Computer RFI Kits

50:100 (2:1) CUBE™ Balun/Unun 1.8-61 MHz, 2KW/5KW, Loop Antennas

SKU CB-2-2000EB
$129.95
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List price $159.95 Save 19%
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Output Connector
Power rating (PEP)
1
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10 items$109.9515% off
50 items$99.9523% off
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50:100 (2:1) CUBE™ Balun/Unun 1.8-61 MHz, 2KW/5KW, Loop Antennas
Product Details
Country/Region of Manufacture: USA
Type: BALUN or UNUN
Input ohms/Output ohms: 50
Frequency Range < 2:1 SWR (MHz): 1.8-61
PEP Power Rating (watts): 2000/5000
Enclosure Size: 4" x 4" x 2"
Weight (pounds): 3
Antenna Compatability: loops, quads, 100 ohm input antennas

High Power rated at 2KW/5KW (option) PEP (FT8 mode at 1.5KW for 5KW PEP model)

Broad frequency range of 1.8-61 MHz for < 2:1 SWR into matched load. 5KW model is 1.8-31 MHz

Compact 4" x 4" x 2" (2KW) or 4" x 4" x 2" (5KW) light weight weatherproof enclosure

Quick, easy deployment with either halyard hoist or side mounting tabs

Choice of BALUN (balanced outputs) or UNUN (unbalanced output and ground)

Model CB-2-2000 is a 2:1 (100:50) quad core balun used to translate a 50 ohm input to 100 ohms at RF power levels up to 2000 watts PEP when used with a matched load such as single band delta loop, quad or loop skywire. This assembled balun features a multi-core configuration for increased power handling and flatter frequency response to over 60 MHz. With a matched 100 ohm load the SWR over the frequency range is very consistent from 1.8-61 MHz and SWR is less than 2:1 over the range allowing easy tuning by most radio internal antenna tuners or an external tuner.

Note: CU-2-2000SO picture shown CU-1.5-1500SO product but input/output connectors are correct.

These RFI kits are specifically selected to cure most household computer device RFI problems. It contains ferrite toroids for AC or DC power supply protection and Snap On ferrite spli beads selected to eliminate RFI from 1 to 1000 Mhz. The beads are easy to use, don’t require modification of the protected equipment and work in almost all cases, even when plug-in filters fail. 

 

 

Typical Installations

 

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Ethernet Cable on F-240 Toroid – 7 turns

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Ethernet Cable on FSB-1/2 – 3 turns for 9X Impedance

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Ethernet Cable on FSB-1/4

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AC Cable on F-240 Toroid – 6 turns

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DSL Modem DC Power Supply on F114-43 Toroid – 5 Turns