EMC Question

[stewc]

Hi All,

I have recently been testing an electronic control for conducted emissions.  It has failed repeatedly at the bottom end of the test spectrum - 150Khz - 200Khz - at various frequencies.

My question is, what is the consequence of this affecting anything in the field? 
Being conducted noise would it interfere with any radio equipment?

Many thanks

 

[audioguru2]

Hi Stew,
I don't know any communications at the very low radio frequency of only 150KHz to 200KHz but maybe ships or submarines use them. Any ships or submarines around your electronic controller?

The governments have set limits for radio emissions from electronic products but I don't know why the regulated frequencies go so low. 

 

[MP1]

Stew,
I guess it depends upon the strength of your signal. You are in the Maritime Mobile and the Aeronautical Radionavigation frequencies. Not a good idea to interfere with these.

MP

 

[ante1]

Subs uses much lower (VLF band) frequencies at 3-30 kHz to communicate digitally sometimes even ELF!