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. 2.0 mH (1.00 mH/section)(that's milliHenries not microHenries!), over the HF and MW portion of the RF spectrum.
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
RFI Related Links:
American Radio Relay League RFI
Ground Loop Problems
More RFI Links!
