245 MHz VHF CB - Revision history

R4002: /* Technical Specifications */

2026-03-11T21:00:42Z

Technical Specifications

← Older revision		Revision as of 21:00, 11 March 2026
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	Heavily used by taxi companies, ride share drivers, delivery services, hobbyists, security companies, bars, restaurants, general [[Business_Radio\|business]] users, trucking companies, etc. Mobile radios and handheld radios are very popular. Estimates of users above one million, especially in larger urban areas. According to reports, 27 MHz HF CB and 78 MHz VHF CB are niche services and 245 MHz VHF CB is by far the most commonly used personal radio service in Thailand and neighboring areas.		Heavily used by taxi companies, ride share drivers, delivery services, hobbyists, security companies, bars, restaurants, general [[Business_Radio\|business]] users, trucking companies, etc. Mobile radios and handheld radios are very popular. Estimates of users above one million, especially in larger urban areas. According to reports, 27 MHz HF CB and 78 MHz VHF CB are niche services and 245 MHz VHF CB is by far the most commonly used personal radio service in Thailand and neighboring areas.

-	Thailand apparently has [[11_meter\|26-27]] MHz [[CB]] - popular with fishing fleets, freebanders, ham operators and DXers, a mid-band VHF [[78_MHz_VHF_CB\|78 MHz band]] service from 78.0000 MHz to 78.9875 MHz (12.5 kHz steps, 10 watt power limit and '''78 MHz CB radios must be yellow''') as well.	+	Thailand apparently has [[11_meter\|26-27]] MHz [[CB]] - popular with fishing fleets, freebanders, ham operators and DXers, a mid-band VHF "VHF 78" [[78_MHz_VHF_CB\|78 MHz band]] service from 78.0000 MHz to 78.9875 MHz (12.5 kHz steps, 10 watt power limit and '''78 MHz CB radios must be yellow''') as well.

	'''The 245 MHz - 247 MHz band is also allowed in Bangladesh, with the same band plan, power limits and other technical specifications. '''		'''The 245 MHz - 247 MHz band is also allowed in Bangladesh, with the same band plan, power limits and other technical specifications. '''

R4002: /* Technical Specifications */

2026-03-11T21:00:14Z

Technical Specifications

← Older revision		Revision as of 21:00, 11 March 2026
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	245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.		245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.

-	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode (narrow mode, 12.5 kHz channel bandwidth - known as “12K” or 12K5F3E or 11K3F3E / 11K2F3E / 11K0F3E [[emission]] and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.	+	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode (narrow mode, 12.5 kHz channel bandwidth - known as “12K” or 12K5F3E or 11K3F3E / 11K2F3E / 11K0F3E [[Emission_Designator\|emission]] and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.

	12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''		12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''

R4002 at 20:59, 11 March 2026

2026-03-11T20:59:38Z

← Older revision		Revision as of 20:59, 11 March 2026
Line 13:		Line 13:
	245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.		245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.

-	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode (narrow mode, 12.5 kHz channel bandwidth - known as “12K” or 12K5F3E or 11K3F3E / 11K2F3E / 11K0F3E emission and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.	+	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode (narrow mode, 12.5 kHz channel bandwidth - known as “12K” or 12K5F3E or 11K3F3E / 11K2F3E / 11K0F3E [[emission]] and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.

	12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''		12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''

R4002 at 18:07, 30 December 2024

2024-12-30T18:07:38Z

← Older revision		Revision as of 18:07, 30 December 2024
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	Thailand and Bangladesh only. VHF 245MHz VHF 245 MHz CB license free two-way radio service. Handheld walkie talkie radios and mobile vehicle car radios are very popular and sold by all major land mobile radio manufacturers and vendors, professional two-way radio brands including Icom, Motorola, Baofeng, TYT, Hytera, Tait, AnyTone, Kenwood, Alinco, Yaesu and Vertex Standard as well as numerous re-brands. Both 80 and 160 channel versions must have red cases.		Thailand and Bangladesh only. VHF 245MHz VHF 245 MHz CB license free two-way radio service. Handheld walkie talkie radios and mobile vehicle car radios are very popular and sold by all major land mobile radio manufacturers and vendors, professional two-way radio brands including Icom, Motorola, Baofeng, TYT, Hytera, Tait, AnyTone, Kenwood, Alinco, Yaesu and Vertex Standard as well as numerous re-brands. Both 80 and 160 channel versions must have red cases.

-	'''Radios must have red cases per Thai law.'''	+	'''Radios must have red cases per Thai law.'''

	In 2020 the regulations were updated and the band was expanded from 80 channels to 160 channels - band limit expanded 1 MHz from 245.9875 MHz to 246.9875 MHz. 80 channel equipment remains legal but 160 channel equipment is being aggressively marketed and sold by Alinco, Spender and other major radio communications equipment companies. Radios must continue to have a red case. Many radios are sold for the 222-225 MHz amateur band but are easily modified to cover 220-260 MHz or 220-270 MHz.		In 2020 the regulations were updated and the band was expanded from 80 channels to 160 channels - band limit expanded 1 MHz from 245.9875 MHz to 246.9875 MHz. 80 channel equipment remains legal but 160 channel equipment is being aggressively marketed and sold by Alinco, Spender and other major radio communications equipment companies. Radios must continue to have a red case. Many radios are sold for the 222-225 MHz amateur band but are easily modified to cover 220-260 MHz or 220-270 MHz.

R4002 at 21:38, 27 December 2024

2024-12-27T21:38:14Z

← Older revision		Revision as of 21:38, 27 December 2024
Line 1:		Line 1:
-	Thailand and Bangladesh only. VHF 245MHz VHF 245 MHz CB license free two-way radio service. Handheld walkie talkie radios and mobile vehicle car radios are very popular and sold by all major land mobile radio manufacturers and vendors, professional two-way radio brands including Icom, Motorola, Baofeng, TYT, Hytera, Tait, AnyTone, Kenwood, Alinco, Yaesu and Vertex Standard as well as numerous re-brands. Both 80 and 160 channel versions must have red cases.	+	Thailand and Bangladesh only. VHF 245MHz VHF 245 MHz CB license free two-way radio service. Handheld walkie talkie radios and mobile vehicle car radios are very popular and sold by all major land mobile radio manufacturers and vendors, professional two-way radio brands including Icom, Motorola, Baofeng, TYT, Hytera, Tait, AnyTone, Kenwood, Alinco, Yaesu and Vertex Standard as well as numerous re-brands. Both 80 and 160 channel versions must have red cases.
		+
		+	'''Radios must have red cases per Thai law.'''

	In 2020 the regulations were updated and the band was expanded from 80 channels to 160 channels - band limit expanded 1 MHz from 245.9875 MHz to 246.9875 MHz. 80 channel equipment remains legal but 160 channel equipment is being aggressively marketed and sold by Alinco, Spender and other major radio communications equipment companies. Radios must continue to have a red case. Many radios are sold for the 222-225 MHz amateur band but are easily modified to cover 220-260 MHz or 220-270 MHz.		In 2020 the regulations were updated and the band was expanded from 80 channels to 160 channels - band limit expanded 1 MHz from 245.9875 MHz to 246.9875 MHz. 80 channel equipment remains legal but 160 channel equipment is being aggressively marketed and sold by Alinco, Spender and other major radio communications equipment companies. Radios must continue to have a red case. Many radios are sold for the 222-225 MHz amateur band but are easily modified to cover 220-260 MHz or 220-270 MHz.

-	Also known as "245 VHF" "245 CB" "CB 245" or other similar names. 245 MHz VHF band, FM voice. Favorable propagation characteristics, comparable to the 1.25 meter ham radio band at 220 MHz / 222 MHz - 225 MHz. ~~'''Radios must have red cases per Thai law.'''~~	+	Also known as "245 VHF" "245 CB" "CB 245" or other similar names. 245 MHz VHF band, FM voice. Favorable propagation characteristics, comparable to the 1.25 meter ham radio band at 220 MHz / 222 MHz - 225 MHz.

	==Technical Specifications==		==Technical Specifications==

R4002: /* 245 MHz VHF CB Channel Frequencies 80 Channel and 160 Channel */

2024-12-27T21:37:20Z

245 MHz VHF CB Channel Frequencies 80 Channel and 160 Channel

← Older revision		Revision as of 21:37, 27 December 2024
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	\|246.9875 MHz		\|246.9875 MHz
	\|}		\|}
		+

	[[File:Thai_Military_Motorola_245_MHz_VHF_Walkie_Talkie_GettyImages.jpg\|400px\|thumb\|left\|Motorola 245 MHz VHF handheld portable 5 watt walkie talkie 80 channel military radio 245.0000 MHz 245.9875 MHz 245-246 MHz - GettyImages]]		[[File:Thai_Military_Motorola_245_MHz_VHF_Walkie_Talkie_GettyImages.jpg\|400px\|thumb\|left\|Motorola 245 MHz VHF handheld portable 5 watt walkie talkie 80 channel military radio 245.0000 MHz 245.9875 MHz 245-246 MHz - GettyImages]]
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	[[File:245_MHz_VHF_CB_Radio_ALINCO_DR-245_PL_Mobile_Thailand.jpg\|600px\|thumb\|left\|Alinco DR-245 PL DR-245DPL VHF FM Mobile Transceiver Alinco 245 MHz CB radio 80 channel transceiver, switchable channel or frequency display, currently set to 245 MHz VHF CB channel 41 - 245.5000 MHz]]		[[File:245_MHz_VHF_CB_Radio_ALINCO_DR-245_PL_Mobile_Thailand.jpg\|600px\|thumb\|left\|Alinco DR-245 PL DR-245DPL VHF FM Mobile Transceiver Alinco 245 MHz CB radio 80 channel transceiver, switchable channel or frequency display, currently set to 245 MHz VHF CB channel 41 - 245.5000 MHz]]

-	[[Category: VHF/UHF Radio Services]]	+	[[Category:VHF/UHF Radio Services]]
	[[Category:Personal_Radio_Services]]		[[Category:Personal_Radio_Services]]

R4002: /* Technical Specifications */

2024-12-27T21:36:52Z

Technical Specifications

← Older revision		Revision as of 21:36, 27 December 2024
Line 7:		Line 7:
	==Technical Specifications==		==Technical Specifications==

-	'''160 channels''' ~~- previously 80 channels~~ - straight channel numbering sequence.	+	'''160 channels''' - straight channel numbering sequence.

	245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.		245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.

R4002: /* Technical Specifications */

2024-12-27T21:36:08Z

Technical Specifications

← Older revision		Revision as of 21:36, 27 December 2024
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	245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.		245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.

-	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode. 11K3F3E / 11K2F3E / 11K0F3E emission and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.	+	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode (narrow mode, 12.5 kHz channel bandwidth - known as “12K” or 12K5F3E or 11K3F3E / 11K2F3E / 11K0F3E emission and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.

	12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''		12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''

R4002: /* Technical Specifications */

2024-12-27T21:34:19Z

Technical Specifications

← Older revision		Revision as of 21:34, 27 December 2024
Line 7:		Line 7:
	==Technical Specifications==		==Technical Specifications==

-	160 channels, straight channel numbering sequence. 245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode. 11K3F3E / 11K2F3E / 11K0F3E emission and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.	+	'''160 channels''' - previously 80 channels - straight channel numbering sequence.
		+
		+	245-246.9875 MHz, 245.0000 MHz to 246.9875 MHz. 245 MHz - 247 MHz.
		+
		+	CTCSS, DCS and other selective calling or squelch systems are legal and heavily used. Narrow band FM mode. 11K3F3E / 11K2F3E / 11K0F3E emission and other slightly more narrow bandwidth FM emissions such as 9K10F3E, 8K50F3E, 6K00F3E etc.

	12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''		12.5 kHz channel steps. '''10 watt RF output power limit. No limit on antenna gain. Mobile antennas and base station fixed station antennas are widely used. '''

R4002 at 13:14, 14 February 2024

2024-02-14T13:14:16Z

← Older revision		Revision as of 13:14, 14 February 2024
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	[[Category: VHF/UHF Radio Services]]		[[Category: VHF/UHF Radio Services]]
		+	[[Category:Personal_Radio_Services]]