Quiero saber acerca de...

Federal Register / Vol. 86, No. 7 / Tuesday, January 12, 2021 / Rules and Regulations bandthe low VHF band channels 2
6, the high VHF band channels 713
and the UHF band channels 1436;
i.e., one, two or all three bands or any combination could qualify as less congested. White space devices may only operate at the levels permitted for less congested areas within the area and the specific TV bands that qualify as a less congested area. For the purpose of this definition, a channel is considered available for white space device use if it is available for fixed devices operating with 40 milliwatts EIRP at 3 meters HAAT. Less congested areas in the UHF
TV band are also considered to be less congested areas in the 600 MHz service band.
Mobile white space device. A white space device that transmits and/or receives radiocommunication signals on available channels within a defined geofenced area. A mobile white space device uses an incorporated geolocation capability to determine its location with respect to the boundaries of the defined area. A mobile white space device may operate only in less congested areas.

Narrowband white space device. A
fixed or personal/portable white space device operating in a bandwidth of no greater than 100 kilohertz.

3. Revise 15.707 to read as follows:

2 600 MHz duplex gap. Fixed and personal/portable white space devices may operate in the 657663 MHz segment of the 600 MHz duplex gap.
3 600 MHz service band. Fixed and personal/portable white space devices may operate on frequencies in the bands 617652 MHz and 663698 MHz in areas where 600 MHz band licensees have not commenced operations, as defined in 27.4 of this chapter.
4 Channel 37 guard band. White space devices are not permitted to operate in the band 614617 MHz.
b Only mobile white space devices and fixed white space devices that communicate only with other fixed or mobile white space devices may operate on available channels in the bands 54
72 MHz TV channels 24, 7688 MHz TV channels 5 and 6, and 174216
MHz TV channels 713, subject to the interference protection requirements in 15.711 and 15.712.
c Narrowband and mobile white space devices may only operate on frequencies below 602 MHz.
4. Amend 15.709 by:
a. Revising paragraphs a2i;
b. Adding paragraph a5;
c. Revising paragraph b1;
d. Adding paragraph b4;
e. Revising paragraphs c2 and g1i; and f. Delayed indefinitely, revising paragraph g1ii.
The additions and revisions read as follows:

15.707 Permissible channels of operation.

15.709

General technical requirements.

a
2
iA Fixed devices in the TV bands below 602 MHz: Up to 4 W 36 dBm EIRP, and up to 16 W 42 dBm EIRP in less congested areas. Fixed devices in the 602608 MHz band may operate with up to 4 W 36 dBm EIRP.

a1 470614 MHz band. Fixed and personal/portable white space devices are permitted to operate on available channels in the frequency bands 470
614 MHz TV channels 1437, subject to the interference protection requirements in 15.711 and 15.712.

2291

B Fixed devices in the 600 MHz service bands above 620 MHz: Up to 4
W 36 dBm EIRP, and up to 10 W 40
dBm EIRP in less congested areas.
Fixed devices that operate in any portion of the 614620 MHz band may operate with up to 4 W 36 dBm EIRP.

5 Mobile devices in the TV bands below 602 MHz. Up to 16 W 42 dBm EIRP in less congested areas. Mobile device operation is not permitted above 602 MHz. Mobile devices may operate only in less congested areas.
b
1 Fixed and mobile white space devices. i Technical limits for fixed and mobile white space devices are shown in the table in paragraph b1iii of this section and subject to the requirements of this section.
ii For operation at EIRP levels of 36
dBm 4,000 mW or less, fixed and mobile white space devices may operate at EIRP levels between the values shown in the table in paragraph b1iii of this section provided that the conducted power and the conducted power spectral density PSD limits are linearly interpolated between the values shown and the adjacent channel emission limit of the higher value shown in the table is met. Operation at EIRP levels above 36 dBm 4,000 mW but not greater than 40 dBm 10,000 mW shall follow the requirements for 40 dBm 10,000 mW.
Operation at EIRP levels above 40 dBm 10,000 mW shall follow the requirements for 42 dBm 16,000 mW.
iii The conducted power spectral density from a fixed or mobile white space device shall not be greater than the values shown in the table in this paragraph b1iii when measured in any 100 kilohertz band during any time interval of continuous transmission.

TABLE 1 TO PARAGRAPH b1iii
khammond on DSKJM1Z7X2PROD with RULES

EIRP
6 MHz 16
20
24
28
32
36
40
42

dBm dBm dBm dBm dBm dBm dBm dBm
40 mW
100 mW
250 mW
625 mW
1,600 mW
4,000 mW
1,0000 mW
16,000 mW

4 Narrowband white space devices.
i A narrowband white space device that operates as a client must communicate with a master device
VerDate Sep<11>2014

16:05 Jan 11, 2021

Conducted PSD limit 1
100 kHz dBm
Conducted power limit 6 MHz
Jkt 253001

10
14
18
22
26
30
30
30

dBm dBm dBm dBm dBm dBm dBm dBm
fixed, Mode II, mobile or narrowband that contacts the white space database to obtain a list of available channels and operating powers at its location. A

PO 00000

7.4
3.4
0.6
4.6
8.6
12.6
12.6
12.6

10 mW
25 mW
63 mW
158 mW
400 mW
1,000 mW
1,000 mW
1,000 mW

Frm 00049

Fmt 4700

Sfmt 4700

Conducted adjacent channel emission limit 100 kHz dBm 62.8
58.8
54.8
50.8
46.8
42.8
42.8
42.8

narrowband white space device that acts as a master must incorporate a geolocation mechanism and be capable of obtaining lists of available channels and
E:FRFM12JAR1.SGM

12JAR1