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Manager - NA6M
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Classified: Palomar HF RF Choke Removed

Date Posted By Category User IP Address
2023-02-01Login requiredHF AntennasLogin required
New in retail package, $25 shipped

Effective Frequency Range (MHz): 3-300
PEP Power Rating (watts): same as coax cable rating
Choking Impedance Range (ohms): 5 bead: 500-1000
Common Mode Attenuation (db): 5 bead: 16-22db
Estimated Insertion Loss (db): .025

Use for 1/4? Cable – RG-58, RG59, RG-6, LMR-240, etc
For 1/4” cables use five FSB31-1/4 split beads for 80-10 meters (3-30 mHz)

Typical Impedance per split bead: 10 MHz: 100 ohms, 25 MHz: 163 ohms, 100 MHz: 275 ohms, 250 MHz: 275 ohm
Minimum recommended total impedance is 500 ohms at frequency of interest.

The beads clamp to the cable and may be operated as is for indoor use. However, it is strongly suggested that they be covered to protect the plastic covers from weathering – use electrical tape for best results or heat shrink to ensure longer life.