Message	Date	From	Subject
914	2007-07-30 09:11:54	Artur Angielski	ground loops on thick copper clad
Hi, I have a copper clad which has a copper very thick: at least 300um (standard clads have 32 or 16 um). It may be even 500um (0,5mm) I just do not remember well. Sorry for the metric values :) Anyway - it is more than 10 times thinner than usual. I am thinking about ugly metod of building (using stand offs) for a direct convertion receiver - should I expect the problems with ground loops? I would like to build this way the Roy Lewallen Optimised QRP trx... If I am not wrong - ground loops cause hum, right? Vy 73! Artur sp2qca
915	2007-07-30 12:54:48	Leon	Re: ground loops on thick copper clad
----- Original Message -----

Hi,

I have a copper clad which has a copper very thick: at least
300um (standard clads have 32 or 16 um). It may be even 500um
(0,5mm) I just do not remember well. Sorry for the metric values :)

Anyway - it is more than 10 times thinner than usual.
I am thinking about ugly metod of building (using stand offs)
for a direct convertion receiver - should I expect the problems
with ground loops?
I would like to build this way the Roy Lewallen Optimised QRP trx...

If I am not wrong - ground loops cause hum, right?

Vy 73! Artur sp2qca