Re: How to find this signal with all its harmonics
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In my opinion, the signal strengt and the way it acts on the band is uncommon for CE signed devices. It should not be there, . . . . . .
If it comes from China, do NOT believe any of the regulatory markings!? China just prints labels and applies them appropriately with absolutely no attention or testing to international RFI/EMC regulatory laws.? Believe me, I was in the business of RFI/EMC until a few years ago.? I've experienced this practice for at least 2 to 3 decades.
Dave - W?LEV
In my opinion, the signal strengt and the way it acts on the band is uncommon for CE signed devices. It should not be there, and it it better to find the source and solve the issue.?
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But is the signal really there? That depends on the quality of the receiver. If it is a RTL-SDR dongle it is very likely that most of it is the result of the dongle beeing overdriven, and producing a lot of internally generated mixing frequencies. e.g. At my home I have to live with a strong repeater, P2000 (*)? and broadcast stations. Plus the occasional air-band when a Liveliner (*) passes overhead. And locally there is hdmi. All of these give me signals on my dongle that are not really there.
So question one is: what receiver is used in owrx? If it is indeed the infamous dongle you might reconsider putting much effort in finding the source. Instead build a band-filter to limit the signals coming in.
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(*) for non-dutch: P2000 is a paging system for emergency services, Lifeliners are MMT choppers.
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regards,
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Henk
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