1. (a) Use of frequencies in 800 MHz band in Mexico border region. All operations in the 806-824/851-869 MHz band within 110 km (68.35 miles) of the U.S./Mexico border (“Sharing Zone”) shall be in accordance with international agreements between the U.S. and Mexico.

   1. (1) The U.S. and Mexico divide primary access to channels in the Sharing Zone as indicated in Table A1 below.

      Table A1—U.S. and Mexico Primary Channels in Sharing Zone

      Channels	Primary access
      1-360	U.S.
      361-610	Mexico.
      611-830	U.S.-Mexico Co-Primary.

   2. (2) Stations authorized on U.S. primary channels in the Sharing Zone are subject to the effective radiated power (ERP) and antenna height limits listed below in Table A2.

      Table A2—Limits on Effective Radiated Power (ERP) and Antenna Height

      Average of the antenna height above average terrain on standard radials in the direction of the common border(meters) 1	Maximum ERP in any direction toward the common border per 25 kHz(watts)
      0 to 503	500
      Above 503 to 609	350
      Above 609 to 762	200
      Above 762 to 914	140
      Above 914 to 1066	100
      Above 1066 to 1219	75
      Above 1219 to 1371	70
      Above 1371 to 1523	65
      Above 1523	5
      1 Standard radials are 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315° to True North. The height above average terrain on any standard radial is based upon the average terrain elevation above mean sea level.

   3. (3) Stations may be authorized on channels primary to Mexico in the Sharing Zone provided the maximum power flux density (PFD) at any point at or beyond the border does not exceed −107 db(W/m ²) per 25 kHz of bandwidth. Licensees may exceed this value only if all potentially affected counterpart operators in the other country agree to a higher PFD level.
   4. (4) Stations authorized on U.S.-Mexico co-primary channels in the Sharing Zone are permitted to exceed a maximum power flux density (PFD) of −107 db(W/m ²) per 25 kHz of bandwidth at any point at or beyond the border only if all potentially affected counterpart operators of 800 MHz high density cellular systems, as defined in § 90.7, agree.

   5. (5) Channels in the Sharing Zone are available for licensing as indicated in Table A3 to this paragraph (a)(5).

      Table A3—Eligibility Requirements for Channels in Sharing Zone

      Channels	Eligibility requirements
      1-230	Report and Order in Gen. Docket No. 87-112.
      231-315a	Public Safety Pool.
      316-550	General Category.
      551-830	Special Mobilized Radio for 800 MHz High Density Cellular.

      1. (i) Channel numbers 1-230 are also available to eligible applicants in the Public Safety Category in the Canada Border Regions. The assignment of these channels will be done in accordance with the policies defined in the Report and Order of Gen. Docket No. 87-112 (See § 90.16). The following channels are available only for mutual aid purposes as defined in Gen. Docket No. 87-112: Channels 1, 39, 77, 115, 153. Mobile and portable radios operating on the mutual aid channels shall employ analog FM emission.
      2. (ii) Channels 231-315a are available to applicants eligible in the Public Safety Category which consists of licensees eligible in the Public Safety Pool of subpart B of this part. 800 MHz high density cellular systems as defined in § 90.7 are prohibited on these channels.
      3. (iii) Channels 316-550 are available in the General Category. All entities are eligible for licensing on these channels. 800 MHz high density cellular systems as defined in § 90.7 are prohibited on these channels.
      4. (iv) Channels 551-830 are available to applicants eligible in the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. ESMR licensees who employ 800 MHz high density cellular systems, as defined in § 90.7, are permitted to operate on these channels.

   6. (6) Stations located outside the Sharing Zone (i.e. greater than 110 km from the border) are subject to the channel eligibility requirements and provisions listed in §§ 90.615 and 90.617 except that stations in the following counties are exempt from the requirements of paragraph (k) of § 90.617:

      California: San Luis Obispo, Kern, San Bernardino, Santa Barbara, Ventura, Los Angeles, Orange and Riverside.

2. (b) Use of frequencies in 900 MHz Band in Mexico border region. All operations in the 896-901/935-940 MHz band within the Mexico border region shall be in accordance with international agreements between the U.S. and Mexico.

   1. (1) Except as specified in § 90.616, the channels listed in Table 1 of this section are available to applicants eligible in the Industrial/Business Pool of subpart C of this part but exclude Specialized Mobile Radio Systems as defined in § 90.603(c). These frequencies are available within the Mexico border region. Specialized Mobile Radio (SMR) systems will not be authorized on these frequencies. For multi-channel systems, channels may be grouped vertically or horizontally as they appear in the following table. Channels numbered above 200 may be used only subject to the power flux density limits stated in paragraph (a)(2) of this section:

      Table 1—United States/Mexico Border Area, Business/Industrial/Land Transportation Pool 896-901/935-940 MHz Band[199 Channels]

      Channel Nos.
      11-12-13-14-15	131-132-133-134-135
      16-17-18-19-20	136-137-138-139-140
      31-32-33-34-35	231-232-233-234-235
      36-37-38-39-40	236-237-238-239-240
      51-52-53-54-55	171-172-173-174-175
      56-57-58-59-60	176-177-178-179-180
      71-72-74-75	271-272-273-274-275
      76-77-78-79-80	276-277-278-279-280
      91-92-93-94-95	211-212-213-214-215
      96-97-98-99-100	216-217-218-219-220
      111-112-113-114-115	311-312-313-314-315
      116-117-118-119-120	316-317-318-319-320
      151-152-153-154-155	351-352-353-354-355
      156-157-158-159-160	356-357-358-359-360
      191-192-193-194-195	391-392-393-394-395
      196-197-198-199-200	396-397-398-399
      251-252-253-254-255	331-332-333-334-335
      256-257-258-259-260	336-337-338-339-340
      291-292-293-294-295	371-372-373-374-375
      296-297-298-299-300	376-377-378-379-380

   2. (2) Except as specified in § 90.616, the channels listed in Table 2 of this section are available for operations only to eligibles in the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. These frequencies are available in the Mexico border region. The spectrum blocks listed in the table below are available for EA-based services according to § 90.681.

      Table 2—United States-Mexico Border Area, SMR Category 896-901/935-940 MHz Band[200 Channels]

      Block	Channel Nos.
      A	1-2-3-4-5-6-7-8-9-10
      B	21-22-23-24-25-26-27-28-29-30
      C	41-42-43-44-45-46-47-48-49-50
      D	61-62-63-64-65-66-67-68-69-70
      E	81-82-83-84-85-86-87-88-89-90
      F	101-102-103-104-105-106-107-108-109-110
      G	121-122-123-124-125-126-127-128-129-130
      H	141-142-143-144-145-146-147-148-149-150
      I	161-162-163-164-165-166-167-168-169-170
      J	181-182-183-184-185-186-187-188-189-190
      K	201-202-203-204-205-206-207-208-209-210
      L	221-222-223-224-225-226-227-228-229-230
      M	241-242-243-244-245-246-247-248-249-250
      N	261-262-263-264-265-266-267-268-269-270
      O	281-282-283-284-285-286-287-288-289-290
      P	301-302-303-304-305-306-307-308-309-310
      Q	321-322-323-324-325-326-327-328-329-330
      R	341-342-343-344-345-346-347-348-349-350
      S	361-362-363-364-365-366-367-368-369-370
      T	381-382-383-384-385-386-387-388-389-390
      Channels numbered above 200 may only be used subject to the power flux density limits at or beyond the Mexico border as stated in paragraph (4) of this section.

   3. (3) The specific channels that are available for licensing in the band 896-901/935-940 MHz within the Mexico border region are subject to Effective Radiated Power (ERP) and Antenna Height limitations as indicated in Table 3 below.

      Table 3—Limits of Effective Radiated Power (ERP) Corresponding to Antenna Heights of Base Stations in the 896-901/935-940 MHz Bands Within 110 Kilometers (68.4 Miles) of the Mexican Border

      Antenna height above mean sea level	ERP in watts(maximum)
      Meters	Feet
      0-503	0-1650	500
      504-609	1651-2000	350
      610-762	2001-2500	200
      764-914	2501-3000	140
      915-1066	3001-3500	100
      1067-1219	3501-4000	75
      1220-1371	4000-4500	70
      1372-1523	4501-5000	65
      Above 1523	Above 5000	5

   4. (4) All channels in the 896-901/935-940 MHz band are available for assignment to U.S. stations within the Mexico border region if the maximum power flux density (pfd) of the station's transmitted signal at any point at or beyond the border does not exceed −107 dB (W/m ²). The spreading loss must be calculated using the free space formula taking into account any antenna discrimination in the direction of the border. Authorizations for stations using channels allotted to Mexico on a primary basis will be secondary to Mexican operations and conditioned to require that licensees take immediate action to eliminate any harmful interference resulting from the station's transmitted signal exceeding −107 dB (W/m ²).

3. (c) Use of 800 MHz Band in Canada Border Region. All operations in the 806-824/851-869 MHz band within 140 km (87 miles) of the U.S./Canada border (“U.S./Canada border area”) shall be in accordance with international agreements between the U.S. and Canada.

   1. (1) The U.S./Canada border area is divided into the following geographical regions (“Canada Border Regions”). U.S. primary channels are shown in the table by region. The remaining channels are primary to Canada (“Canada Primary channels”).

      Table C1—Geographical Regions

      Region	Location (longitude)	U.S. primary channels
      1	66° W-71° W (0-100 km from border)	1-260, 561-710, 772-790 and 792-830.
      2	71° W-80°30′ W (0-100 km from border)	1-170, 621-710 and 795-830.
      3	80°30′ W-85° W (0-100 km from border)	1-320, 501-710, 729-730, 732-750, 752-770, 772-790 and 792-830.
      4	85° W-121°30′ W (0-100 km from border)	1-260, 561-710, 772-790 and 792-830.
      5	121°30′ W-127° W (0-140 km from border)	1-260, 561-710, 772-790 and 792-830.
      6	127° W-143° W (0-100 km from border)	1-260, 561-710, 772-790 and 792-830.
      7A	66° W-71° W (100-140 km from border)	1-830.
      7A	80°30′ W-121°30′ W (100-140 km from border)	1-830.
      7B	71° W-80°30′ W (100-140 km from border)	1-830.
      8	127° W-143° W (100-140 km from border)	1-830.

   2. (2) Stations authorized on U.S. primary channels in all Canada Border Regions, except Region 5, will be subject to the Effective Radiated Power (ERP) and Effective Antenna Height (EAH) limitations listed in Table C2. The Effective Antenna Height is calculated by subtracting the Assumed Average Terrain Elevation (AATE) listed in Table C3 from the antenna height above mean sea level.

      Table C2—Limits of Effective Radiated Power (ERP) Corresponding to Effective Antenna Heights (EAH) for Regions 1, 2, 3, 4, 6, 7 and 8

      Effective Antenna Height (EAH)	ERP watts(maximum)
      Metres	Feet
      0-152	0-500	500
      153-305	501-1000	125
      306-457	1001-1500	40
      458-609	1501-2000	20
      610-914	2001-3000	10
      915-1066	3001-3500	6
      Above 1967	Above 3501	5

      Table C3—Assumed Average Terrain Elevation (AATE) Along the U.S.-Canada Border

      Longitude (Φ)(°West)	Latitude (Ω)(°North)	Assumed average terrain elevation
      United States	Canada
      Feet	Metres	Feet	Metres
      65 ≤Φ <69	Ω <45	0	0	0	0
      ”	45 ≤Ω <46	300	91	300	91
      ”	Ω ≥46	1000	305	1000	305
      69 ≤Φ <73	All	2000	609	1000	305
      73 ≤Φ <74	”	500	152	500	152
      74 ≤Φ <78	”	250	76	250	76
      78 ≤Φ <80	Ω <43	250	76	250	76
      ”	Ω ≥43	500	152	500	152
      80 ≤Φ <90	All	600	183	600	183
      90 ≤Φ <98	”	1000	305	1000	305
      98 ≤Φ <102	”	1500	457	1500	457
      102 ≤Φ <108	”	2500	762	2500	762
      108 ≤Φ <111	”	3500	1066	3500	1066
      111 ≤Φ <113	”	4000	1219	3500	1066
      113 ≤Φ <114	”	5000	1524	4000	1219
      114 ≤Φ <121.5	”	3000	914	3000	914
      121.5 ≤Φ <127	”	0	0	0	0
      Φ ≥127	54 ≤Ω <56	0	0	0	0
      ”	56 ≤Ω <58	500	152	1500	457
      ”	58 ≤Ω <60	0	0	2000	609
      ”	60 ≤Ω <62	4000	1219	2500	762
      ”	62 ≤Ω <64	1600	488	1600	488
      ”	64 ≤Ω <66	1000	305	2000	609
      ”	66 ≤Ω <68	750	228	750	228
      ”	68 ≤Ω <69.5	1500	457	500	152
      ”	Ω ≥69.5	0	0	0	0

   3. (3) Stations authorized on U.S. primary channels in Canada Border Region 5 will be subject to the Effective Radiated Power (ERP) and Antenna Height Above Mean Sea Level limitations listed in Table C4.

      Table C4—Limits of Effective Radiated Power (ERP) Corresponding to Antenna Height Above Mean Sea Level for Region 5

      Antenna Height Above Mean Sea Level	ERP Watts(maximum)
      Metres	Feet
      0-503	0-1650	500
      504-609	1651-2000	350
      610-762	2001-2500	200
      763-914	2501-3000	140
      915-1066	3001-3500	100
      1067-1219	3501-4000	75
      1220-1371	4001-4500	70
      1372-1523	4501-5000	65
      Above 1523	Above 5000	5

   4. (4) Stations may be authorized on Canada Primary channels in the Canada Border Regions provided the maximum power flux density (PFD) per 25 kHz at or beyond the border does not exceed −107 dB(W/m2). Stations authorized on Canada Primary channels will be secondary to stations in Canada unless otherwise specified in an international agreement between the U.S. and Canada.

   5. (5) Stations authorized to operate within 30 kilometers of the center city coordinates listed in Table C5 may operate according to the band plan for Canadian Border Regions 7A and 7B as indicated below.

      Table C5—Cities That Are Considered To Fall Within Candian Border Region 7

      Location	Coordinates	Canadian border region
      Latitude	Longitude
      Akron, Ohio	41°05′00.2″ N	81°30′39.4″ W	7A
      Youngstown, Ohio	41°05′57.2″ N	80°39′01.3″ W	7A
      Syracuse, New York	43°03′04.2″ N	76°09′12.7″ W	7B

   6. (6) The channels listed in Table C6 and paragraph (c)(6)(i) of this section are available in the Canada Border Regions for non-cellular operations to eligible applicants in the Public Safety Category which consists of licensees eligible in the Public Safety Pool of subpart B of this part. 800 MHz high density cellular systems as defined in § 90.7 are prohibited on these channels.

      Table C6—Public Safety Pool 806-816/851-861 MHz Band Channels in the Canada Border Regions

      Canada border region	Channel Nos.	Total(channels)
      Regions 1, 4, 5 and 6	231-260a	60
      Region 2	See paragraph (c)(6)(i) of this section
      Region 3	231-320a, 501-508a	180
      Regions 7A and 8	269, 289, 311, 399, 439, 270, 290, 312, 400, 440, 279, 299, 319, 339, 359, 280, 300, 320, 340, 360, 309, 329, 349, 369, 389, 310, 330, 350, 370, 390, 313, 353, 393, 441, 461, 314, 354, 394, 448, 468, 321, 341, 361, 381, 419, 328, 348, 368, 388, 420, 351, 379, 409, 429, 449, 352, 380, 410, 430, 450, 391, 392, 401, 408, 421, 428, 459, 460, 469, 470	139
      	269a, 289a, 311a, 399a, 439a, 270a, 290a, 312a, 400a, 440a, 279a, 299a, 319a, 339a, 359a, 280a, 300a, 320a, 340a, 360a, 309a, 329a, 349a, 369a, 389a, 310a, 330a, 350a, 370a, 390a, 313a, 353a, 393a, 441a, 461a, 314a, 354a, 394a, 448a, 468a, 321a, 341a, 361a, 381a, 419a, 328a, 348a, 368a, 388a, 420a, 351a, 379a, 409a, 429a, 449a, 352a, 380a, 410a, 430a, 450a, 391a, 392a, 401a, 408a, 421a, 428a, 459a, 460a, 469a
      Region 7B	231-260, 269, 289, 311, 399, 439, 270, 290, 312, 400, 440, 279, 299, 319, 339, 359, 280, 300, 320, 340, 360, 309, 329, 349, 369, 389, 310, 330, 350, 370, 390, 313, 353, 393, 441, 461, 314, 354, 394, 448, 468, 315, 355, 395, 435, 475, 316, 356, 396, 436, 476, 317, 357, 397, 437, 477, 318, 358, 398, 438, 478, 321, 341, 361, 381, 419, 328, 348, 368, 388, 420, 331, 371, 411, 451, 491, 332, 372, 412, 452, 492, 333, 373, 413, 453, 493, 334, 374, 414, 454, 494, 335, 375, 415, 455, 495, 336, 376, 416, 456, 496, 337, 377, 417, 457, 497, 338, 378, 418, 458, 498, 351, 379, 409, 429, 449, 352, 380, 410, 430, 450, 391, 392, 401, 408, 421, 428, 459, 460, 469, 470, 431, 432, 433, 434, 471, 472, 473, 474, 479, 480	339
      	231a-260a, 269a, 289a, 311a, 399a, 439a, 270a, 290a, 312a, 400a, 440a, 279a, 299a, 319a, 339a, 359a, 280a, 300a, 320a, 340a, 360a, 309a, 329a, 349a, 369a, 389a, 310a, 330a, 350a, 370a, 390a, 313a, 353a, 393a, 441a, 461a, 314a, 354a, 394a, 448a, 468a, 315a, 355a, 395a, 435a, 475a, 316a, 356a, 396a, 436a, 476a, 317a, 357a, 397a, 437a, 477a, 318a, 358a, 398a, 438a, 478a, 321a, 341a, 361a, 381a, 419a, 328a, 348a, 368a, 388a, 420a, 331a, 371a, 411a, 451a, 491a, 332a, 372a, 412a, 452a, 492a, 333a, 373a, 413a, 453a, 493a, 334a, 374a, 414a, 454a, 494a, 335a, 375a, 415a, 455a, 495a, 336a, 376a, 416a, 456a, 496a, 337a, 377a, 417a, 457a, 497a, 338a, 378a, 418a, 458a, 498a, 351a, 379a, 409a, 429a, 449a, 352a, 380a, 410a, 430a, 450a, 391a, 392a, 401a, 408a, 421a, 428a, 459a, 460a, 469a, 431a, 432a, 433a, 434a, 471a, 472a, 473a, 474a, 479a, 480a

      1. (i) Channel numbers 1-230 are also available to eligible applicants in the Public Safety Category in the Canada Border Regions. The assignment of these channels will be done in accordance with the policies defined in the Report and Order of Gen. Docket No. 87-112 (See § 90.16). The following channels are available only for mutual aid purposes as defined in Gen. Docket No. 87-112: Channels 1, 39, 77, 115, 153. Mobile and portable radios operating on the mutual aid channels shall employ analog FM emission.
      2. (ii) [Reserved]

   7. (7) The channels listed in Table C7 are available in the Canada Border Regions for the General Category. All entities will be eligible for licensing on these channels. 800 MHz high density cellular systems as defined in § 90.7 are permitted on these channels only as indicated in Table C7. The channels noted for Regions 1, 2, 3, 4, 5 and 6 where high density cellular systems are prohibited are all frequencies that are primary to Canada. Stations may be licensed on these Canada Primary channels according to paragraph (c)(4) of this section.

      Table C7—General Category 806-821/851-866 MHz Band Channels in the Canada Border Regions

      Canada border region	General category channels where 800 MHz high density cellularsystems areprohibited	General category channels where 800 MHz high density cellularsystems arepermitted
      Regions 1, 4, 5 and 6	261-560	561-710
      Region 2	231-620	621-710
      Region 3	321-500a	509-710
      Regions 7A and 8	231-260a, 511-550	None
      Region 7B	511-550	None

   8. (8) The channels listed in Table C8 are available in the Canada Border Regions to applicants eligible in the Industrial/Business Pool of subpart C of this part but exclude Special Mobilized Radio Systems as defined in § 90.603(c). 800 MHz cellular high density systems as defined in § 90.7 are prohibited on these channels.

      Table C8—Business/Industrial/Land Transportation Pool 806-816/851-861 MHz Band Channels in the Canada Border Regions

      Canada border region	Channel Nos.	Total(channels)
      Regions 1, 2, 3, 4, 5 and 6	None	0
      Regions 7A, 7B and 8	261, 271, 281, 291, 301, 262, 272, 282, 292, 302, 263, 273, 283, 293, 303, 264, 274, 284, 294, 304, 265, 275, 285, 295, 305, 266, 276, 286, 296, 306, 267, 277, 287, 297, 307, 268, 278, 288, 298, 308, 322, 362, 402, 442, 482, 323, 363, 403, 443, 483, 324, 364, 404, 444, 484, 325, 365, 405, 445, 485, 326, 366, 406, 446, 486, 327, 367, 407, 447, 487, 342, 382, 422, 462, 502, 343, 383, 423, 463, 503, 344, 384, 424, 464, 504, 345, 385, 425, 465, 505, 346, 386, 426, 466, 506, 347, 387, 427, 467, 507	200
      	261a, 271a, 281a, 291a, 301a, 262a, 272a, 282a, 292a, 302a, 263a, 273a, 283a, 293a, 303a, 264a, 274a, 284a, 294a, 304a, 265a, 275a, 285a, 295a, 305a, 266a, 276a, 286a, 296a, 306a, 267a, 277a, 287a, 297a, 307a, 268a, 278a, 288a, 298a, 308a, 322a, 362a, 402a, 442a, 482a, 323a, 363a, 403a, 443a, 483a, 324a, 364a, 404a, 444a, 484a, 325a, 365a, 405a, 445a, 485a, 326a, 366a, 406a, 446a, 486a, 327a, 367a, 407a, 447a, 487a, 342a, 382a, 422a, 462a, 502a, 343a, 383a, 423a, 463a, 503a, 344a, 384a, 424a, 464a, 504a, 345a, 385a, 425a, 465a, 505a, 346a, 386a, 426a, 466a, 506a, 347a, 387a, 427a, 467a, 507a

   9. (9) The channels listed in Table C9 are available in the Canada Border Regions to applicants eligible in the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. 800 MHz high density cellular systems, as defined in § 90.7, are prohibited on these channels.

      Table C9—SMR Category 806-816/851-861 MHz Channels Available for Site-Based Licensing in the Canada Border Regions

      Canada border region	Channel Nos.	Total(channels)
      Regions 1, 2, 3, 4, 5 and 6	None	0
      Regions 7A and 8	315, 355, 395, 435, 475, 316, 356, 396, 436, 476, 317, 357, 397, 437, 477, 318, 358, 398, 438, 478, 331, 371, 411, 451, 491, 332, 372, 412, 452, 492, 333, 373, 413, 453, 493, 334, 374, 414, 454, 494, 335, 375, 415, 455, 495, 336, 376, 416, 456, 496, 337, 377, 417, 457, 497, 338, 378, 418, 458, 498, 431, 432, 433, 434, 471, 472, 473, 474, 479, 480, 481, 488, 489, 490, 499, 500, 501, 508, 509, 510	160
      	315a, 355a, 395a, 435a, 475a, 316a, 356a, 396a, 436a, 476a, 317a, 357a, 397a, 437a, 477a, 318a, 358a, 398a, 438a, 478a, 331a, 371a, 411a, 451a, 491a, 332a, 372a, 412a, 452a, 492a, 333a, 373a, 413a, 453a, 493a, 334a, 374a, 414a, 454a, 494a, 335a, 375a, 415a, 455a, 495a, 336a, 376a, 416a, 456a, 496a, 337a, 377a, 417a, 457a, 497a, 338a, 378a, 418a, 458a, 498a, 431a, 432a, 433a, 434a, 471a, 472a, 473a, 474a, 479a, 480a, 481a, 488a, 489a, 490a, 499a, 500a, 501a, 508a, 509a, 510a
      Region 7B	481, 488, 489, 490, 499, 500, 501, 508, 509, 510.	20
      	481a, 488a, 489a, 490a, 499a, 500a, 501a, 508a, 509a, 510a.

   10. (10) The channels listed in Table C10 are available in the Canada Border Regions to applicants eligible in the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. ESMR licensees who employ 800 MHz high density cellular systems, as defined in § 90.7, are permitted to operate on these channels. Some of the channels listed in Table C10 are primary to Canada as indicated in paragraph (c)(1) of this section. ESMR systems may be authorized on these Canada Primary channels according to paragraph (c)(4) of this section.

       Table C10—ESMR Category 817-824/862-869 MHz Channels Available for 800 MHz High Density Systems

       Canada Border Region	Channel Nos.	Total
       Regions 1, 2, 3, 4, 5 and 6	711-830	120 Channels.
       Regions 7A, 7B and 8	551-830	280 Channels.

   11. (11) In Canada Border Regions 1, 2, 3, 4, 5 and 6, the following General Category channels are available for licensing to all entities except as described below in paragraphs (c)(11)(i) and (c)(11)(ii): in Regions 1, 4, 5 and 6, channels 261-560; in Region 2, channels 231-620 and in Region 3, channels 321-500.

       1. (i) In a given 800 MHz NPSPAC region, the General Category channels listed paragraph (c)(11) of this section which are vacated by licensees relocating to channels 711-830 and which remain vacant after band reconfiguration will be available for licensing as follows:

          1. (A) Only to eligible applicants in the Public Safety Category until three years after the release of a public notice announcing the completion of band reconfiguration in that region;
          2. (B) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three to five years after the release of a public notice announcing the completion of band reconfiguration in that region; and
          3. (C) To all entities five years after release of a public notice announcing the completion of band reconfiguration in that region.
       2. (ii) The General Category channels listed in paragraph (c)(11) of this section are primary to Canada. Stations may be authorized on these Canada Primary channels according to paragraph (c)(4).

   12. (12) In Canada Border Regions 7A, 7B and 8, the following channels will be available as described in paragraphs (c)(12)(i) and (c)(12)(ii) of this section: for Canada Border Regions 7A and 8, channels 231-260 and channels below 471 in Tables C8 and C9; for Canada Border Region 7B all channels in Tables C8 and C9.

       1. (i) In a given 800 MHz NPSPAC region, the channels listed paragraph (c)(12) of this section which are vacated by licensees relocating to channels 511-830 and which remain vacant after band reconfiguration will be available as follows:

          1. (A) Only to eligible applicants in the Public Safety Category until three years after the release of a public notice announcing the completion of band reconfiguration in that region; and
          2. (B) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three to five years after the release of a public notice announcing the completion of band reconfiguration in that region.
       2. (ii) Five years after the release of a public notice announcing the completion of band reconfiguration in a given 800 MHz NPSPAC region, the channels listed in paragraph (c)(12) of this section will revert back to their original pool categories.

4. (d) Use of 900 MHz Band in Canada Border Region. All operations in the 896-901/935-940 MHz band within the Canada border region shall be in accordance with international agreements between the U.S. and Canada. The following criteria shall govern the assignment of frequency pairs (channels) in the 896-901/935-940 MHz band for stations located in the U.S./Canada border area. They are available for assignments for conventional or trunked systems in accordance with applicable sections of this subpart.

   1. (1) Except as specified in § 90.616, channels 1-399, as listed in § 90.613 table of 896-901/935-940 MHz Channel Designations, are available to eligible applicants for use in the U.S./Canada border area as shown in table 27.

      Table 27—Channels in the 896-901/935-940 MHz Frequency Bands Available in the U.S./Canada Border Area

      Region	Location (longitude)	Channels
      1	66° W-71° W. (0-100 km from border)	1-200, 398, 399
      2	71° W-80°30′ W (0-100 km from border)	1-120
      3	80°30′ W-85° W (0-100 km from border)	1-340
      4	85° W-121°30′ W (0-100 km from border)	1-200, 398, 399
      5	121°30′ W-127° W (0-140 km from border)	1-200, 398, 399
      6	127° W-143° W (0-100 km from border)	1-200, 398, 399
      7	66° W-121°30′ W (100-140 km from border)	1-399
      8	127° W-143° W (100-140 km from border)	1-399
      Note: For assignments in the 896-901/935-940 MHz bands, the cities of Akron, Ohio (41°05′00″ N, 81°30′40″ W) and Youngstown, Ohio (41°05′57″ N, 80°39′02″ W) are considered outside of Region 3, and Syracuse, New York (43°03′04″ N, 76°09′14″ W) is considered outside of Region 2. These cities are defined as an area with the given center coordinates and encompassing a circle of 30 km radius.

   2. (2) All frequency assignments made pursuant to paragraph (d)(1) of this section shall comply with the requirements of § 90.619(b).

   3. (3) In Region 5, except as specified in § 90.616, channels 201-397 may be authorized in the United States under the following conditions:

      1. (i) An assignment may be made if the predicted power flux density (PFD) of a proposed station's signal does not exceed −107 dBW/m ² at the border. The prediction of the PFD is calculated based upon a modified Longley-Rice point-to-point propagation model with time and location variabilities of 10 percent ³ and 3-second digitized terrain date ⁴ .
      2. (ii) Authorizations for Channels 201-397 in Region 5 are secondary to Canadian operations and conditioned to require that licensees take immediate action to eliminate any harmful interference resulting from the station's transmitted signal exceeding −107 dBW/m ² at or beyond the U.S./Canada border.
   4. (4) Except as specified in § 90.616, channel assignments for stations to be located in the geographical area in Region 1 enclosed by the United States-Canada border, the meridian 71° W and the line beginning at the intersection of 44°25′ N, 71° W, then running by great circle arc to the intersection of 45° N, 70° W, then North along meridian 70° W to the intersection of 45°45′ N, then running West along 45°45′ N to the intersection of the United States-Canada border, will be only for channels 121 through 160, inclusive, and will be limited to assignments with 11 kHz or less necessary bandwidth. Coordination with Canada will be required for these channels.
   5. (5) Except as specified in § 90.616, channel assignments for stations to be located in the geographical area in Region 3 enclosed by the meridian of 81° W longitude, the arc of a circle of 100 km radius centered at 42°39′30″ N latitude and 81° W longitude at the northern shore of Lake Erie and drawn clockwise from the southerly intersection with 80°30′ W longitude to intersect the United States-Canada border West of 81° W, and the United States-Canada border, will be only for channels 121 through 230, inclusive, and will be limited to assignments with 11 kHz or less necessary bandwidth. Coordination with Canada will be required for these channels. U.S. stations must protect Canadian stations operating on channels 121 through 230 within an area of 30 km radius from the center city coordinates (referenced to North American Datum 1983 (NAD83)) of London, Ontario (42°59′00.1″ N, 81°13′59.5″ W).

   6. (6) Additional channels available: Except as specified in § 90.616, the channels listed in table 28 are available for assignment in Regions 1-6 if the maximum power flux density (PFD) of the station's transmitted signal does not exceed the limits specified in tables 29 and 30 in this section. The spreading loss shall be calculated using the free space formula taking into account any antenna discrimination in the direction of the border.

      Table 28—Additional Channels Available[Regions 1-6]

      Region	Channel No.'s	Effective radiated power
      1	201-397	See Table 29
      2	121-399	See Table 29
      3	341-399	See Table 29
      4	201-397	See Table 29
      5	201-397	See Table 30
      6	201-397	See Table 29

      Authorizations for stations using these channels will be secondary to Canadian operations and conditioned to require that licensees take immediate action to eliminate any harmful interference resulting from the station's transmitted signal exceeding the values specified in tables 29 or 30 at or beyond the U.S./Canada border.

      Table 29—Maximum Power Flux Density (PFD) at the U.S./Canada Border Corresponding to Effective Antenna Height[Regions 1, 2, 3, 4, and 6]

      Effective antenna height (EAH)	PFD (dBW/m 2)
      Feet	Meters
      0-500	0-152	−84
      501-1000	153-305	−90
      1001-1500	306-457	−95
      1501-2000	458-609	−98
      2001-2500	610-762	−101
      2501-3000	763-914	−101
      3001-3500	915-1066	−103
      3501-4000	1067-1219	−104
      Above 4000	Above 1219	−104

      Table 30—Maximum Power Flux Density (PFD) at the U.S./Canada Border Corresponding to Antenna Height Above Mean Sea Level[Region 5]

      Antenna height above mean sea level	PFD (dBW/m 2)
      Feet	Meters
      0-1650	0-503	−87.0
      1651-2000	504-609	−88.5
      2001-2500	610-762	−91.0
      2501-3000	763-914	−92.5
      3001-3500	915-1066	−94.0
      3501-4000	1067-1219	−95.0
      4001-4500	1220-1371	−95.5
      4501-5000	1372-1523	−96.0
      Above 5000	Above 1523	−107.0

      (Secs. 4(i) and 303, Communications Act, as amended, and 5 U.S.C. 553 (b)(3)(B) and (d)(1))

      Editorial Note:For Federal Register citations affecting § 90.619, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

³ See note 1, paragraph (c) of this section.

⁴ See note 2, paragraph (c) of this section.

[47 FR 41032, Sept. 16, 1982; 47 FR 41045, Sept. 16, 1982]