In a message dated 2006/11/04, tchannel@.............. writes:

> This is a general question which only quiet times would allow for. During 
> the day time hours I receive a spike about once an hour to several times an 
> hour. No pattern. They all have something's in common. They are short in 
> duration less than one minute. Things are quiet and then another hit.
> Sometimes these hits cover ten mins, on and off. I live in the city, next to 
> the mountains, no blasting or construction that I know of.
>   
> I don't think they are weather, They don't repeat at the same time each day. 
> They are short but strong.  Kind of like someone is dropping a large weight. 
>  Sometime three or four of different shape, in a row.
>  
> Any ideas as to their origin? 

Hi Ted,

       I suggest that you use a battery portable radio. Tune in to the long 
wave end of the MW AM band, but in between stations. Then listen for any RFI 
signals which correspond to the pulse noise? Can you use the directional aerial 
properties to ~locate the signal?

       How about your fridges / central heating system? Is anyone doing any 
electric welding / construction locally? Do the signals only occur during 
'working' hours?  

       Regards,

       Chris Chapman
In a me=
ssage dated 2006/11/04, tchannel@.............. writes:



This is a general question whic=
h only quiet times would allow for. During the day time hours I receive a sp=
ike about once an hour to several times an hour. No pattern. They all have s=
omething's in common. They are short in duration less than one minute. Thing=
s are quiet and then another hit.

Sometimes these hits cover ten mins, on and off. I live in the city, next t=
o the mountains, no blasting or construction that I know of.

  

I don't think they are weather, They don't repeat at the same time each day=
.. They are short but strong.  Kind of like someone is dropping a large=20=
weight.  Sometime three or four of different shape, in a row.

 

Any ideas as to their origin? 




Hi Ted,



       I suggest that you use a battery portab=
le radio. Tune in to the long wave end of the MW AM band, but in between sta=
tions. Then listen for any RFI signals which correspond to the pulse noise?=20=
Can you use the directional aerial properties to ~locate the signal?



       How about your fridges / central heatin=
g system? Is anyone doing any electric welding / construction locally? Do th=
e signals only occur during 'working' hours?  



       Regards,



       Chris Chapman