The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [fcc]

is the Federal Communications Commission and regulates the RF spectrum, broadband and public safety.

Filter by
Sorted by
Tagged with
2
votes
1answer
64 views

Do I need to recertify a product if I add a DC to DC converter?

I have a product that has been FCC verified as an unintentional radiator, I have fixed a problem with the power that required a DC to DC converter that operates in the 100kHz to 300kHz range (added to ...
3
votes
1answer
96 views

Self Certifying for FCC testing

I have been tasked by my current employer to look into the costs of self certifying. With past companies I have worked for, all of the tests were at a 3rd party lab. The closest thing I have seen to ...
1
vote
2answers
84 views

FCC certified module with uncertified antenna: technical or legal issue?

Say I have a consumer device that uses a pre-certified WiFi module. As I understand it, radio modules are certified with a fixed set of antenna choices that were included as part of the module's ...
0
votes
1answer
52 views

Pi Filter Option

I put a (C-L-C) Pi Filter in series with my antenna trace on a new design, like so: source The reason you put one of these circuits in, as I understand it, is just in case, during compliance ...
0
votes
0answers
24 views

Radio emission: Which bands of a GSM/LTE module to test (FCC)

I am a developer of an IoT-product that is (almost) ready to be introduced to the market. For data communication, we're using the SimCom SIM7000G which provides access to the cellular network in ...
0
votes
2answers
90 views

ESP32 FCC Certification

I want to build an esp32 device using the esp32-pico-d4 chip that I will sell to hobbyists. However, I recently came across something called the FCC. It requires radio devices to get certified which ...
0
votes
0answers
42 views

FCC EIRP test results different than other countries

We have an issue with regulatory testing where our lab reported EIRP varies significantly between separate labs who have tested for FCC and another country. The test methods are quite different. The ...
4
votes
3answers
166 views

Why are “devices utilized exclusively in any transportation vehicle” exempted from FCC compliance testing?

I was researching whether do we need to do FCC compliance testing for a device we developed for a client. Curiously, it seems to be in the list of exemptions (passage taken from here): A digital ...
0
votes
1answer
48 views

Can we install product above FCC test power level declared in certification report

we have a product which has radio of 1W maximum output power , we have sent product for FCC through party lab, and they certified the product with 18 dbm only. So we get the certificate with only 18 ...
0
votes
3answers
111 views

Viable alternative for expensive MLCC capacitor?

I'm thinking of building and selling a product which uses a DC-DC isolator. I've been prototyping with Recom RI3 3W Isolated DC-DC Converter Through Hole, Vin 5 V dc, Vout 9V dc, I/O isolation 1kV. ...
0
votes
2answers
76 views

Simplest option for generating audio tones?

I'm looking for the simplest way to generate audio tones. Something like a square or sine wave, but I want multiple tone options. For example, two quick beeps, one at 440Hz, one at 1Khz. The tones ...
0
votes
0answers
59 views

EN 300 328 Receiver (RX) Blocking | BLE DTM Implementation with Signaling Analyzers?

We are working through a Nordic NRF 52832 certification, and are getting the device CE tested. We are running into some issues getting our device connected to the R&S CMW 500 signaling analyzer ...
0
votes
3answers
104 views

Disable RC oscillator in ATmega328 for FCC compliance

With respect to the topic below, I was trying to find where in the AVR documentation does it say the 8 MHz RC internal oscillator is "disabled" when CKSEL is selected to a different source? I am ...
0
votes
0answers
76 views

How does FCC define “co-located tranmitters”? What testing is needed for a product using multiple approved modules?

I'm planning a design that will use a Raspberry Pi and an XBee PRO 900-HP, both of which are certified modules. I am not an RF engineer and this would need to have the absolute bare minimum of ...
0
votes
0answers
54 views

Power spectral density FCC vs CE 300 328 difference

Both FCC and CE 300 328 has power spectral density test, may be with little difference. We bought 2.4ghz radio which has FCC pass report with 30dbm power and its pass the power spectral density test. ...
0
votes
1answer
82 views

EN 300 328 CE radio certification with power limit

We have developed product for Malesia country, where we need local SIRIM certificate. RF module we used in our product is 2.4Ghz wifi mesh, with max 30dbm (1 watt) output power capacity. To get ...
0
votes
1answer
70 views

Wifi/BT on Realtek 8723 - Is FCC, CE certification needed for Wifi if we disable Wifi and use only Bluetooth?

I'm planning on importing a generic mini pc that comes with an onboard Realtek 8723 for Wifi and Bluetooth. We will need to get it FCC, CE, IC certified before we sell it in North America/EU. Getting ...
3
votes
3answers
183 views

FCC Re-certification if the brand name and outer casing changed?

I'm considering importing Wifi enabled electronics that are FCC and CE certified by the manufacturer in China. We will sell them in US/Europe under our company name (no mention of OEM). Does the FCC ...
3
votes
3answers
279 views

EMC Testing, Radiated Emissions

I recently had one of my new rechargeable Lithium Ion products tested (RE pre-compliance scan) and I had a few frequencies (around 150 MHz) pop (7-10 dBuV/m) above the FCC and CISPR limits. I'm not ...
-5
votes
1answer
144 views

Do the FCC's regulations make any sense?

I have read on the following page that the maximum permissible exposure MPE standard FCC have is 1 mW/cm2 for RF wave above 1500 MHz for general population. http://www.rfcafe.com/references/electrical/...
1
vote
2answers
101 views

Legal to use non FCC-approved radio devices purchased locally?

Does anyone know if it's legal to use non FCC-approved radio devices which are purchased locally? For instance, if the device is purchased from a local eBay seller, is it still legal to use it in any ...
6
votes
1answer
382 views

FCC verification for PCB business card?

FCC regulations apply to unintentional radiator devices, but provide exceptions for subassemblies, including this one: CPU boards, as defined in §15.3(bb), other than those used in personal computers,...
2
votes
0answers
590 views

Do I need to get a device certified by the FCC if it uses the ESP32/8266? [duplicate]

I plan on making a device that the user can control with their phone via a WiFi connection to an ESP8266 or ESP32. If I end up selling this device, will I need to get it certified? The ESP32/8266 has ...
3
votes
3answers
91 views

Compliance Testing Strategies

How do people / companies deal with compliance testing (CE, UL, FCC, etc.) what I would call "platform-oriented and modular" products? The idea being that a family of products might exist, where a ...
1
vote
1answer
653 views

Can you reuse FCC certification from a pre-certified RF chip and antenna for a new product?

I am in the process of designing a board that turns a Gameboy into a Bluetooth controller. Due to size constraints, I would like to use the ESP32-PICO-D4 standalone chip by Espressif instead of one of ...
2
votes
2answers
577 views

FCC Co-Location of antennas

I am looking at creating a device within regulations for a medical environment with two Txing antennas, BLE (cypress FCC certified module) and 915MHz ST Spirit1 FCC certified module. I have found ...
-1
votes
1answer
157 views

I cant seem to figure out FCC or any testing for that matter

this website has a wealth of information and after browsing for quite a while I cant seem to answer my question. I am interested in selling an LED PCB light in the US. It operates on 24v1amp DC ...
4
votes
1answer
261 views

Arduino Cellular Shield EMC Testing for FCC

I have designed an Arduino shield that uses an FCC pre-certified and PTCRB cellular module and I'm wondering about EMC testing and FCC compliance. However, the main concern here is that I am using a ...
1
vote
1answer
78 views

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

Can someone please explain the basics of FCC certification for electronic products, my boss has just dropped this task on me to find a fcc approved dc to dc converter for our product . Does FCC only ...
0
votes
0answers
127 views

Using Pre-Certified (FCC) Emitter - do I need unintentional transmission testing?

I'm making a device - a keyboard - that uses a pre-certified RF module. I host this device on my custom PCB, and have programmed it to receive the keystrokes (from switches on the host PCB) and ...
4
votes
1answer
307 views

FCC Part 15 Class B Declaration of Conformity (DoC)

I'm familiar with Part 15 FCC testing for intentional radiators (3 meter limits of certain power, must be filed with FCC, requires accredited lab), but I'm a little unclear on the Class B ...
0
votes
2answers
99 views

How much interference is allowed to pass FCC verification testing?

I have a small electronic device that I'm considering bringing to market. It doesn't have any features like wifi or bluetooth, so one of the prerequisite steps before I can sell it is to ensure it ...
51
votes
6answers
8k views

Does my Arduino-based device need FCC certification?

I've built a small consumer device that contains an Arduino Nano. It's coupled to a custom daughter board that allows it to pulse a 12V electromagnet at about 1 hertz as well as inteface to some ...
1
vote
1answer
122 views

Measuring Peak Output Power for Frequency Hopping Transmitter (915MHz) for FCC Section 15.247

I've been looking at building a ~900MHz frequency hopping transmitter that conforms to FCC Section 15.247. See section 3.2.1 Frequency Hopping Spread Spectrum Requirements in the Semtech document ...
2
votes
1answer
112 views

Sequencing modes for FCC “Intentional Radiator” test

I'm FCC certifying as an "intentional radiator" a product that uses a custom antenna and off the shelf Broadcom WiFi module. The module has an antenna port, so single-modular and limited single-...
0
votes
1answer
318 views

Why does four Apple Model Numbers (A1457, A1518, A1528 & A1530) have two FCC IDs (BCG‑E2643A & BCG‑E2643B) [closed]

These are model Numbers of iPhone 5S. I want to know why two Model numbers of iPhones have the same FCC ID? I am assuming that as they are two models, they are NOT the same for Apple yet they have the ...
1
vote
3answers
665 views

Is FCC certification needed for receiver device?

Is FCC certification needed for product acting as receiver but having transceiver chip inside? or there should specifically be a receiver only chip inside in order to bypass complicated certification ...
0
votes
2answers
743 views

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

I can see that most of the gadgets that use proprietary protocols use 433MHz, 915MHz, or 2.45GHz, but I don't understand why. 433MHz is highly regulated in the US and 915MHz can not be used in Europe. ...
0
votes
1answer
97 views

ETSI EN 300 220-1 868MHz frequency precision

I'm trying to read the ETSI standard regarding my 868MHz transmitter design. I would like to transmit in one of the channelized bands ex. (868.600 to 868.700), which has a demand on 25KHz channel ...
1
vote
1answer
73 views

Intentional RF emitter failing unintentional emission test?

Suppose a commercial product uses a FCC pre-certified WiFi module. If the quality is not consistent throughout the batch, I'd guess some pre-certified modules may produce unacceptable emissions. In ...
1
vote
1answer
529 views

Is it fine to use 2.4 GHz nRF24l01 modules in commercial products under FCC rules? [closed]

I want to use nRF24l01 modules commercially. But, at the same time, I am aware of some of the FCC rules. I am just curious if someone knows about the regulation and could help me in this. I found this ...
2
votes
0answers
67 views

Is a board with on-board radio disabled an unintentional/intentional radiator?

If a board with the onboard radio (e.g., Bluetooth) chip disabled by software using a jumper, would it be considered to be an intentional or unintentional radiator? That is, the onboard radio can be ...
0
votes
1answer
157 views

Radiation susceptibility test circuit

I am looking to set up a test jig to test radiation susceptibility. This is to do a small in house test to check if my board is susceptible to radiation. The tests frequencies are the standard test ...
6
votes
2answers
388 views

Can I run custom firmware on a pre-certified RF module without needing to redo full FCC certification?

I need BLE connectivity in a product, so to save costs on FCC certification, Bluetooth SIG membership, etc. it will use a pre-certified module for this purpose. Usually such modules work in one or ...
0
votes
2answers
380 views

Do electronic devices like a servo motor need a certification to be sold in the US market?

We want to start a crowd funding project for our IoT servomotor. It comes with an integrated controller and an ethernet connection (no wireless) and now we are not sure about certifications (FCC, RoHS,...
1
vote
2answers
400 views

FCC Requirement for device to device output power variability?

I'm working on a BLE capable device using the Nordic Semiconductor nRF52 SoC, and we're going to have to go through FCC testing. But one thing that I am not clear on, at all, is the tolerance in ...
0
votes
1answer
116 views

FCC approval and quantity

I see that often commercial radio devices go through EMC tests and attain FCC approval. Do all commercial radio devices need to be approved by the FCC though? According to this: The radio frequency ...
5
votes
2answers
1k views

How do I cycle a WiFi transmitter through all modes, for FCC intentional radiator EMC testing?

I'm integrating a WiFi/Bluetooth module into a consumer product, however the module does not have a modular grant, will not have a modular grant, and is anyway getting paired with a unique internal ...
8
votes
2answers
562 views

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

The ATTINY15's was ideal for designing FCC Part 15 exempt battery powered products since its 1.6Mhz internal RC clock ran just below the 1.705Mhz cut-off. The ATTINY2/4/85 replacement parts come with ...
0
votes
1answer
81 views

If I made a commercial product that utilized radio waves, which frequencies could I use?

Let's say, hypothetically, that I design some product that uses radio communication. Maybe something like a wireless lock. Or a scanner that tells you if a tag is near (in range of a few feet). Or a ...