Bullet 50:450 (9:1) HF Balun, 1.8-61 MHz, 500/1500 Watts, T2FD, BBTD, ALE

Name: Bullet 50:450 (9:1) HF Balun, 1.8-61 MHz, 500/1500 Watts, T2FD, BBTD, ALE
Brand: Palomar Engineers
SKU: Bullet-9B
Price: 89.95 USD
Availability: InStock

Store/Antenna Products/Complete Antenna Systems/Broadband Terminated Dipoles (T2FD, BBTD)

SKU Bullet-9B-500EB

$89.95

Bulk pricing available for quantities of 2 units or more

Power Rating

500 Watts PEP/FT8

1500 Watts PEP/FT8 (+$40.00)

Quantity:

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Quantity	Price per item	Discount
2 items	$79.95	11% off

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Bullet 50:450 (9:1) HF Balun, 1.8-61 MHz, 500/1500 Watts, T2FD, BBTD, ALE

Store/Antenna Products/Complete Antenna Systems/Broadband Terminated Dipoles (T2FD, BBTD)

Product Details

Country/Region of Manufacture: USA

Type: NEW

Input ohms/Output ohms: 50 in, 450 out

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

PEP Power Rating (watts): 500/1500

Transformer Topology: Braodband Ferrite

Hardware Type: Stainless Steel

Weight (pounds): 2

Antenna Compatability: T2FD, BBTD, ALE, Rhombic

The Bullet-9B is a multi-core balun with a compact enclosure (looks like a bullet) enclosure that is lightweight and easy to transport for your fixed/portable ALE, T2FD or BBTD antenna systems. Also useful for rhombics and other wire antennas needing balanced 450 ohm output. Halyard hoist at top of balun for convenient attachment point. Input is via SO-239 coax connector and output with side eye bolt output.Use a 500 ohm non-inductive termination resistor for the T2FD when using this balun.

This transformer requires a feed line choke to isolate the coax feed line from the antenna. A coax noise filter at the radio end of the coax is also recommended to reduce common mode noise current picked up by the coax braid.

Available in 500 watts and 1500 watt models

Remember we over engineer our products, to out perform our competition - just compare the weight of our baluns to theirs and you will know we put much more into our products so you don't have to worry about failure at a critical moment.

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).