Portable Operation RFI Kits

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

SKU CB-2-2000EB
$119.95
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$159.95 Save 25%
Bulk pricing available for quantities of 2 units or more
Output Connector
Power rating (PEP)
1
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10 items$99.9517% off
50 items$89.9525% 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.

Portable operation is fun but also brings challenges to the radio operator concerning receiver “noise” levels, RF interference from adjacent sources including close by transmitting stations, and RFI from portable generators.  A typical scenario and some suggested Palomar product solutions are shown in the picture below:

Generator RFI testimonial:

Bob 

Received your order in a timely fashion. Tried the generator kit on Sunday & it drops the noise from S9 to S5 and 
took out all the electrical noise.  I may want some more toroids from you at some point for other interference problems
I have  here.
Ken VE3KCY

Using an amplifier?  Don’t forget our Linear Amplifier RFI Kits

Want to make up your own RFI kits for a particular operation? Here are links to some of  typical RFI solutions used in portable operations:

AC/DC common mode filters

Feed Line chokes

Coax Noise Filters

If you use a computer for logging in your portable operations, RFI getting into computers will often lock up your computer and/or radio and a computer RFI suppression kits may be helpful

Computer RFI Kits

Make your expedition or portable operation a pleasant and fun outing and remember to take along your RFI kits so you have more time to operate rather then to troubleshoot intermittent or noisy receiver conditions.

Portable Antenna Kits

If you need an effective portable antenna which folds up for transport yet is easy to deploy at your operating site, consider the BULLET series of end fed wire antennas.

BULLET Antennas (click on link or picture for more info)

Bullet Antenna Product 300x292 - Portable Operation RFI Kits