Computer RFI Kits

CUBE 1:1 Feed Line Choke Balun, 1.5KW, 1.8-61 MHz Eyebolt Version - Dipoles

SKU CB-1-1500EB
$119.95
Bulk pricing available for quantities of 2 units or more
Output Connector Selection
1
Buy more, save more
QuantityPrice per itemDiscount
2 items$109.958% off
Save this product for later
Customer reviews
No reviews yet. Only signed-in customers who bought this product can leave reviews. To leave a review, sign in
Share this product with your friends
CUBE 1:1 Feed Line Choke Balun, 1.5KW, 1.8-61 MHz Eyebolt Version - Dipoles
Product Details
Brand: Palomar Engineers
Effective Frequency Range (MHz): 1-61 MHz
PEP Power Rating (watts): 1500
Common Mode Attenuation (db): up to -38 dB
Estimated Insertion Loss (db): .10
Input Connector Type: SO-239 female
Output Connector Connector Type: side eyebolts and top halyard hoist
Enclosure Size (LxWxH inches): 4 x 4 x 2

1500 Watt PEP Rated 1:1 CUBE™ Balun for dipoles

* Help keep RF out of the shack.

* Provides maximum transfer of RF to the antenna.

* Suppress radiation from the feeder cable

* Makes the antenna radiation pattern predictable.

* Outperforms the competition by 24 dB common mode rejection! (see graphs)

* Reduces QRN and TVI to the neighbors.


The CB-1-1500 balun is useful as common mode feed line chokes or unbalanced coax to balanced antenna interface. SO-239 input to side terminal/eyebolt output. . Rated 1500 Watts PEP from 1-61 MHz. Common mode rejection up to -38dB over the frequency range. The CB-1-1500 is the balun version and the CU-1-1500 is the unun version (coax in and coax out).

Use as line isolator, antenna interface, or as a common mode choke to keep RF on the antenna and off the outside of the coax braid. Much more effective then our snap on ferrite beads as this balun which provides a higher choking impedance over a broad frequency range.

For most effective results, use another feed line choke (coax noise filter) at the radio. Helps reduce noise floor too by choking off common mode neighborhood noise picked up on outside of coax braid acting as secondary receive antenna


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

 

20131210 115137 150x150 - Computer RFI Kits

Ethernet Cable on F-240 Toroid – 7 turns

20131210 114800 150x150 - Computer RFI Kits

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

20131210 1148191 150x150 - Computer RFI Kits

Ethernet Cable on FSB-1/4

20131210 114716 150x150 - Computer RFI Kits

AC Cable on F-240 Toroid – 6 turns

20131210 114844 150x150 - Computer RFI Kits

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