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Depends whether we're talking "bypassing" here, or "filtering". For most of the bypassing I've had to do, disc ceramic capacitors in the range of 0.01 to 0.10 microfarads (at least 50 WVDC) have done just fine. Attach them as close to the offending motor or other component as possible.

Now, if you're trying to filter the incoming DC power, you'd gain a lot more ground by using an inductive-based filter like this: New Page 1. This installs right at the radio, or as close as possible.

Lots of folks have built these in an hour or less and have been very happy with the results.

[QUOTE="Beetle, post: 124385, member: 1066"] Depends whether we're talking "bypassing" here, or "filtering". For most of the bypassing I've had to do, disc ceramic capacitors in the range of 0.01 to 0.10 microfarads (at least 50 WVDC) have done just fine. Attach them as close to the offending motor or other component as possible. Now, if you're trying to filter the incoming DC power, you'd gain a lot more ground by using an inductive-based filter like this: [url=http://n4maa.us/alternator.htm]New Page 1[/url]. This installs right at the radio, or as close as possible. Lots of folks have built these in an hour or less and have been very happy with the results. [/QUOTE]

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