RF Toroid Calculator by VK3CPU
Super Choke - RFI Range: 1.8-54 MHz, -26 dB Common Mode Noise Reduction, 5 KW PEP, RG213/LMR400 - 3 inch ID RingProduct DetailsMPN: SC-1-1500Country/Region of Manufacture: USASuper Feed Line Choke- Excellent on 160-10 meters
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.
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 -26 dB ( 4 "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.
UHF (PL-259) Connectors on each end
Tutorials
Super Choke - RFI Range: 1.8-54 MHz, -26 dB Common Mode Noise Reduction, 5 KW PEP, RG213/LMR400 - 3 inch ID Ring
Product Details
MPN: SC-1-1500
Country/Region of Manufacture: USA
Super Feed Line Choke- Excellent on 160-10 meters
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.
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 -26 dB ( 4 "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.
UHF (PL-259) Connectors on each end
