LPD433
LPD433
LPD433 (Low Power Device 433 MHz) is a part of ITU region 1 ISM band which allows for licence free communication devices, using frequencies in the UHF band from 433.075 MHz to 434.775 MHz.
LPD hand-held radios are authorized for license-free voice communications use in most of Europe using analog frequency modulation (FM) as part of Short range device regulations, with 25 kHz channel spacing, for a total of 69 channels. LPD devices must only be used with the integral and non-removable antenna with a maximum legal power output of 10 mW.
Voice communication in LPD band was introduced to reduce the burden on the eight PMR446 channels over shorter ranges (less than 1 km). In some EU countries voice is not allowed over LPD.
LPD is also used by wireless instruments and digital devices such as car keylocks.
LPD433 (Low Power Device 433 MHz) is a part of ITU region 1 ISM band which allows for licence free communication devices, using frequencies in the UHF band from 433.075 MHz to 434.775 MHz.
LPD hand-held radios are authorized for license-free voice communications use in most of Europe using analog frequency modulation (FM) as part of Short range device regulations, with 25 kHz channel spacing, for a total of 69 channels. LPD devices must only be used with the integral and non-removable antenna with a maximum legal power output of 10 mW.
Voice communication in LPD band was introduced to reduce the burden on the eight PMR446 channels over shorter ranges (less than 1 km). In some EU countries voice is not allowed over LPD.
LPD is also used by wireless instruments and digital devices such as car keylocks.
CHANNELS
CH1 - 433.075
CH2 - 433.100 CH3 - 433.125 CH4 - 433.150 CH5 - 433.175 CH6 - 433.200 CH7 - 433.225 CH8 - 433.250 CH9 - 433.275 CH10 - 433.300 CH11 - 433.325 CH12 - 433.350 CH13 - 433.375 CH14 - 433.400 CH15 - 433.425 CH16 - 433.450 CH17 - 433.475 CH18 - 433.500 CH19 - 433.525 CH20 - 433.550 CH21 - 433.575 CH22 - 433.600 CH23 - 433.625 CH24 - 433.650 CH25 - 433.675 CH26 - 433.700 CH27 - 433.725 CH28 - 433.750 CH29 - 433.775 CH30 - 433.800 CH31 - 433.825 CH32 - 433.850 CH33 - 433.875 CH34 - 433.900 CH35 - 433.925 |
CH36 - 433.950
CH37 - 433.975 CH38 - 434.000 CH39 - 434.025 CH40 - 434.050 CH41 - 434.075 CH42 - 434.100 CH43 - 434.125 CH44 - 434.150 CH45 - 434.175 CH46 - 434.200 CH47 - 434.225 CH48 - 434.250 CH49 - 434.275 CH50 - 434.300 CH51 - 434.325 CH52 - 434.350 CH53 - 434.375 CH54 - 434.400 CH55 - 434.425 CH56 - 434.450 CH57 - 434.475 CH58 - 434.500 CH59 - 434.525 CH60 - 434.550 CH61 - 434.575 CH62 - 434.600 CH63 - 434.625 CH64 - 434.650 CH65 - 434.675 CH66 - 434.700 CH67 - 434.725 CH68 - 434.750 CH69 - 434.775 |
USAGE BY COUNTRY
U.K.
In the UK, LPD433 equipment that is type-approved can be used for model control, analogue/digitised voice and remote keyless entry systems. Channels 1 to 14 are UK Amateur repeater outputs and channels 62 to 69 are UK Amateur repeater inputs. This band is shared on a secondary basis for both licensed and licence exempt users, the primary user being the Ministry of Defence.
Ofcom, together with the R.S.G.B. Emerging Technology Co-ordination Committee have produced guidelines to help mitigate the side effects of interference to an extent.
Other European countries
European Remote keyless entry systems often use the 433 MHz band.
I.T.U. Region 2
In ITU region 2 (the Americas), the frequencies that LPD433 uses are within a band allocated to amateur radio. In the United States LPD433 radios can only be used under FCC amateur regulations by properly licenced amateur radio operators. The conflicting allocations have been something of a nuisance to US amateur operators due to use of the equipment by European tourists in the U.S.
U.K.
In the UK, LPD433 equipment that is type-approved can be used for model control, analogue/digitised voice and remote keyless entry systems. Channels 1 to 14 are UK Amateur repeater outputs and channels 62 to 69 are UK Amateur repeater inputs. This band is shared on a secondary basis for both licensed and licence exempt users, the primary user being the Ministry of Defence.
Ofcom, together with the R.S.G.B. Emerging Technology Co-ordination Committee have produced guidelines to help mitigate the side effects of interference to an extent.
Other European countries
European Remote keyless entry systems often use the 433 MHz band.
I.T.U. Region 2
In ITU region 2 (the Americas), the frequencies that LPD433 uses are within a band allocated to amateur radio. In the United States LPD433 radios can only be used under FCC amateur regulations by properly licenced amateur radio operators. The conflicting allocations have been something of a nuisance to US amateur operators due to use of the equipment by European tourists in the U.S.
There are a few LPD433 radios for sale which also have PMR446 channels with them the Intek MT5050 is one of them available for sale. More about this radio can be found here