Questions tagged [fcc]

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

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22 views

Bluetooth and Wifi Maximum Power limt

I saw below Bluetooth chip comparison of many module , most of all are having 8dbm max power , what I know FCC has 30dbm and CE has 20dbm Max power limit so why Bluetooth module are limited to only ...
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25 views

FCC rules for wideband / spread spectrum devices

I'd like to clarify how the FCC measures power in a frequency band (both for intentional and unintentional radiators). There are devices which either frequency hop (output is a sine wave, but center ...
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2answers
50 views

Why are radiated emissions standards for consumer electronics different from industrial?

Why are radiated emissions standards for consumer electronics different from industrial? Source:??
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2answers
66 views

Is EMI/EMC still a big concern for a PC case?

I've recently started looking into researching potential concerns when it comes to using a non-metal material for a custom PC case, specifically wood. I've seen people talk about heat, electrical ...
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3answers
51 views

Are external data connections considered “unintentional radiation” by the FCC?

Does a device with an external communication port of some kind fall under "intentional radiation" or "unintentional radiation" according to the FCC for testing and certification ...
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44 views

Is EMC (FCC and EU) testing performed as sold or as used?

I have a prototype that inserts a fairly weak ISM band RF signal (HF/VHF) as a way of detecting a connection between two metal objects without there being a DC return path (Ideally I would use TDR but ...
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1answer
49 views

Does using an antenna extension cable violate FCC cert?

I have a question about FCC part 15 certs. Using the Particle Cellular B series SoM, they have a "Grant of equipment authorization" to use the module as an end device. Link to the module docs below. ...
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1answer
40 views

CE/FCC/RoHS/etc certification for Intel NUC and other barebone MiniPCs?

Intel sell the Intel NUC without a hard drive or ram. They provide a list of compatible rams and drives. By sliding in the ram stick and drive, am I not invalidating all of the certificates on the ...
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1answer
76 views

Is there any country where the 868 MHz or 915 MHz ISM band cannot be used?

The product I am working on (Electronic Shelf Label) uses the 915 MHz radio frequency band and is currently being deployed in Asia. I am gathering the list of countries that the 915 MHz frequency is ...
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1answer
61 views

Building a UHF RFID Reader, FCC regulations?

I've been working on a project that involves tiny UHF transponders (ex. OMNI-ID Fit 220) that fit into a product with very limited space. We wanted to build our own reader (5 or 6 of them) because it'...
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1answer
37 views

Maximum transmit power allowed for 802.11g

I'm learning about the 802.11 regs. In a book I'm using, "CCNA Wireless 200-355 Official Cert Guide (Certification Guide) 1st Edition by, David Hucaby (Author). Page 53", it has the following clause ...
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1answer
41 views

FCC / CE requirements for adapter pcb?

A product consisting (electronically) just of a PCB with a male USB-C one one side, 5mm of traces and a female USB-C on the other end. No other components at all. To be used as consumer device. How ...
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1answer
61 views

Can the Olimex ESP32-EVB be used in a commercial application?

My friend and I are very near a final product design, but we currently are using an Olimex ESP32-EVB relay module as part of the final system. Recently we were told by a consultant that the FCC could ...
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1answer
30 views

FCC/ETSI conformance with backscatter

Do passive backscatter devices fall under regulations of FCC/ETSI? Suppose a system emits a 4W EIRP tone in the ISM band (conforming to FCC/ETSI regulations). A fully passive device backscatters data ...
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1answer
73 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 ...
4
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1answer
297 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 ...
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2answers
159 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 ...
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1answer
70 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 ...
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2answers
201 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 ...
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45 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 ...
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3answers
280 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 ...
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1answer
50 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 ...
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3answers
146 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. ...
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2answers
99 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 ...
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3answers
135 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 ...
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1answer
112 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 ...
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1answer
138 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
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3answers
301 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
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3answers
362 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 ...
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1answer
148 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/...
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2answers
121 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 ...
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1answer
483 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,...
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1k 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 ...
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3answers
110 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 ...
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1answer
857 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
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2answers
914 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 ...
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1answer
158 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 ...
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1answer
361 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 ...
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1answer
81 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 ...
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0answers
147 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
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1answer
347 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 ...
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2answers
104 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
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6answers
9k 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 ...
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1answer
133 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 ...
3
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1answer
136 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-...
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1answer
518 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 ...
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3answers
809 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 ...
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2answers
1k 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. ...
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1answer
100 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 ...
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1answer
81 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 ...