50:50 (1:1) CUBE™ Ladder line to Coax Balun, 1.8-61 MHz, 5 KW, G5RV/ZS6BKW - FREE USA Shipping

Name: 50:50 (1:1) CUBE™ Ladder line to Coax Balun, 1.8-61 MHz, 5 KW, G5RV/ZS6BKW - FREE USA Shipping
Brand: Palomar Engineers
SKU: CB-1-5000AT
Price: 129.95 USD
Availability: InStock

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/Ladder Line to coax transformers

SKU CB-1-5000AT

$129.95

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50:50 (1:1) CUBE™ Ladder line to Coax Balun, 1.8-61 MHz, 5 KW, G5RV/ZS6BKW - FREE USA Shipping

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/Ladder Line to coax transformers

Product Details

MPN: CB-1-5000AT

Input ohms/Output ohms: 50 ohms in, 50 - 150 ouhms output

Frequency Range < 2:1 SWR (MHz): 1.8-61 MHz

PEP Power Rating (watts): 5000

The CB-1-5000AT Antenna Tuner Balun is a 50 ohm to 50 ohm, triple core feed line choke designed to provide high choking impedance between a balanced ladder line feed line (zepp, G5RV/ZS6BKW, extended double zepp, etc.) and short 50 ohm coax feed line (to antenna tuner) at a power of 5000 watts PEP from 1.8 to 61 MHz. The CB-1-5000AT is configured as a Guanilla transmission line transformer with balanced outputs (current balun configuration). It is best used when ladder line impedance seen at the end of the ladder line to balun connection is close to 50-150 ohms. Enclosure box is 4″ x 4″ x 2″. Typical choking impedance range is 1K-10K ohms from 1-31 MHz.

Typical ZS6BKW multi-band antenna with CB-1-1500 or CB-1-5000

ZS6BKW at AK6R png - AM Broadcast RFI Kits

When considering solutions for AM broadcast (550 Khz – 1.8 Mhz) you should consider Mix 77 ferrites available in a variety of shapes and sizes. Choose a size to give the maximum number of turns of the affected wire or cable.

AM broadcast transmits on a low frequency with large antennas. Consequently it takes a large antenna to receive the signals. Typical “antennas” are AC house wiring, phone lines, long satellite or cable TV cables, DSL/CAT5 lines running between rooms, etc. The device wires that connect to these “antennas” need to be choked with as many turns through the ferrite as possible. Some installation examples are shown below on this page.

For AC/ DC power cords and coax cables the F240-77 (2.4″ OD, 1.4″ ID) “Donut” toroid is the most popular. Also available are smaller toroid donuts and Mix 77 beads. Shown below is a graph with 8, 10, and 12 turns through the toroid – obviously more turns has higher choking impedance. Mix 77 toroid products are HERE and Mix 77 small beads (for small wires) are HERE

F240 77 Turns Comparison 1024x648 - AM Broadcast RFI Kits

F240-77 Turns Comparison from .1 – 8.1 Mhz

Shown below is a graph of frequency response verses choking magnitude for a F240-77 in the AM Broadcast band for a 12 turn coil around the toroid. (Same info as above but different frequency range).