The simplest, most cost effective feed line choke is a ferrite ring installed as shown in the picture (at the antenna feed point) to stop feed line radiation or at the radio end of the coax to suppress common mode coax noise current on the coax braid.
Great choke for log periodics, HF beams, Transceiver/Amp isolation
Improves antenna pattern by preventing your dipole from becoming a tripole
Suppresses pesky coax braid radiation and RFI
Reduces coax braid common mode current up to -40 dB ( 6 “S” units) on receive
Use one choke for each antenna feed line
Add a double female barrel connector to act as an “extension” of the existing coax.
NEW PRODUCT ALERT
BULLET™ END FED ANTENNAS - 80-6 Meter - 100/500/1500 Watts
SHORTER, SAFER, MORE BANDS THAN EFHW
Bullet end fed antennas are shorter than conventional dipoles, yet deliver superior performance on many bands using the radiating coax as part of the antenna. They come in a variety of power levels, and work great for portable or permanent installations. Thousands in use world-wide! Selected models available at Ham Radio Outlet and all available on company website where full details on these antennas and many accessories are shown.
BULLET-2006 Antenna (Click for more info)
BULLET-4006 Antenna (Click for more info)
BULLET-8006 Antenna (click for more info)
Palomar Engineers Antenna Info Sheet
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Ferrite Products - Rings, Snap On, Slip On, useful from 150KHz - 2 GHZ, Mixs 31, 43, 52, 61, 75
RFI Solutions - Consumer Electronics, Computer, Audio/Home Theater, Wall Warts, Solar and more!
Baluns/Ununs/Chokes (1:1-81:1 ratios) for RX, 100/500/1500/5000 Watts including Hybrids (with choke) and Multi-Ratio
Radio Transceiver/Linear Amplifier RFI Kits - All Brands, VLF, HF to UHF
Noise Filters - Coax, AC and DC power 100 KHz - 150 MHz, up to -48 dB noise suppression - hear DX again!
Palomar Engineers® products are over engineered to outperform the competition without being over priced!Buy DIRECT, on eBay or at Ham Radio Outlet stores nationwide, HRO Product List HERE QUICK and EASY RFI Solutions for Consumer Electronics - FREE RFI Tip Sheet |
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