LPD433 - Revision history

R4002 at 15:02, 3 July 2025

2025-07-03T15:02:43Z

← Older revision		Revision as of 15:02, 3 July 2025
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	LPD433 - Low Power Device 433 MHz band. Overlaps with the 70cm [[Amateur_radio#Amateur_Radio_Bands_VHF_UHF_and_up\|UHF amateur radio allocation]] (in some areas). Sometimes called SRD433 for '''[[SRD\|Short Range Device]]''' 433 MHz band. Very low power short range 10mW 10milliwatts power limit.		LPD433 - Low Power Device 433 MHz band. Overlaps with the 70cm [[Amateur_radio#Amateur_Radio_Bands_VHF_UHF_and_up\|UHF amateur radio allocation]] (in some areas). Sometimes called SRD433 for '''[[SRD\|Short Range Device]]''' 433 MHz band. Very low power short range 10mW 10milliwatts power limit.

-	ITU Region 1 license free unlicensed service 433.05 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.	+	ITU Region 1 license free unlicensed service 433.04 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.

	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.		Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.

R4002: /* Standardization / Harmonization */

2025-06-16T14:28:55Z

Standardization / Harmonization

← Older revision		Revision as of 14:28, 16 June 2025
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	Some handheld walkie talkies sold in Europe include both the original 8 [[PMR446]] channels plus the 69 LPD433 channels for a total of 77 channels, despite the significantly reduced range on the LPD433 channels (10 milliwatts power on 433 MHz vs. 500 milliwatts on 446 MHz). However, these LPD433 + PMR446 dual service radios quickly dropped out of popularity once PMR446’s analog channels increased from 8 to 16, and digital PMR446 (DPMR446) capability for improved weak signal performance and as well as channel sharing / selective calling - CTCSS and DCS on analog, and various selective calling (group call, individual call, etc.) that 500mW digital PMR446 offers in addition to the capabilities offered by 16 channel analog/digital or 32 channel digital only PMR446/dPMR446 devices.		Some handheld walkie talkies sold in Europe include both the original 8 [[PMR446]] channels plus the 69 LPD433 channels for a total of 77 channels, despite the significantly reduced range on the LPD433 channels (10 milliwatts power on 433 MHz vs. 500 milliwatts on 446 MHz). However, these LPD433 + PMR446 dual service radios quickly dropped out of popularity once PMR446’s analog channels increased from 8 to 16, and digital PMR446 (DPMR446) capability for improved weak signal performance and as well as channel sharing / selective calling - CTCSS and DCS on analog, and various selective calling (group call, individual call, etc.) that 500mW digital PMR446 offers in addition to the capabilities offered by 16 channel analog/digital or 32 channel digital only PMR446/dPMR446 devices.

-	Like other license free personal radio services, the LPD433 service 433MHz is used as another no license required unlicensed two way radio service, except at much higher power. In places like Russia, high power is common on these frequencies, as is using the frequencies above 434.775 MHz and below 433.050 MHz. In [[CB#Russian_CB_Channel_Frequencies\|Russia]] and the former Soviet Union / C.I.S. countries, the 433 band is also commonly used for cross-band [[CB#~~CB_Repeater_Listing~~\|CB ~~radio~~ repeater~~]] [[CB#CB_Repeater_Networks_Crossband_Link_to_VHF.2FUHF_Systems_and_Internet_Serviceslinks~~]], both to the VHF band and the 11 meter CB radio [[CB#Russian_CB_Channel_Frequencies\|band]].	+	Like other license free personal radio services, the LPD433 service 433MHz is used as another no license required unlicensed two way radio service, except at much higher power. In places like Russia, high power is common on these frequencies, as is using the frequencies above 434.775 MHz and below 433.050 MHz.
		+
		+	In [[CB#Russian_CB_Channel_Frequencies\|Russia]] and the former Soviet Union / C.I.S. countries, the 433 band and [[PMR446]] 446 MHz channels are also commonly used for cross-band [[CB#CB_Repeater_Networks_Crossband_Link_to_VHF.2FUHF_Systems_and_Internet_Services\|CB repeater links]], both to the VHF band and the 11 meter CB radio [[CB#Russian_CB_Channel_Frequencies\|band]].

	Examples include documented use of Baofeng UV-5R, UV-82, UV-82HP, BF-9700, [[Business_Radio#Default_Motorola_Kenwood_Vertex_TYT_Baofeng_Pofung_BTECH_Hytera_Retevis_Blackbox_Radios_Factory_Out_Of_The_Box_Channels_Frequencies_Settings\|BF-888S type / H-777 type handheld radios on 431 MHz, 435.050 MHz, 433.000 MHz, and so on]] by Russian military as short range tactical radios.		Examples include documented use of Baofeng UV-5R, UV-82, UV-82HP, BF-9700, [[Business_Radio#Default_Motorola_Kenwood_Vertex_TYT_Baofeng_Pofung_BTECH_Hytera_Retevis_Blackbox_Radios_Factory_Out_Of_The_Box_Channels_Frequencies_Settings\|BF-888S type / H-777 type handheld radios on 431 MHz, 435.050 MHz, 433.000 MHz, and so on]] by Russian military as short range tactical radios.

R4002 at 16:27, 10 February 2025

2025-02-10T16:27:16Z

← Older revision		Revision as of 16:27, 10 February 2025
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	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.		Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.

-	~~Summer will be over~~	+

	== Channel List Frequency Chart==		== Channel List Frequency Chart==

R4002 at 16:27, 10 February 2025

2025-02-10T16:27:12Z

← Older revision		Revision as of 16:27, 10 February 2025
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	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.		Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.

-	Summer will be over ~~soon~~	+	Summer will be over

	== Channel List Frequency Chart==		== Channel List Frequency Chart==

R4002 at 16:27, 10 February 2025

2025-02-10T16:27:06Z

← Older revision		Revision as of 16:27, 10 February 2025
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	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.		Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.
		+
		+	Summer will be over soon

	== Channel List Frequency Chart==		== Channel List Frequency Chart==

R4002 at 16:26, 10 February 2025

2025-02-10T16:26:49Z

← Older revision		Revision as of 16:26, 10 February 2025
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	LPD433 433 MHz 434 MHz FM voice (and data) channels.		LPD433 433 MHz 434 MHz FM voice (and data) channels.

-	*Channel 1 - 433.050 MHz	+	*Channel 01 - 433.050 MHz
-	*Channel 2 - 433.075 MHz	+	*Channel 02 - 433.075 MHz
-	*Channel 3 - 433.100 MHz	+	*Channel 03 - 433.100 MHz
-	*Channel 4 - 433.125 MHz	+	*Channel 04 - 433.125 MHz
-	*Channel 5 - 433.150 MHz	+	*Channel 05 - 433.150 MHz
-	*Channel 6 - 433.175 MHz	+	*Channel 06 - 433.175 MHz
-	*Channel 7 - 433.200 MHz	+	*Channel 07 - 433.200 MHz
-	*Channel 8 - 433.225 MHz	+	*Channel 08 - 433.225 MHz
-	*Channel 9 - 433.250 MHz	+	*Channel 09 - 433.250 MHz
	*Channel 10 - 433.275 MHz		*Channel 10 - 433.275 MHz
	*Channel 11 - 433.300 MHz		*Channel 11 - 433.300 MHz

R4002: /* Channel List Frequency Chart */

2025-02-05T16:40:48Z

Channel List Frequency Chart

← Older revision		Revision as of 16:40, 5 February 2025
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	== Channel List Frequency Chart==		== Channel List Frequency Chart==

-	LPD433 433 MHz 434 MHz FM voice (and data) channels. a	+	LPD433 433 MHz 434 MHz FM voice (and data) channels.

	*Channel 1 - 433.050 MHz		*Channel 1 - 433.050 MHz

R4002: /* Channel List Frequency Chart */

2025-02-05T16:40:41Z

Channel List Frequency Chart

← Older revision		Revision as of 16:40, 5 February 2025
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	== Channel List Frequency Chart==		== Channel List Frequency Chart==

-	LPD433 433 MHz 434 MHz FM voice (and data) channels. ~~adsfasdfosapf9q34e0r94tiu3q49tqoei r erlaig kej rng eqadjf gadfkjgdafksjdsfa foiadnfjasdjk FUCKKKKK~~	+	LPD433 433 MHz 434 MHz FM voice (and data) channels. a

	*Channel 1 - 433.050 MHz		*Channel 1 - 433.050 MHz

R4002: /* Channel List Frequency Chart */

2025-02-05T16:40:33Z

Channel List Frequency Chart

← Older revision		Revision as of 16:40, 5 February 2025
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	== Channel List Frequency Chart==		== Channel List Frequency Chart==

-	LPD433 433 MHz 434 MHz FM voice (and data) channels	+	LPD433 433 MHz 434 MHz FM voice (and data) channels. adsfasdfosapf9q34e0r94tiu3q49tqoei r erlaig kej rng eqadjf gadfkjgdafksjdsfa foiadnfjasdjk FUCKKKKK

	*Channel 1 - 433.050 MHz		*Channel 1 - 433.050 MHz

R4002 at 16:40, 5 February 2025

2025-02-05T16:40:10Z

← Older revision		Revision as of 16:40, 5 February 2025
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	ITU Region 1 license free unlicensed service 433.05 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.		ITU Region 1 license free unlicensed service 433.05 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.

-	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz.	+	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.

	== Channel List Frequency Chart==		== Channel List Frequency Chart==

← Older revision		Revision as of 15:02, 3 July 2025
Line 1:		Line 1:
	LPD433 - Low Power Device 433 MHz band. Overlaps with the 70cm [[Amateur_radio#Amateur_Radio_Bands_VHF_UHF_and_up\|UHF amateur radio allocation]] (in some areas). Sometimes called SRD433 for '''[[SRD\|Short Range Device]]''' 433 MHz band. Very low power short range 10mW 10milliwatts power limit.		LPD433 - Low Power Device 433 MHz band. Overlaps with the 70cm [[Amateur_radio#Amateur_Radio_Bands_VHF_UHF_and_up\|UHF amateur radio allocation]] (in some areas). Sometimes called SRD433 for '''[[SRD\|Short Range Device]]''' 433 MHz band. Very low power short range 10mW 10milliwatts power limit.

-	ITU Region 1 license free unlicensed service 433.05 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.	+	ITU Region 1 license free unlicensed service 433.04 MHz to 434.79 MHz [[ISM]] band (ITU Region 1 ISM only). May be used for [[Remote_Control#European_Standardization_EU_or_CEPT\|data links, RC, garage door openers]], remote sensing such as doorbells, wireless weather stations, etc. or voice. Narrow FM voice standardized for 69 channels starting at 433.05 MHz ending at 434.775 MHz. Note that datalink, telemetry and [[Remote_Control\|remote control or R/C]] systems do not have to follow the de facto standardized 69 FM voice channels frequency plan.

	Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.		Like [[PMR446]], LPD433’s allocation falls within the US allocation 70cm amateur radio band 420 MHz - 450 MHz. Use of the LPD433 frequencies (and/or the PMR446 frequencies) for any other purpose outside the ham radio service / amateur radio service or [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|legally under Part 15]] of the FCC rules is '''illegal''' in the United States.