeve balun - 45 degrees

Sleeve Chokes



Got RFI Problems? Download Latest RFI Tip Sheet HERE

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

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: A35T, Tonga 2016 DXPEDITION ordered Palomar Engineers RFI Products for all their operating stations.  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 made vacuum tube sets.


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