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To your specific question: no, I don't think a transistor radio would require certification unless it was somehow RF emissive. On a broader level, making thing
by culturestate 9y ago
To your specific question: no, I don't think a transistor radio would require certification unless it was somehow RF emissive.
On a broader level, making things without the FCC is fine unless you start disrupting communications networks; selling them is a different issue. In reality, all of this testing and certification is done by independent laboratories and the FCC mostly just makes sure the compliance paperwork is in order.
- metaphor 9y ago> To your specific question: no, I don't think a transistor radio would require certification unless it was somehow RF emissive. How would you know your device wasn't RF emissive if it was never tested? By design, sure, but that doesn't account for radiated spurious emissions.
- makomk 9y agoDepending on the exact architecture used, it's surprisingly easy to accidentally leak your first IF oscillator out the antenna port and broadcast it to everyone in the area. The FCC seems to be relatively lenient about FM radio receivers in general though and let manufacturers self-certify their compliance with the rules without any independent testing.