Radio frequency certification

1. What are wireless products?
Wireless product is translated into English as: Wireless Product
Generally speaking, Wireless refers to "radio" or "radio waves".
Then wireless products (Wireless Products) can be understood as products that per behaviors (or work) such as contact, communication, control through "radio" or "radio waves".
Wireless products can be divided into wireless transmitters (Transmitter) wireless receivers (Receiver) according to their functions.
Transmitter is generally referred to as Tx in the wireless field;
Receiver is generally referred to as Rx in the wireless field.
In actual use, the two are integrated into each other one is indispensable.

Note: Sometimes, wireless receivers also produce emissions, which we call products that work in duplex mode.

 
2. Why is wireless product certification required?
Theoretically: the radio frequency is infinite (0 ~ ∞Hz); in actual use: the frequencies of general civilian products are concentrated (0 ~ 40GHz).
So how to manage the commonly used limited frequencies? This requires dividing our frequencies into various use areas, ranges, emission sizes, etc.

In addition, for national security reasons, many countries in the 0 ~ 40GHz range are not open to civilian products. We must avoid using or inadvertently occupying these frequencies, which may cause various unnecessary consequences. Various considerations require us to conduct various tests on wireless products obtain certifications from corresponding countries.

 
3. R&TTE (Radio Telecommunications Terminal Equipment Directive), Radio Telecommunications Terminal Equipment Directive.
Wireless remote control products communication products exported to the EU must comply with the requirements of the R&TTE Directive (Radio Communications Terminal Directive)-1999/5/EC.
  (1) Products covered by the R&TTE directive include:

     1. Short-distance wireless remote control products (SRD) For example: remote control toy cars, remote control alarm systems, remote control doorbells, remote control switches, remote control mice, keyboards, etc.
     2. Professional radio remote control products (PMR) such as: professional wireless walkie-talkies, wireless microphones, etc. Corded telephone, fax, MODEM, answering machine, small switchboard (PABX), cordless telephone CTO, CT1, CT1+..., ISDN (digital telephone product), DECT (enhanced digital cordless telephone), GSM, CDMA...
     3. Bluetooth products such as: Bluetooth headsets.
     4. The R&TTE application process has certain differences according to the frequency b of the product. For low-frequency wireless products, we usually refer to 27MHZ, 49MHZ, 40MHZ, 433MHZ, 315MHZ, 88-108MHZ, 35MHZ, 72MHZ these Frequencies are used differently in various regions countries.

  (2) Frequency bs available in the United States
27MHZ, 49MHZ, 40MHZ, 433MHZ, 315MHZ, 88-108MHZ, 72MHZ
Frequency bs available in Europe: 27MHZ, 40MHZ, 35MHZ, 433MHZ
For such simple wireless products, we usually encounter the need to apply for FCC, R&TTE, etc. The following is the FCC
  (3) A brief explanation of the R&TTE application process:
1) The customer provides complete test samples with accessories submits them to the laboratory;
2) Customers need to provide complete technical ination (circuit diagram, PCB board diagram, BOM, product manual, circuit deion, technical perance deion), this ination must be in electronic in English;
3) Tested by the laboratory issued a test report;
4) Laboratory audit data reports;
5) The laboratory submits the test report technical data to TCB, FCC or NotifyBody for review;
6) TCB, FCC or NotifyBody issues a certificate;
7) The application was successful.