[hpsdr] PicoPSU power supplies

[Kjell Karlsen]

Hi Dan.

I have used both the 150W PicoPsu that only runs from 12V+- 0,5V and the  
125W that runs from 10V-25V and both have surprisingly low spurious  
radiation. When plugged  directly into the Atlas bus, only 2 spurs are  
visible on Mercury on 160 and 80 Meter. The level is < 1uV.

If I try to measure the spurs using a 2 turn loop around 1 inch from the  
PSU, I can see some more spurs but they are very weak. Compared to what I  
measure from a high quality CORSAIR ATX 650W PSU they are much better. The  
650W has high level of spurs on VHF 145MHz and even higher.

73, Kjell






På Sat, 04 Feb 2012 22:01:36 +0100, skrev Dan Babcock <n4xwe at yahoo.com>:

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