5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)
Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.
Typical application:
Also available as a balanced output – CB-5-1500
FSB31-3/16, ID=3/16", RFI Range 1-300 MHz - Single Piece USB, Mouse, Keyboard, Audio cable sizeProduct DetailsInitial Permeability (@ 10KHz): 1500Material: MnZnMax cable size - in/mm: .25/6.3OD (A) - in/mm: .788/20ID (B) - in/mm: .26/6.6Length (C) - in/mm: 1.55/39.4Z (ohms per bead - single turn 1 MHz): 28Z (ohms per bead - single turn 5 MHz): 83Z (ohms per bead - single turn 10 MHz): 105Z (ohms per bead - single turn 25 MHz): 180Z (ohms per bead - single turn 100 MHz): 310Z ohms (per bead - single turn 250 MHz): 240Ferrite Snap On, ID = .201 in, Mix 31
0.504" W x 0.220" H (12.80mm x 5.59mm)
Excellent for RFI/Noise reduction for AV cable, Coaxial Audio, Audio Power Line, IP Serial Port Camera, Computer USB, etc.,
Ferrite Snap On, ID = .201 in, Mix 31
0.504" W x 0.220" H (12.80mm x 5.59mm)
Excellent for RFI/Noise reduction for AV cable, Coaxial Audio, Audio Power Line, IP Serial Port Camera, Computer USB, etc.,