[Fwd: Re: [TenTec] DSP & COMPUTER NOISE]

[Dr. Gerald N. Johnson, P.E.]

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But lead inductance and thus HF leakage is less with only one capacitor
rather than two in series. This ain't DC you are trying to bypass, its
wide band RF and it takes all the RF tricks neclecting DC paths to
accomplish quieting!

73, Jerry, K0CQ

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Message-ID: <35B33B3B.249A@ames.net>
Date: Mon, 20 Jul 1998 07:42:35 -0500
From: "Dr. Gerald N. Johnson, P.E." <geraldj@ames.net>
Reply-To: geraldj@ames.net
Organization: Gerald N. Johnson, P.E.
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To: k8vt@ameritech.net
Subject: Re: [TenTec] DSP & COMPUTER NOISE
References: <00d701bdb387$43cff160$7aefffcc@n4lq.iglou.com> <35B32A09.E47DBA59@ameritech.net>
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While the green and black wires are shorted together at the main panel,
that's only a DC short and there could easily be RF noise between them
so a capacitor between them in the offending box CAN be of benefit.
There can be up to 100 feet or more of loop to be an antenna or to have
impedance to ground.

If they are tied together at the receptacle that's a violation of the
National Electrical Code and a distinct safety hazard.

73, Jerry, K0CQ


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