Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
| Quantity | Price per item | Discount |
| 2 items | $89.95 | 5% off |
Mix 31 Ferrite Snap On Combo pack (RFI Suppression range is 1-300 MHz)
The Ferrite Snap On Combo Pack is a convenient solution for troubleshooting RFI/EMI with various diameter cables ranging from 1/4″ to 3/4″ for use as either single turn or multiple turn ferrite chokes.
The snap on chokes are useful for RF coax, AC/DC power cables, and device interconnection cables.
Always use a snap on ferrite with a larger inside diameter than the diameter of the cable and use multiple turns if possible (2 turns through the snap on is the same as 4 snap ons with 1 turns in series).
Included in the combo pack are our most popular snap on sizes as follows:
FSB31-1/4 – 1/4″ ID – 6 pieces
FSB31-3/8 – 3/8″ ID – 6 pieces
FSB31-1/2 – 1/2″ ID – 6 pieces
FSB31-3/4 – 3/4″ ID – 4 pieces
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.