Bullet Antenna Products

Bullet™ and Super-Bullet™ Baluns and Ununs are 500/1500 watts PEP rated, purpose designed for portable and stealth installations for all antenna types.  Easy to deploy, heavy and sturdy enough to be thrown over a tree limb with ease and robust enough to run demanding digital modes like FT-8/FT-4, RTTY, and PSK31.  Buy the Bullet™ balun or unun of your choice and experience the fun of making your own custom antenna with our convenient wire add-on kits.  We are sure you will be pleased with the results.

Flex Radio 1000/1500 Transceiver RFI and Noise Reduction Kit, RFI Range 1-60 Mz, 5 Filters

SKU RFI-FLEX-1500
$39.95
Bulk pricing available for quantities of 2 units or more
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2 items$35.9510% off
10 items$33.9515% off
100 items$31.9520% off
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Flex Radio 1000/1500 Transceiver RFI and Noise Reduction Kit, RFI Range 1-60 Mz, 5 Filters
Product Details
MPN: RFI-FLEX-1500
Type: NEW
Country/Region of Manufacture: United States
Filter Power Rating (PEP watts): 500
RFI Suppression Range (MHz): 1-300 MHz
# Ferrite Filters: 5
Enclosure Size (inches): n/a
Typical Use:: AC/DC power, RF output, 3 additional I/O lines

Flex Radio 1000/1500 RFI kit is designed to be installed on your radio transceiver to reduce Radio Frequency Interference (RFI) caused by common mode current on the coax output of your radio, the AC/DC power cable, mic input, USB transverter RX/TX, and 10MHz clock input..

This kit will help reduce or eliminate:

1. “Hot mic” RFI caused by poor grounding of antennas or common mode currents from linear amps feeding unbalanced (coax fed) antennas without baluns/line isolators.

2. RFI to neighbor’s electronic devices including audio/video systems, computers, telephones, garage door openers, etc.

3. RFI to your other radios, audio/video systems, computers, telephones, etc.

A side benefit is a reduction in noise floor in your receiver depending on the amount of noise being introduced by common mode currents (which are blocked/reduced by the chokes in this kit).

These chokes use a special mix of ferrite core material that is effective in suppressing radio frequency interference from transmitters and high noise floor on receivers.

The split beads 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.

Use of the chokes often helps cure SWR problems between transceiver and a linear amp and between transceiver and antenna tuner or direct to antenna. The DC power line choke helps keep common mode current out of the power line which could cause interference to other devices connected to the same power line if not suppressed.

For additional RFI suppression, use a feed line choke at the antenna feed point to suppress common current on the coax feed line and a coax noise filter at the radio end of the coax to reduce common mode noise.


If you use a linear amplifier use an amplifier RFI kit for additional RFI interference suppression.