Re: Looking for UK source of low noise 5V DC supply


I have a clean 30 Amp 12 v shack psu but found that even short leads from it to bias tees, etc, were picking up rfi from nasty switch-mode PSUs in the house and shack.

I soldered small Belling-Lee filters at the point these leads enter the bias tees, amps, and other rf sensitive equipment and rfi has been cleaned up enormously.

Photo on my QRZ blog here:

How they would cope with much stronger rfi on the power leads from a dodgy 5 v switch mode PSU, I don't know..... but it's worth a try.
73 Jeff

Join to automatically receive all group messages.