This Extra Large size Ring and Snap-On Combo Pack is our BEST VALUE and a convenient solution for troubleshooting RFI/EMI (150 KHz-10 MHz) with various diameter cables ranging from 1.4" to 1.4"/35.6mm for use as either single turn or multiple turn RFI filters. Great for Grab and Go portable operations or general RFI and noise suppression.
The filters are useful for RF coax, AC/DC power cables, Ethernet, data, audio/video and device interconnection cables.
Always use a snap on or ring 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 turn). Included in these combo packs are our most popular snap on sizes as follows:
Extra Large Combo Pack includes the following:
F240-75 ring – 1.4″/35.6mm ID – 6 pieces
FSB75-1/4 – 1/4″/9.5mm ID – 12 pieces
FSB75-1/2 – 1/2″/12.7mm ID – 10 pieces
Normal Retail price is $327 for these parts bought individually. You also get FREE USA SHIPPING for this item.
50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.
50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output. Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.