04-06-2021, 10:07 AM
Hi,
for many years I was using old CODAN linear 12volt power supplies but the amount of transformer BUZZ from the cores seems to grow over time, either that or I am getting more picky about my quiet surroundings.
A while ago I started using some MANSON 33 amp switchmodes (SPA-8330), which on the whole work very nicely. One thing I had stared to notice was a birdie across all of my receivers when using the WSPR program at around 1400Hz. Long story short, went back to a CODAN linear supply and the birdie went away.
Do any of you have any suggestions on a better option than the MANSON's for the shack 12 volt needs? Had considered the BIG Manson 120A supply but would like opinions, experiences with existing users of it or alternatives.
for many years I was using old CODAN linear 12volt power supplies but the amount of transformer BUZZ from the cores seems to grow over time, either that or I am getting more picky about my quiet surroundings.
A while ago I started using some MANSON 33 amp switchmodes (SPA-8330), which on the whole work very nicely. One thing I had stared to notice was a birdie across all of my receivers when using the WSPR program at around 1400Hz. Long story short, went back to a CODAN linear supply and the birdie went away.
Do any of you have any suggestions on a better option than the MANSON's for the shack 12 volt needs? Had considered the BIG Manson 120A supply but would like opinions, experiences with existing users of it or alternatives.
Peter Sumner, vk5pj
You have enemies? Good. That means you've stood up for something, sometime in your life.
- Winston Churchill
You have enemies? Good. That means you've stood up for something, sometime in your life.
- Winston Churchill