LF: Re: Re: Passive high-pass filter circuits?

["J. B. Weazle McCreath" <weazle@hurontel.on.ca>]

Hi Alan,

If the roll off was such that the strength was around 6 dB down
at 250 Hz. it would satisfy my requirements.  What I'm after is
reducing mains hum and its first few harmonics to a level where
they are below the strength of the desired signals, which fall in
the range of 1 to 4.5 kHz.

73, J.B., VE3EAR - VE3WZL
Solar and wind powered
Lowfer " EAR"  188.830
EN93dr

http://www.hurontel.on.ca/~weazle