How clean is the output of the mains PSU?

73
John F5VLF

*********** REPLY SEPARATOR  ***********

On 10/09/2008 at 21:10 Scott Tilley wrote:

>Hi All
>
>Been awhile since I've posted to the reflector.  I'm pleased to announce 
>I have escaped the noisy clutches of the City and bought myself a nice 
>piece of land up the coast in a very quiet spot.
>
>Presently I'm only using my passive RX loop which has a single turn 
>'sense' loop for coupling into the main multi turn loop...  When the RX 
>is connected to an AC power power supply I get terrible AC growlers; 
>however, put the RX on a battery and bang not a peep of nasty AC noise.
>
>I presume this is due to some coupling between the AC mains and the RX 
>system and my isolation transformer doesn't seem to help so I wonder if 
>someone could set me straight on what is going on here so I can solve 
>the problem.
>
>Thanks for any support!
>
>73 Scott
>VE7TIL