Radio suppression

[thebigdogsix]

Hi
Ive been reading the msva manual (its my nightly book of choice at the moment) and was wondering what radio suppression actually is

[Manky Monkey]

Stops your ignition circuit interfering with other people's radio reception.
If the Government charges companies for radio licences, they have to give some guarantee the frequency will be useable. So the rest of us must shield our sparky bits with spark plug leads & plugs that are radio suppressed. 

[thebigdogsix]

Oh i see
so how do i know if my leads are ok
is my trike going to be ok as the engine was a "volume production"

Radio Suppression
June 2010 17/1
17
Application
All vehicles fitted with a spark ignition engine.
Note. Volume production vehicles can be assumed to meet this requirement unless evidence suggests otherwise.
Requirements and Procedures
1. Visually check the HT ignition system is fitted with radio interference suppression.
Reasons for Failure
1. The HT ignition system is not fitted with radio interference suppression equipment

[Manky Monkey]

For my truck project, the SVA requires the leads to be marked "radio suppressed".

[Galaxie500]

Stops your ignition circuit interfering with other people's radio reception.
If the Government charges companies for radio licences, they have to give some guarantee the frequency will be useable. So the rest of us must shield our sparky bits with spark plug leads & plugs that are radio suppressed. 

It also stops interference with any other electronics on or near your vehicle. All electronics must meet standards to stop them all interferring with each other.