Other Noise Sources - Codan 2110 series Reference Manual

Other regulator wires
These wires are usually suppressed using good low-inductance bypass capacitors. A
Marine Technology type MAR-ACE filter is appropriate. These capacitors must be
connected to the wires that are to be suppressed and to the chassis via very short leads.

Other noise sources

Engine instrumentation
Certain types of oil pressure sensors and voltage regulators used in instrument systems
contain a vibrating or thermal cycling contact. These devices can only be suppressed by
isolating and screening the wiring (see
Disc ceramic capacitors with short leads, protected with insulating sleeving, are often
used. If these capacitors are used, values less than 1 nF should be used to prevent damage
to instrument contacts.
Electric motors
Small electric motors can usually be suppressed with capacitors. Larger motors may
require a better filter as mentioned above.
NOTE
Manpack Transceiver 2110 series Reference Manual
Using the 9350 Automatic Tuning Whip Antenna with a 2110 Manpack Transceiver
Atmospheric and solar noise conditions may be more responsible for poor
signal reception than any locally generated noise.
page 56, Alternator-to-regulator control wire).
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