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
AM Broadcast, VLF RFI Kit, AC/DC/Audio/Control, RFI Range: .15-10 MHz, FREE USA ShippingProduct DetailsFilter Power Rating (PEP watts): n/aRFI Suppression Range (MHz): .3-3 MHzWe have put together a generic kit of 5 large 2.4″ ferrite rings for AC/DC line cords and 8 easy-to-use snap on beads (1/2″ hole) specifically chosen to be effective for the most common devices effected by AM Broadcast and VLF RFI in the range of 150 KHz to 10 Mhz.
Effective suppression for interference to alarm systems, audio equipment, phone and ethernet cables, computers and control systems, and commercial and consumer electronic devices.
Complete with instruction manual with installation pictures. If you can screw in a light bulb and follow instructions, you should have no problem installing the chokes on your effected equipment.
We have put together a generic kit of 5 large 2.4″ ferrite rings for AC/DC line cords and 8 easy-to-use snap on beads (1/2″ hole) specifically chosen to be effective for the most common devices effected by AM Broadcast and VLF RFI in the range of 150 KHz to 10 Mhz.
Effective suppression for interference to alarm systems, audio equipment, phone and ethernet cables, computers and control systems, and commercial and consumer electronic devices.
Complete with instruction manual with installation pictures. If you can screw in a light bulb and follow instructions, you should have no problem installing the chokes on your effected equipment.
