Part 15 - Revision history

R4002: /* 15.229 Operation within the band 40.66-40.70 MHz. */

2026-02-28T21:27:43Z

15.229 Operation within the band 40.66-40.70 MHz.

← Older revision		Revision as of 21:27, 28 February 2026
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	''13.56 MHz (13560 kHz) x3 = 40.68 MHz (40680 kHz)''		''13.56 MHz (13560 kHz) x3 = 40.68 MHz (40680 kHz)''

-	This band is used for some limited R/C purposes in the United States as of the early 2020s. It is used for alarm systems, very short range sensor systems and other purposes. Short-range or toy R/C devices use 26 MHz / 27 MHz, 49 MHz, 72 MHz / 75 MHz or the 2.4 GHz unlicensed band in the United States.	+	This band is used for some limited RC or model control radio control R/C type purposes in the United States as of the early 2020s. It is used for alarm systems, very short range sensor systems and other purposes. Short-range or toy R/C devices use 26 MHz / 27 MHz, 49 MHz, 72 MHz / 75 MHz or the 2.4 GHz unlicensed band in the United States.

	§ 15.229 Operation within the band 40.66-40.70 MHz.		§ 15.229 Operation within the band 40.66-40.70 MHz.

R4002: /* 15.229 Operation within the band 40.66-40.70 MHz. */

2026-02-28T18:46:37Z

15.229 Operation within the band 40.66-40.70 MHz.

← Older revision		Revision as of 18:46, 28 February 2026
Line 123:		Line 123:
	''13.56 MHz (13560 kHz) x3 = 40.68 MHz (40680 kHz)''		''13.56 MHz (13560 kHz) x3 = 40.68 MHz (40680 kHz)''

-	This band is ~~not~~ used for R/C purposes in the United States. It is used for alarm systems, very short range sensor systems and other purposes. Short-range or toy R/C devices use 26 MHz / 27 MHz, 49 MHz, 72 MHz / 75 MHz or the 2.4 GHz unlicensed band in the United States.	+	This band is used for some limited R/C purposes in the United States as of the early 2020s. It is used for alarm systems, very short range sensor systems and other purposes. Short-range or toy R/C devices use 26 MHz / 27 MHz, 49 MHz, 72 MHz / 75 MHz or the 2.4 GHz unlicensed band in the United States.

	§ 15.229 Operation within the band 40.66-40.70 MHz.		§ 15.229 Operation within the band 40.66-40.70 MHz.
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	(d) The frequency tolerance of the carrier signal shall be maintained within ±0.01% of the operating frequency over a temperature variation of −20 degrees to + 50 degrees C at normal supply voltage, and for a variation in the primary supply voltage from 85% to 115% of the rated supply voltage at a temperature of 20 degrees C. For battery operated equipment, the equipment tests shall be performed using a new battery.		(d) The frequency tolerance of the carrier signal shall be maintained within ±0.01% of the operating frequency over a temperature variation of −20 degrees to + 50 degrees C at normal supply voltage, and for a variation in the primary supply voltage from 85% to 115% of the rated supply voltage at a temperature of 20 degrees C. For battery operated equipment, the equipment tests shall be performed using a new battery.
-

	== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==		== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2025-02-05T16:38:31Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 16:38, 5 February 2025
Line 139:		Line 139:

	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).		Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).
-	~~'''~~	+
	This section is used for many non-voice purposes, including most alarm radio links and other so-called Short Range Devices or SRDs.		This section is used for many non-voice purposes, including most alarm radio links and other so-called Short Range Devices or SRDs.
-	~~'''~~	+
		+
	The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:		The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2025-02-05T16:38:09Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 16:38, 5 February 2025
Line 139:		Line 139:

	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).		Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).
-		+	'''
	This section is used for many non-voice purposes, including most alarm radio links and other so-called Short Range Devices or SRDs.		This section is used for many non-voice purposes, including most alarm radio links and other so-called Short Range Devices or SRDs.
-		+	'''
	The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:		The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2025-02-05T16:37:59Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 16:37, 5 February 2025
Line 140:		Line 140:
	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).		Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).

		+	This section is used for many non-voice purposes, including most alarm radio links and other so-called Short Range Devices or SRDs.

	The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:		The provisions of this section are restricted to periodic operation within the band 40.66–40.70 MHz ([[ISM]] shared [[SINCGARS\|band]] 40.68 MHz) and above 70 MHz. Except as shown in paragraph (e) of this section, the intentional radiator is restricted to the transmission of a control signal such as those used with alarm systems, door openers, [[Remote_Control#315_MHz_.2F_330_MHz_UHF.2C_433_MHz.2C_433.92_MHz.2C_etc._low_power_systems\|garage door openers]], remote switches, etc. Continuous transmissions, voice, video and the radio control of toys are not permitted. Data is permitted to be sent with a control signal. The following conditions shall be met to comply with the provisions for this periodic operation:

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2025-02-05T16:37:05Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 16:37, 5 February 2025
Line 138:		Line 138:
	== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==		== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==

-	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231.	+	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231 (this section).

R4002: /* 15.240 - Operation in the band 433.5-434.5 MHz. */

2025-02-05T16:36:49Z

15.240 - Operation in the band 433.5-434.5 MHz.

← Older revision		Revision as of 16:36, 5 February 2025
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	== 15.240 - Operation in the band 433.5-434.5 MHz. ==		== 15.240 - Operation in the band 433.5-434.5 MHz. ==

-	''Note that the vast majority of 433 MHz devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231.	+	''Note that the vast majority of 433 MHz devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under [[Part_15#15.231_Periodic_operation_in_the_band_40.66.E2.80.9340.70_MHz_and_above_70_MHz.\|15.231]].
	''		''

R4002: /* 15.240 - Operation in the band 433.5-434.5 MHz. */

2025-02-05T16:36:22Z

15.240 - Operation in the band 433.5-434.5 MHz.

← Older revision		Revision as of 16:36, 5 February 2025
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	== 15.240 - Operation in the band 433.5-434.5 MHz. ==		== 15.240 - Operation in the band 433.5-434.5 MHz. ==
		+
		+	''Note that the vast majority of 433 MHz devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231.
		+	''

	Voice transmissions prohibited for Part 15 devices. In some countries, this overlaps with the 433 MHz [[LPD433]] service. In the USA (and other countries), it may also overlap with the 70cm [[amateur radio]] band.		Voice transmissions prohibited for Part 15 devices. In some countries, this overlaps with the 433 MHz [[LPD433]] service. In the USA (and other countries), it may also overlap with the 70cm [[amateur radio]] band.

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2025-02-05T16:35:36Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 16:35, 5 February 2025
Line 138:		Line 138:
	== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==		== 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. ==

-	Many of the devices operating in the [[LPD433\|433MHz]] or 433.92 MHz ~~region~~, as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231.	+	Many of the devices operating in the [[LPD433\|433MHz]] or 433 MHz ballpark - 433.92 MHz, 433.925 MHz, etc., as well as the various 310 MHz, 315 MHz, 330 MHz and so on bands (garage door openers, etc.) actually operate under 15.231.

R4002: /* 15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz. */

2024-10-23T14:29:42Z

15.231 Periodic operation in the band 40.66–40.70 MHz and above 70 MHz.

← Older revision		Revision as of 14:29, 23 October 2024
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	*Frequency band 40.66 MHz - [[SINCGARS\|40.70 MHz]]: 2,250 microvolts/meter		*Frequency band 40.66 MHz - [[SINCGARS\|40.70 MHz]]: 2,250 microvolts/meter
-	*Frequency band 70 MHz - 130 MHz: 1,250 microvolts/meter	+	*Frequency band 70 MHz - [[VHF_airband\|130 MHz]]: 1,250 microvolts/meter
	*Frequency band 130 MHz - 174 MHz: 1,250 microvolts/meter to 3,750 microvolts/meter		*Frequency band 130 MHz - 174 MHz: 1,250 microvolts/meter to 3,750 microvolts/meter
-	*Frequency band 174 MHz - 260 MHz: 3,750 microvolts/meter to 12,500 microvolts/meter	+	*Frequency band [[Business_Radio#VHF_High_Band_150-174_MHz\|174 MHz]] - 260 MHz: 3,750 microvolts/meter to 12,500 microvolts/meter
	*Frequency band above 470 MHz: 12,500 microvolts/meter		*Frequency band above 470 MHz: 12,500 microvolts/meter