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
Ethernet Hub/Switch RFI Kit - DC + Cable Filters (4/8 port option)Product DetailsMPN: RFI-HUBType: NewCountry/Region of Manufacture: United StatesFilter Power Rating (PEP watts): n/aRFI Suppression Range (MHz): 1-300 MHz# Ferrite Filters: 8Enclosure Size (inches): n/aTypical Use:: 1-2 turns on I/O linesThese RFI kits are specifically selected to cure most household computer device RFI problems. It contains ferrite toroids for AC or DC power supply protection and Snap On ferrite split beads selected to eliminate RFI from 1 to 300 Mhz. The beads are easy to use, don’t require modification of the protected equipment and work in almost all cases, even when plug-in filters fail.
Includes DC supply ring filter, four split beads for Ethernet I/O line filters - useful for HUB/Switch configurations
These RFI kits are specifically selected to cure most household computer device RFI problems. It contains ferrite toroids for AC or DC power supply protection and Snap On ferrite split beads selected to eliminate RFI from 1 to 300 Mhz. The beads are easy to use, don’t require modification of the protected equipment and work in almost all cases, even when plug-in filters fail.
Includes DC supply ring filter, four split beads for Ethernet I/O line filters - useful for HUB/Switch configurations