Home › Forums › temp › VHF FM hash from a switching power supply.. Arrrrgggggh. › Not a cheapie
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My switcher is made by Lambda which is a long recognized mfg. of power supplies. The Lambda linears I have used over the years have been flawless.
This one was intended to be mounted in an industrial control cabinet as a component and as I mentioned does not have a FCC label probably because it is an OEM component, though I would expect that such devices would be subject to part 15 rules anyway.
The other switcher I sometimes use for AM is just fine. It is as 13.8V, 3A unit and is a “semi wall wart” in that it is in a pod in the cord. It does have the FCC part 15 sticker and reg. number so apparently it was tested and passed.
My 2 meter transceiver requires 13.8V at 7A which makes for a fairly large linear supply, but since I have the homebrew unit ready to go this is not going to be a problem here. For part 15 AM I use the SSTRAN supplied wall wart, and for FM I use the Ramsey supplied wall wart. Both work fine.
Regarding the FCC cites for retailers of “improperly labelled” TVs, this appears to be a real cash cow since the fines are substantial.