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
Dual Band VHF UHF Antenna Feed line Choke - J-Pole, Verticals, Hand Held Beams, mobile antennas - Choose 1/4", 1/2", 3/4" cable size, 100-500 MHzProduct DetailsBrand: Palomar EngineersEffective Frequency Range (MHz): 100 MHz-500 MHzPEP Power Rating (watts): cable ratingCombo split bead kit for dual band antenna like 2 meters/450 MHz (J-poles, dual band verticals, etc) - 4 beads covers VHF and UHF band. Each set provides over 500 ohms of common mode resistance to keep antenna current off the coax and on the antenna for better radiation pattern and less coax radiation which can cause RFI to nearby electronics.
Simple to install at antenna feed point - just snap on!
Simple, effective and cheap solution - buy it now!
Combo split bead kit for dual band antenna like 2 meters/450 MHz (J-poles, dual band verticals, etc) - 4 beads covers VHF and UHF band. Each set provides over 500 ohms of common mode resistance to keep antenna current off the coax and on the antenna for better radiation pattern and less coax radiation which can cause RFI to nearby electronics.
Simple to install at antenna feed point - just snap on!
Simple, effective and cheap solution - buy it now!