Fair-Rite Toroid Ring 2.4″ #31 Material

Availability:

In stock (can be backordered)


Fair-Rite Toroid Ring 2.4″ #31 Material (also known as FT-240-31) is a problem solver for RF interference problems. Save when ordering 3-, 5- and 10-pack.

14 $125 $

  • EUR: 12.00 € - 103.00 €
  • SEK: 128.45 kr. - 1,102.51 kr.

Clear

#31 material made by Fair-Rite Products is extremely useful, especially if your problem is below 5 MHz. By comparison to #43 material, #31 provides nearly 7 dB greater choking impedance at 2 MHz, and at least 3 dB more on 80 meters. At 10 MHz and above, the two materials are nearly equivalent. A feed-line choke made with #31 material is the best all round performer to cover all HF bands, and is clearly the weapon of choice at 5 MHz and below.

Jim Brown K9YC has published a must read Guide to RFI, Ferrites, Baluns, and Audio Interfacing. If you experience RF interference problems, read Jim’s A Ham’s Guide to RFI, Ferrites, Baluns, and Audio Interfacing.

SKU: FR-240-31 Category:
Weight 0.15 kg
Dimensions 8 × 8 × 2 cm
Quantity

1 pcs, 10 pcs, 3 pcs, 5 pcs