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
Noise Filters - AC/DC
Our noise filters are designed to suppress common mode noise on AC/DC power lines, Switching Mode Power Supply (SMPS) input/output, and computer/instrumentation power input/output/control lines. Also suitable for PLC control line noise suppression (use mix 77/75 ferrite filters).
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DC Voltage Common Mode Noise Filter - Marine, RV, Communications, 600 Volts/30 Amps
DC Voltage Common Mode Noise Filter - Marine, RV, Communications, 600 Volts/30 Amps
SKU RFI-DC-30
List price
$109.95
Save 18%
$89.95
On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
SKU F240-31-10
List price
$100.00
Save 10%
$89.95
On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Mini Pack of 3
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Mini Pack of 3
SKU F240-31-3
List price
$34.95
Save 14%
$29.95
FT240-61, ID=1.4", RFI Range 200-2000 MHz
FT240-61, ID=1.4", RFI Range 200-2000 MHz
SKU F240-61-1
$16.95
Noise Filters - AC/DC
Our noise filters are designed to suppress common mode noise on AC/DC power lines, Switching Mode Power Supply (SMPS) input/output, and computer/instrumentation power input/output/control lines. Also suitable for PLC control line noise suppression (use mix 77/75 ferrite filters).
