.1 audio bypasses???? heheheheh there are a number of people I wish I
could convince to use .1 bypasses on ALL audio leads.....hi hi hi
Maybe 200pf?
Walt
On 8 Apr 1999 14:41:24 -0500 rohre <rohre@arlut.utexas.edu> wrote:
>
> Check for missing/bad RF by pass caps on the audio leads to the mike, and
> maybe on the push to talk leads. Place these right at the connector inside
> the radio, and use 0.1 mf disc ceramics as a start. Might try some ferrite
> beads there as well.
>
> In some TT production runs slight rearrangement of wiring could lead to hyper
> sensitivity to RF, if other conditions of bypassing are not optimum. I
> presume you have rig bonded with braid or copper strap to a common point for
> other equipment cases, and the ground side of the antenna feed, but are you
> feeding coax in the shack or ladder line? Check all coax jumper shields, I
> have had those break inside coax connectors and play havoc like you describe
> on my Scout.
> (RF in audio). Sometimes, a design uses a lower cost cap, and if it was say a
> 0.01 mf disc, then there should be added a 0.1 mf in parallel with it to
> common, with zero lead length if possible. How far is your antenna from your
> rig? Are you on an upper floor of the house, or at ground level with the
> shack?
>
> Hope these points help,
>
> Stuart K5KVH
>
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