Hello and welcome to my Blog, my name is Chris, a bus driver for First Mendip based in Wells, Somerset. I am Chair and H&S rep for the depot branch of Unite the Union. Married to Fiona, we live in Midsomer Norton near Bath, with Boots the cat. My main hobby is Amateur Radio and I hold the call sign G4KVI. I am the repeater keeper for GB3UB and MB7UB. I have a fascination for the weather and all things to do with nature and science. As a Christian I worship, when shifts allow at St. Nicholas Church in Radstock. These are my observations on my life, both at work and at home.

1 Feb 2023

RF Noisy laptop PSU

 My amateur radio operations has been spoilt by a very noisy PSU. This raised the noise floor by several S points. 

I have tried to fit ferrites to the lead with limited success. I also couldn't find a large enough one for the mains lead. However, I suddenly realised I could strip the outer back and therefore wind several turns on two ferrites. This reduced the noise down to below one S point. 

I must point out this should only be done by someone who understands the risk.



No comments:

Current local weather

Uk Power production