5:1 Baluns/Ununs

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:

CU 5 1500 antenna - 5:1 Baluns/Ununs

Also available as a balanced output – CB-5-1500

Common Mode Noise Filter - AC or DC Power

Store/RFI Solution Kits/Radio Communication RFI Solutions/Common Mode Noise Filter - AC or DC Power
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3136934588 - 5:1 Baluns/Ununs
25-AMP (Peak) IN-LINE ELECTRONIC FILTER for 12 VOLTS DC, AUTOMOTIVE, RV RFI, ALTERNATOR, PULSE NOISE SUPPRESSION
25-AMP (Peak) IN-LINE ELECTRONIC FILTER for 12 VOLTS DC, AUTOMOTIVE, RV RFI, ALTERNATOR, PULSE NOISE SUPPRESSION
SKU RFI-N700
$49.95
3136886907 - 5:1 Baluns/Ununs
30-AMP (PEAK) IN-LINE TOROIDAL DC NOISE FILTER for 12 VOLTS, ALTERNATOR, PULSE NOISE SUPPRESSION
30-AMP (PEAK) IN-LINE TOROIDAL DC NOISE FILTER for 12 VOLTS, ALTERNATOR, PULSE NOISE SUPPRESSION
SKU RFI-N25
$34.95
2908543316 - 5:1 Baluns/Ununs
AC Power Cord Choke + Power Cord- 120VAC RFI Range: 1-30 MHz, -28 dB Noise Reduction, 15 Amp
AC Power Cord Choke + Power Cord- 120VAC RFI Range: 1-30 MHz, -28 dB Noise Reduction, 15 Amp
SKU AC-CHOKE-6
$19.95
982840112 - 5:1 Baluns/Ununs
AC/DC Generator RFI Noise Filter Kit - 3" ID - 2 filters
AC/DC Generator RFI Noise Filter Kit - 3" ID - 2 filters
SKU RFI-GEN-3
$74.95
982840124 - 5:1 Baluns/Ununs
AC/DC Generator RFI Noise Filter Kit = 1" ID - 2 filters
AC/DC Generator RFI Noise Filter Kit = 1" ID - 2 filters
SKU RFI-GEN-1
$39.00
982840128 - 5:1 Baluns/Ununs
Big Clamp On RFI Noise Filter for AC/DC power lines, Coax/Multi-wire cable - 1" ID
Big Clamp On RFI Noise Filter for AC/DC power lines, Coax/Multi-wire cable - 1" ID
SKU BCO31
$19.95
2654143998 - 5:1 Baluns/Ununs
DC Cable Noise Filter for 2 Gauge and Smaller Wire - 1.4" ID
DC Cable Noise Filter for 2 Gauge and Smaller Wire - 1.4" ID
SKU DCCF-1.4
$12.95
982840132 - 5:1 Baluns/Ununs
DC Cable Noise Filter for Large Gauge Wire - 3" ID
DC Cable Noise Filter for Large Gauge Wire - 3" ID
SKU DCCF-3
$39.95
On Sale
1025194824 - 5:1 Baluns/Ununs
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
1725564653 - 5:1 Baluns/Ununs
DC-AC Inverter Common Mode RFI/Noise Filter Kit for DC in and AC Output
DC-AC Inverter Common Mode RFI/Noise Filter Kit for DC in and AC Output
SKU RFI-INVERTER
$34.95
977476513 - 5:1 Baluns/Ununs
F240-31, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, AKA FT240-31
F240-31, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, AKA FT240-31
SKU F240-31-1
$9.99
On Sale
581498743 - 5:1 Baluns/Ununs
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 10
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 10
SKU FSB31-1-10
List price $195.00
Save 13%
$169.50
On Sale
581498743 - 5:1 Baluns/Ununs
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 3
FSB31-1, ID=1", RFI Range 1-300 MHz, Bulk Pack of 3
SKU FSB31-1-3
List price $58.50
Save 15%
$49.95
581498743 - 5:1 Baluns/Ununs
FSB31-1, ID=1", RFI Range 1-300 MHz, Case of 36 Pieces, FREE USA SHIPPING
FSB31-1, ID=1", RFI Range 1-300 MHz, Case of 36 Pieces, FREE USA SHIPPING
SKU FSB31-1-36
$550.00
581480127 - 5:1 Baluns/Ununs
FSB31-1-1, ID=1", RFI Range 1-300 MHz
FSB31-1-1, ID=1", RFI Range 1-300 MHz
SKU FSB31-1-1
$19.95
On Sale
581498141 - 5:1 Baluns/Ununs
FSB31-1.5, ID=1.465", RFI Range 1-300 MHz
FSB31-1.5, ID=1.465", RFI Range 1-300 MHz
SKU FSB31-1.5-1
List price $69.50
Save 28%
$49.95
On Sale
977476518 - 5:1 Baluns/Ununs
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
977476523 - 5:1 Baluns/Ununs
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Case of 100
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Case of 100
SKU F240-31-100
List price $1,000.00
Save 21%
$795.00
On Sale
977476518 - 5:1 Baluns/Ununs
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
3042762953 - 5:1 Baluns/Ununs
Power Pole DC Power Cord RFI/Noise Filter - up to 30dB Noise Reduction, 45 Amp Connectors
Power Pole DC Power Cord RFI/Noise Filter - up to 30dB Noise Reduction, 45 Amp Connectors
SKU PPNF-3
$34.95
4158534996 - 5:1 Baluns/Ununs
RFI Common Mode Noise Filter Kits for FLEX RADIO Antenna Genius Antenna Switches - Isolate Non-Selected Coax Braid Noise!
RFI Common Mode Noise Filter Kits for FLEX RADIO Antenna Genius Antenna Switches - Isolate Non-Selected Coax Braid Noise!
Suppress Unwanted Noise & RFI
SKU RFI-AS-FLEX-2
$179.95
581498141 - 5:1 Baluns/Ununs
Solar RFI/Noise Filter - 1.5" ID
Solar RFI/Noise Filter - 1.5" ID
SKU SNF-1.5
$49.50
1187030191 - 5:1 Baluns/Ununs
Switch Mode Power Supply (SMPS) Common Mode RFI/Noise Reduction Filter Kit
Switch Mode Power Supply (SMPS) Common Mode RFI/Noise Reduction Filter Kit
SKU RFI-SMPS
$27.95
1008627783 - 5:1 Baluns/Ununs
Wall Wart RFI Noise Filter Bulk Pack of 10 Filters
Wall Wart RFI Noise Filter Bulk Pack of 10 Filters
SKU RFI-WW-10
$29.95
982840116 - 5:1 Baluns/Ununs
Wall Wart RFI Noise Filter Bulk Pack of 100 filters
Wall Wart RFI Noise Filter Bulk Pack of 100 filters
SKU RFI-WW-100
$199.95
1008627776 - 5:1 Baluns/Ununs
Wall Wart RFI Noise Filter Pack (5 filters)
Wall Wart RFI Noise Filter Pack (5 filters)
SKU RFI-WW-5
$16.95
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