Mobile Station RFI Kits

50:112 (2.25:1) CUBE™ Balun 3-30 MHz, 1.5KW/3KW/5KW

SKU CB-2.25-1500TS
$109.95
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List price $159.95
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Output Connector
Power rating (PEP)
Input Connector
1
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50:112 (2.25:1) CUBE™ Balun 3-30 MHz, 1.5KW/3KW/5KW
Product Details
Country/Region of Manufacture: USA
Type: BALUN
Input ohms/Output ohms: 50
Frequency Range < 2:1 SWR (MHz): 3-30
PEP Power Rating (watts): 1500/3000/5000
Enclosure Size: 4" x 4" x 2" (1.5KW), 4" x 4" x 4" (3KW/5KW)
Weight (pounds): 3
Antenna Compatability: loops, quads, 112 ohm input antennas

High Power rated at 1.5KW/3KW/5KW (option) PEP (FT8 mode at 1.5KW)

Broad frequency range of 3-30 MHz for < 2:1 SWR into matched load

Compact 4" x 4" x 2" (1.5KW) or 4" x 4" x 4" (3KW/5KW) light weight weatherproof enclosure

Quick, easy deployment with either halyard hoist and side eyebolts or to stud outputs (all 1/4" stainless hardware)

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

Model CB-2.25-1500, 3000, 5000 is a 2.25:1 (112:50 ohm) multi-core balun used to translate a 50 ohm input to 112 ohms at RF power levels up to 5000 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 30 MHz. With a matched 112 ohm load the SWR over the frequency range is very consistent from 3-30 MHz and SWR is less than 2:1 over the range allowing easy tuning by most radio internal antenna tuners or an external tuner.

Mobile RFI kits work two ways: They suppress RFI from on board computers and other sensing/control devices in your vehicle that may cause your radio to be a VICTIM of RFI, and second they suppress RFI generated by your radio as a SOURCE which may affect your on board computers or other devices.  Mobile operations of HF radios (1-30 Mhz) tend to experience more RFI effects than VHF/UHF mobile stations.  If you have both HF and VHF installations in your vehicles, you may need both kits.

To address separate solutions we have developed two separate RFI kits: one for HF (1.8-300 MHz) mobile installations and another for VHF/UHF (30-1000 MHz) mobile installations.  Each kit uses the appropriate ferrite mix for the frequency range desired.