Re: [Titanaircraft] Re: Radio static from Rudder Pedal movement.

Based on this posting it sounds as if the problem is poor grounding. If
the ground side of the battery is connected to the fuselage, return
current will flow throughout the fuselage structure, and any place where
the connectivity is poor can create a small voltage drop, which will
give rise to static noise. A possible remedy for this is to make sure
that all parts of the fuselage are bonded together very well, and the
actual ground path back to the battery from all electrical devices is
kept as short as possible.

David

ls78705 wrote:
>
>
>
>
> --- In Titanaircraft@yahoogroups.com
> <mailto:Titanaircraft%40yahoogroups.com>, "Todd" <djtoddb@...> wrote:
> >
> > This is odd and annoying...
> > It appears that i get a ton of static in my ICOM A22 when the rudder
> pedals are moved. More specifically, it appears that the Brake cables
> and rudder cables intermittently "break" ground during their travel
> and cause the static through the radio in the headset(no engine
> running). If I clip a 1' test lead on the rudder cable with the other
> end unconnected under the seat (acts like an antenna) and then run
> another test lead over another part of the cable, it causes the radio
> to crackle.
> > Has anyone had any problems with this or know how to fix it? The
> radio is unaffected if I use the "rubber duckie" antenna placed right
> on the radio but if I use the AC antenna on the belly, that's when the
> "static" is picked up.
> >
>
> I have practically the identical problem, tho in my case it's coming
> from the nosewheel assembly. I get a very strong static on the takeoff
> roll until I lift the nosewheel up (also on rollout after landing when
> I set down the nosewheel).
>
> I assume it's just the metal-metal contact in the assembly generating
> RF when it vibrates together. It's only really bad on the t/o roll so
> I just ignore it or turn down the radio before I put the coals to it
> and turn it back up once I'm off.
>
> I do need to give it a good greasing tho which should help.
>
> It only happens when rolling fast on the nosewheel, so I doubt it's
> metal-metal anywhere else...
>
> LS
>
>

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