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View Full Version : Clone 12V Power suppy causes massive RFI on all HF bands



ssjenkins
21-12-2009, 01:48 PM
Hi All ,

This is really for people who have any radio (ham , cb) equipment in their house . The 12V mains adaptor supplied with the DM800HD clone (mines anyway) causes massive radio frequency interference (RFI) through all of the HF bands (0-30Mhz) . It may cause problems on other bands as well . My PSU was approvimately 5m away from my antenna and I had 20+ QRN on all bands . Took me 2 days to find out what the problem was .

I've posted a video here :

_http://www.youtube.com/watch?v=80Kn8nleFpc

I'm going to try screening it or just change it altogether .

Sammy

echelon
21-12-2009, 02:22 PM
a pc psu works just fine as a power source for the dm800 :)

ssjenkins
21-12-2009, 02:52 PM
Thanks Echelon . I got another 12V 5A one locally for €10 . I had a 15V one but the specs say 12V +/- 15% and I didn't want to risk it .

Sammy