K-Y Filter Company Model HF-1 SUPER RF Choke Specifications.

The RF choke used in our telephone/modem interference filters has two sections. Each section is bifilar wound on a nickel zinc toroid core (Amidon FT50B-43).

Specifications:
Series resistance (single wire).........................Approximately 1.0 Ohm
Maximum current....conservatively rated at 300 ma continuous dc for each wire

Inductance...........................................approx. 5.7 mH (2.85 mH/section), over the HF and MW portion of the RF spectrum. (that's milliHenries not microHenries!)




Click here for more details on the inside of the RF-1 modem/telephone plug-in filter.
Click here for more info on the RF-1

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RFI Related Links:

American Radio Relay League RFI
Ground Loop Problems
More RFI Links!