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
Troubleshooter's Ferrite Pack Mix 31, 75, 61, 1/2" ID Snap-On, RFI Range 150 KHz-2000 MHz, 10 PiecesProduct DetailsMaterial: 31, 61, 75Max cable size - in/mm: .5/12.7OD (A) - in/mm: 1.22/31ID (B) - in/mm: .514/13.1Length (C) - in/mm: 1.55/5Ferrite Snap On, ID = .514in/13.1 mm, 10 Pack for troubleshooting unknown RFi frequencies
Use Mix 31 for 1-300 MHz - 4 pieces
Use Mix 61 for 200- 2000 MHz - 3 pieces
Use Mix 75 for150 KHz-10 MHz - 3 pieces
At last a troubleshooter's ferrite kit that works from 150 KHz to 2 H=GHZ. Now you can suppress RFi from unknown frequency ranges with a full spectrum of ferrite cores that have a 1/2" ID large enough for multiple turns of many common data and signal wires. Try 1 mix and see if it has an effect and if not then try another until you suppress the unknown frequencies. Or use them all to provide protection across a broad frequency range. 3 ferrite cores provide at least 500 ohms in the frequency band to give a measurable difference in RFI and noise suppression.
Square or Hex sided depending upon inventory stock
Ferrite Snap On, ID = .514in/13.1 mm, 10 Pack for troubleshooting unknown RFi frequencies
Use Mix 31 for 1-300 MHz - 4 pieces
Use Mix 61 for 200- 2000 MHz - 3 pieces
Use Mix 75 for150 KHz-10 MHz - 3 pieces
At last a troubleshooter's ferrite kit that works from 150 KHz to 2 H=GHZ. Now you can suppress RFi from unknown frequency ranges with a full spectrum of ferrite cores that have a 1/2" ID large enough for multiple turns of many common data and signal wires. Try 1 mix and see if it has an effect and if not then try another until you suppress the unknown frequencies. Or use them all to provide protection across a broad frequency range. 3 ferrite cores provide at least 500 ohms in the frequency band to give a measurable difference in RFI and noise suppression.
Square or Hex sided depending upon inventory stock