Contents
What is the meaning of 800mhz?
The number of the frequency refers to the number of times that an electromagnetic wave repeats in the span of one second. For example, a transmission being sent at 800 MHz means that its wavelength repeats 800,000,000 times per second.
Is 868MHz legal in UK?
Here in the UK we are able to use 433MHz and 868MHz bands. It is very important to bear in mind that every country or region has specific frequencies they can use and its own set of rules when using radio.
What is the difference between 433MHz and 868 MHz?
433MHz frequency band has been widely used in almost many control applications, while 868MHz is exclusively reserved for communication between wireless sensor networks. 868MHz band is exclusively opened for wireless alarm system, it’s less likely to be interfered.
How far can 433mhz transmit?
FS1000A 433 MHz Module Specifications: Transmitter Operating current: 9mA to 40mA. Operating frequency: 433 MHz. Transmission Distance: 3 meters (without antenna) to 100 meters (maximum)
What do you need to know about regulation on RF 868MHz?
The RF 868MHz is a public bandwidth European Low Power Networks (LPWAN) as Sigfox and LoRaWan are using for communicating. This bandwidth is regulated by different norms like ERC-REC-70-3E in Europe and have national norms in relation.
Why is the 869 to 869, 65 zone important?
The 869,4 to 869,65 zone is particularly interesting because you can communicate with 500mW with a 10% duty cycle. An object would ne be able to use a such power when running on battery but in a central network point of view it is a really good channel for downlink communications.
Is the 869, 3 to 869-4 band usable for LPWAN?
The 869,3 to 869,4 sub-band is not usable for LPWAN as the maximum power is 10mW but you have no duty-cycle so it can be a good area for local object communication. The 869,4 to 869,65 zone is particularly interesting because you can communicate with 500mW with a 10% duty cycle.
Is there a maximum number of communications per hour?
As a 12 bytes transmission is 6s we have a maximum of 10 communications per hour. The device is allowed to transmit its 6 communications one after one all over the first 36s of the hour or at any other frequency like one every 10 minutes. The regulation don’t care until you respect the 1 hour global duty-cycle.