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 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). Included in these combo packs are our most popular snap on sizes as follows:
Model SB-3 is a static bleeder meant for ladder line use. It is rated from 1-60 Mhz at 3 KW with a maximum SWR of 10:1 on the line. The SB-3 bleeder is used in line with an existing ladder line fed antenna usually at the entrance to the radio shack, and on the “antenna side” of the antenna tuner.
Either ladder line connector can be used for input/output (bi-directional) and a ground should be connected to the Ground Lug. Under normal static conditions, the SB-3 will bleed off residual static. For very high static voltage it is recommended that the ladder line be grounded directly.