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44 votes
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Does my Arduino-based device need FCC certification?

You are confusing certification and emissions requirements. Only intentional radiators need to be certified. From your description, your device is not a intentional radiator. However, you are still ...
Olin Lathrop's user avatar
12 votes

Workaround for the obsolete ATTINY15 1.5Mhz clock for FCC exemption?

The RC oscillator of the ATtiny26L can be programmed to run at 1.0, 2.0, 4.0, or 8.0MHz directly without running through a prescaler. Its PLL will still perform a 64x though, so make sure it is ...
Ignacio Vazquez-Abrams's user avatar
11 votes
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Impact on FCC certification due to replacement of GPS receiver module

For FCC it comes down to whether you can make a compelling engineering argument that there should be no change in system behaviour, and whether you are willing to take the financial/reputational risk. ...
colintd's user avatar
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9 votes
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FCC Certification?

The only way I know to avoid the full FCC certification is to get a module that has an antenna already attached, whether an antenna connector, chip antenna or PCB trace. For example this Bluetooth ...
tcrosley's user avatar
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8 votes
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FCC regulations for induction furnace

The FCC does regulate induction heaters. The regulations mainly are concerned with interference with other users in the frequency spectrum. The main intent of an induction heater is to produce a ...
Marla's user avatar
  • 5,240
5 votes
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Are RF shields necessary?

In the United States the FCC (Federal Communications Commission) Part 15 regulates unlicensed transmissions. It doesn't matter whether you are using a "module", it is the unlicensed use of any ...
Marla's user avatar
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5 votes
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FCC part 15 "must accept interference from other sources": what does this mean?

"Interference" in this context applies to one, radiated RF signal affecting the reception of another radiated RF signal. The interference is not produced within the interfering transmit ...
Richard Fry's user avatar
5 votes

What unlicensed frequencies can (or should) be used for proprietary wireless communication?

Why is that noone uses other frequencies? The radio spectrum is crammed full of users, some licensed, some military and there are a few spaces left over that unlicensed users are permitted to use. ...
Andy aka's user avatar
  • 453k
5 votes

FCC Co-Location of antennas

Modules are typically certified with the assumption that they are the only intentionally radiating device. Some module datasheets will make this known with statements like: This transmitter must ...
rrpilot's user avatar
  • 151
4 votes

FCC Low Oscilation

No - the FCC restricts devices operating above 9 kHz: http://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet62/oet62rev.pdf
jp314's user avatar
  • 18.8k
4 votes

FCC, ROHS and CE certification and compliance

I can answer part of this. RoHS is self-declared; get the RoHS compliance statements from all your component manufacturers, keep them on file in case someone challenges you, and you can declare your ...
Stephen Collings's user avatar
4 votes

Why 1.705 MHz and FCC

Here's a pretty chart of all the radio spectrum allocations in the USA: https://www.nasa.gov/sites/default/files/spectrum_wall_chart_aug2011.jpg They've been built up over many years in a fairly ad-...
patstew's user avatar
  • 191
4 votes
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FCC approval and quantity

No, you're not reading it right. The exception is for less than 4000 units, not for resale and only for "testing and evaluation to determine compliance with the FCC Rules and Regulations, product ...
Andrew's user avatar
  • 6,912
4 votes

Does my Arduino-based device need FCC certification?

You will require an emissions certification for your product. The certification process would include your complete product in it's enclosure and would have to be tested with any normal accessories ...
Michael Karas's user avatar
4 votes

Does my Arduino-based device need FCC certification?

You'll want to look at this answer that talks about when testing is compulsory: https://electronics.stackexchange.com/a/16938/39344 You have an "unintentional radiator" regulated under Part 15, ...
Bryce's user avatar
  • 869
4 votes
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FCC Re-certification if the brand name and outer casing changed?

FCC testing usually includes rf testing of the unit in the case, unless it is a certified modular device. Changing the case will likely require retesting, and certification. Keep in mind that even ...
Passerby's user avatar
  • 73k
4 votes
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Pi Filter Option

DNP the capacitors and populate a 0-ohm resistor in place of the inductor? This is the easiest and most obvious one to do DNP the capacitors and populate a 100-ohm resistor in place of the ...
Neil_UK's user avatar
  • 165k
4 votes

If all parts in a product are FCC or CE certified then do i still need to apply for certification for the complete product?

CE marking is an administrative marking that indicates conformity with health, safety, and environmental protection standards for products sold within the European Economic Area. The CE mark is ...
vu2nan's user avatar
  • 18k
4 votes

Is a system powered by an FCC-compliant power supply FCC-compliant if the rest of the system doesn't require compliance?

[Bypassing the question whether or not you actually need compliance, and what kind of compliance do you need.] A system isn't automatically compliant if it uses a compliant (FCC, IEC, CE) power supply....
Nick Alexeev's user avatar
  • 38.1k
3 votes
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FCC, ROHS and CE certification and compliance

FCC part: Since your device doesn't have any RF components, it's classified as "unintentional radiator" under FCC rules. Hence, you're not required to have an FCC certificate if you want to sell it. ...
Dmitry Grigoryev's user avatar
3 votes

FCC-approval and "modular" integration

Assuming (1) that the USB dongle itself is approved as a computer peripheral and (2) the dongle has not been modified, then I believe the dongle is considered a separate and independent product (non-...
bigjosh's user avatar
  • 10.1k
3 votes
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FCC Low Oscilation

If the external crystal source is selected, the internal oscillator is disabled. So if you use a 1MHz external crystal, then yes, nothing in the AVR will be operating above 1MHz. The AVR in its ...
Tom Carpenter's user avatar
3 votes
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FCC's allowable margin of error

What discrepancy? Nothing they show in the table and then in the graph is is in disagreement. The table is of maximum allowable spectral power densities at each center frequency. That means that for ...
metacollin's user avatar
  • 28.4k
3 votes

FCC Requirement for device to device output power variability?

As far I know, FCC only limits the maximal EIRP power (mean value in all directions, measured @3meters). So no problem to be +/-1dBm under condition that the most powerfull device stays under limit (...
Julien's user avatar
  • 206
3 votes
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Can I run custom firmware on a pre-certified RF module without needing to redo full FCC certification?

It has been my experience that you would have to re-certify if you are replacing the firmware in the module. Be aware that despite the pre-certified nature of certain modules that ultimately you or ...
Michael Karas's user avatar
3 votes

Designing an electronic product for the american market, need to find a DC to DC converter with FCC certification

In round numbers, FCC cert applies to the finished product. Although many switching power supplies come with FCC cert to Class A or B, this does not guarantee that a finished product will meet the ...
AnalogKid's user avatar
  • 19.7k
3 votes

Compliance Testing Strategies

You're definitely on the right track with: I tested the product in these configurations, and they represent a superset of all possible configurations, and they all met the regulatory standards; ...
Jim's user avatar
  • 1,647
3 votes
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Do the FCC's regulations make any sense?

Ok, if I have a 100W transmitter (for example), feeding an isotropic radiator (a theoretical construct that radiates equal power in all directions, in practise you need to take antenna pattern into ...
Dan Mills's user avatar
  • 17.5k

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