Technical Specifications
| # | Rule Parts | Frequency Range | Power Output | Emission | Tolerance |
|---|
| 1 | 22H | 826.4 MHz - 846.6 MHz | 238.80 mW | 4M32F9W | 2.5ppm |
| 2 | 24E | 1.85 GHz - 1.91 GHz | 237.70 mW | 4M18F9W | 2.5ppm |
| 3 | 27 | 1.71 GHz - 1.75 GHz | 238.80 mW | 4M20F9W | 2.5ppm |
| 4 | 24E | 1.86 GHz - 1.90 GHz | 201.40 mW | 17M9G7D | 2.5ppm |
| 5 | 24E | 1.86 GHz - 1.90 GHz | 171.40 mW | 17M9W7D | 2.5ppm |
| 6 | 24E | 1.85 GHz - 1.91 GHz | 209.90 mW | 1M08G7D | 2.5ppm |
| 7 | 24E | 1.85 GHz - 1.91 GHz | 183.70 mW | 1M09W7D | 2.5ppm |
| 8 | 24E | 1.86 GHz - 1.91 GHz | 203.70 mW | 17M9G7D | 2.5ppm |
| 9 | 24E | 1.86 GHz - 1.91 GHz | 175.80 mW | 17M9W7D | 2.5ppm |
| 1 | 24E | 1.85 GHz - 1.91 GHz | 209.90 mW | 1M08G7D | 2.5ppm |
| 11 | 24E | 1.85 GHz - 1.91 GHz | 182.80 mW | 1M09W7D | 2.5ppm |
| 12 | 27 | 1.72 GHz - 1.75 GHz | 205.10 mW | 17M9G7D | 2.5ppm |
| 13 | 27 | 1.72 GHz - 1.75 GHz | 175.00 mW | 17M9W7D | 2.5ppm |
| 14 | 27 | 1.71 GHz - 1.75 GHz | 214.30 mW | 1M09G7D | 2.5ppm |
| 15 | 27 | 1.71 GHz - 1.75 GHz | 185.40 mW | 1M09W7D | 2.5ppm |
| 16 | 22H | 829 MHz - 844 MHz | 221.80 mW | 9M09G7D | 2.5ppm |
| 17 | 22H | 829 MHz - 844 MHz | 190.10 mW | 9M00W7D | 2.5ppm |
| 18 | 22H | 824.7 MHz - 848.3 MHz | 228.60 mW | 1M09G7D | 2.5ppm |
| 19 | 22H | 824.7 MHz - 848.3 MHz | 198.60 mW | 1M09W7D | 2.5ppm |
| 2 | 27 | 2.51 GHz - 2.56 GHz | 211.80 mW | 17M8G7D | 2.5ppm |
| 21 | 27 | 2.51 GHz - 2.56 GHz | 182.00 mW | 18M0W7D | 2.5ppm |
| 22 | 27 | 704 MHz - 711 MHz | 230.70 mW | 9M02G7D | 2.5ppm |
| 23 | 27 | 704 MHz - 711 MHz | 194.50 mW | 9M07W7D | 2.5ppm |
| 24 | 27 | 699.7 MHz - 715.3 MHz | 232.30 mW | 1M09G7D | 2.5ppm |
| 25 | 27 | 699.7 MHz - 715.3 MHz | 200.90 mW | 1M09W7D | 2.5ppm |
| 26 | 27 | 782 MHz - 782 MHz | 212.80 mW | 8M98G7D | 2.5ppm |
| 27 | 27 | 782 MHz - 782 MHz | 178.20 mW | 8M98W7D | 2.5ppm |
| 28 | 27 | 779.5 MHz - 784.5 MHz | 180.30 mW | 4M48W7D | 2.5ppm |
| 29 | 9 | 793 MHz - 793 MHz | 193.20 mW | 9M03G7D | 1.25ppm |
| 3 | 9 | 793 MHz - 793 MHz | 163.70 mW | 9M00W7D | 1.25ppm |
| 31 | 27 | 709 MHz - 711 MHz | 226.50 mW | 9M02G7D | 2.5ppm |
| 32 | 27 | 709 MHz - 711 MHz | 186.60 mW | 9M07W7D | 2.5ppm |
| 33 | 22H | 831.5 MHz - 841.5 MHz | 208.90 mW | 13M5G7D | 2.5ppm |
| 34 | 22H | 831.5 MHz - 841.5 MHz | 183.70 mW | 13M5W7D | 2.5ppm |
| 35 | 9 | 821.5 MHz - 824 MHz | 201.40 mW | 13M5G7D | 2.5ppm |
| 36 | 9 | 821.5 MHz - 824 MHz | 181.60 mW | 13M4W7D | 2.5ppm |
| 37 | 9 | 814.7 MHz - 824 MHz | 228.60 mW | 1M10G7D | 2.5ppm |
| 38 | 9 | 814.7 MHz - 824 MHz | 193.60 mW | 1M09W7D | 2.5ppm |
| 39 | 27 | 2.31 GHz - 2.31 GHz | 160.30 mW | 9M00G7D | 2.5ppm |
| 4 | 27 | 2.31 GHz - 2.31 GHz | 136.80 mW | 9M12W7D | 2.5ppm |
| 41 | 27 | 2.31 GHz - 2.31 GHz | 141.60 mW | 4M50W7D | 2.5ppm |
| 42 | 27 | 2.58 GHz - 2.61 GHz | 211.30 mW | 17M9G7D | 2.5ppm |
| 43 | 27 | 2.58 GHz - 2.61 GHz | 187.10 mW | 17M9W7D | 2.5ppm |
| 44 | 27 | 2.51 GHz - 2.68 GHz | 345.10 mW | 17M9G7D | 2.5ppm |
| 45 | 27 | 2.51 GHz - 2.68 GHz | 295.80 mW | 17M9W7D | 2.5ppm |
| 46 | 27 | 2.50 GHz - 2.69 GHz | 357.30 mW | 8M98G7D | 2.5ppm |
| 47 | 27 | 2.50 GHz - 2.69 GHz | 302.00 mW | 4M48W7D | 2.5ppm |
| 48 | 27 | 3.46 GHz - 3.54 GHz | 202.30 mW | 17M9G7D | 2.5ppm |
| 49 | 27 | 3.46 GHz - 3.54 GHz | 167.90 mW | 18M0W7D | 2.5ppm |
| 5 | 27 | 3.45 GHz - 3.55 GHz | 216.80 mW | 4M52G7D | 2.5ppm |
| 51 | 27 | 3.45 GHz - 3.55 GHz | 181.60 mW | 4M48W7D | 2.5ppm |
| 52 | 27 | 3.71 GHz - 3.79 GHz | 225.40 mW | 17M9G7D | 2.5ppm |
| 53 | 27 | 3.71 GHz - 3.79 GHz | 181.10 mW | 17M9W7D | 2.5ppm |
| 54 | 27 | 1.72 GHz - 1.77 GHz | 208.40 mW | 17M9G7D | 2.5ppm |
| 55 | 27 | 1.72 GHz - 1.77 GHz | 180.70 mW | 17M9W7D | 2.5ppm |
| 56 | 27 | 1.71 GHz - 1.78 GHz | 216.30 mW | 1M09G7D | 2.5ppm |
| 57 | 27 | 1.71 GHz - 1.78 GHz | 188.40 mW | 1M09W7D | 2.5ppm |
| 58 | 27 | 673 MHz - 688 MHz | 217.80 mW | 17M9G7D | 2.5ppm |
| 59 | 27 | 673 MHz - 688 MHz | 187.10 mW | 17M9W7D | 2.5ppm |
| 6 | 24E | 1.86 GHz - 1.90 GHz | 229.10 mW | 37M9G7D | 2.5ppm |
| 61 | 24E | 1.86 GHz - 1.90 GHz | 225.40 mW | 37M4W7D | 2.5ppm |
| 62 | 24E | 1.86 GHz - 1.91 GHz | 251.20 mW | 23M3G7D | 2.5ppm |
| 63 | 22H | 829 MHz - 844 MHz | 195.40 mW | 18M6G7D | 2.5ppm |
| 64 | 22H | 829 MHz - 844 MHz | 170.20 mW | 18M7W7D | 2.5ppm |
| 65 | 22H | 825.6 MHz - 841.5 MHz | 223.90 mW | 7M50G7D | 2.5ppm |
| 66 | 22H | 826.5 MHz - 847.4 MHz | 252.90 mW | 7M51W7D | 2.5ppm |
| 67 | 27 | 2.51 GHz - 2.56 GHz | 237.70 mW | 37M6G7D | 2.5ppm |
| 68 | 27 | 2.51 GHz - 2.56 GHz | 210.90 mW | 37M1W7D | 2.5ppm |
| 69 | 27 | 2.51 GHz - 2.56 GHz | 246.00 mW | 28M8G7D | 2.5ppm |
| 7 | 27 | 2.51 GHz - 2.56 GHz | 219.30 mW | 32M6W7D | 2.5ppm |
| 71 | 27 | 701.8 MHz - 711 MHz | 209.40 mW | 13M8G7D | 2.5ppm |
| 72 | 27 | 701.8 MHz - 711 MHz | 186.20 mW | 13M8W7D | 2.5ppm |
| 73 | 27 | 701.5 MHz - 713.5 MHz | 218.30 mW | 9M31G7D | 2.5ppm |
| 74 | 27 | 701.5 MHz - 713.5 MHz | 244.90 mW | 9M23W7D | 2.5ppm |
| 75 | 27 | 2.51 GHz - 2.68 GHz | 375.00 mW | 37M5G7D | 2.5ppm |
| 76 | 27 | 2.51 GHz - 2.68 GHz | 325.80 mW | 37M5W7D | 2.5ppm |
| 77 | 27 | 2.50 GHz - 2.68 GHz | 377.60 mW | 23M2G7D | 2.5ppm |
| 78 | 27 | 2.50 GHz - 2.68 GHz | 326.60 mW | 32M8W7D | 2.5ppm |
| 79 | 27 | 3.46 GHz - 3.54 GHz | 235.50 mW | 38M0G7D | 2.5ppm |
| 8 | 27 | 3.46 GHz - 3.54 GHz | 209.40 mW | 37M9W7D | 2.5ppm |
| 81 | 27 | 3.45 GHz - 3.54 GHz | 238.20 mW | 23M3G7D | 2.5ppm |
| 82 | 27 | 3.46 GHz - 3.54 GHz | 220.30 mW | 28M1W7D | 2.5ppm |
| 83 | 27 | 1.72 GHz - 1.77 GHz | 227.50 mW | 18M7G7D | 2.5ppm |
| 84 | 27 | 1.72 GHz - 1.77 GHz | 209.40 mW | 18M6W7D | 2.5ppm |
| 85 | 27 | 1.71 GHz - 1.78 GHz | 249.50 mW | 9M30G7D | 2.5ppm |
| 86 | 27 | 1.71 GHz - 1.78 GHz | 224.90 mW | 9M24W7D | 2.5ppm |
| 87 | 27 | 1.72 GHz - 1.77 GHz | 183.20 mW | 37M7G7D | 2.5ppm |
| 88 | 27 | 1.72 GHz - 1.77 GHz | 157.00 mW | 37M9W7D | 2.5ppm |
| 89 | 27 | 1.72 GHz - 1.77 GHz | 191.40 mW | 28M5G7D | 2.5ppm |
| 9 | 27 | 1.71 GHz - 1.77 GHz | 165.20 mW | 22M8W7D | 2.5ppm |
| 91 | 24E | 1.86 GHz - 1.90 GHz | 246.60 mW | 18M1G7D | 2.5ppm |
| 92 | 24E | 1.86 GHz - 1.90 GHz | 182.40 mW | 18M0W7D | 2.5ppm |
| 93 | 24E | 1.85 GHz - 1.91 GHz | 248.90 mW | 4M50G7D | 2.5ppm |
| 94 | 24E | 1.85 GHz - 1.91 GHz | 191.40 mW | 4M52W7D | 2.5ppm |
| 95 | 22H | 834 MHz - 839 MHz | 258.80 mW | 18M0G7D | 2.5ppm |
| 96 | 22H | 834 MHz - 839 MHz | 201.40 mW | 18M0W7D | 2.5ppm |
| 97 | 22H | 826.5 MHz - 846.5 MHz | 266.70 mW | 4M52G7D | 2.5ppm |
| 98 | 22H | 826.5 MHz - 846.5 MHz | 207.00 mW | 4M50W7D | 2.5ppm |
| 99 | 27 | 2.52 GHz - 2.55 GHz | 250.60 mW | 39M0G7D | 2.5ppm |
| 1 | 27 | 2.52 GHz - 2.55 GHz | 184.90 mW | 38M8W7D | 2.5ppm |
| 101 | 27 | 2.52 GHz - 2.56 GHz | 197.20 mW | 28M9W7D | 2.5ppm |
| 102 | 27 | 706.5 MHz - 708.5 MHz | 281.20 mW | 13M5G7D | 2.5ppm |
| 103 | 27 | 706.5 MHz - 708.5 MHz | 219.30 mW | 13M5W7D | 2.5ppm |
| 104 | 27 | 704 MHz - 711 MHz | 219.80 mW | 9M00W7D | 2.5ppm |
| 105 | 27 | 782 MHz - 782 MHz | 233.30 mW | 8M97G7D | 2.5ppm |
| 106 | 27 | 782 MHz - 782 MHz | 177.40 mW | 8M99W7D | 2.5ppm |
| 107 | 27 | 779.5 MHz - 784.5 MHz | 238.20 mW | 4M47G7D | 2.5ppm |
| 108 | 27 | 779.5 MHz - 784.5 MHz | 185.40 mW | 4M51W7D | 2.5ppm |
| 109 | 9 | 793 MHz - 793 MHz | 230.10 mW | 8M98G7D | 1.25ppm |
| 11 | 9 | 793 MHz - 793 MHz | 182.40 mW | 8M98W7D | 1.25ppm |
| 111 | 9 | 790.5 MHz - 795.5 MHz | 231.20 mW | 4M48G7D | 1.25ppm |
| 112 | 9 | 790.5 MHz - 795.5 MHz | 184.90 mW | 4M49W7D | 1.25ppm |
| 113 | 24E | 1.87 GHz - 1.90 GHz | 249.50 mW | 39M0G7D | 2.5ppm |
| 114 | 24E | 1.87 GHz - 1.90 GHz | 185.40 mW | 38M9W7D | 2.5ppm |
| 115 | 24E | 1.87 GHz - 1.90 GHz | 250.60 mW | 32M6G7D | 2.5ppm |
| 116 | 24E | 1.86 GHz - 1.91 GHz | 200.40 mW | 13M5W7D | 2.5ppm |
| 117 | 22H | 834 MHz - 839 MHz | 263.60 mW | 18M0G7D | 2.5ppm |
| 118 | 22H | 834 MHz - 839 MHz | 190.10 mW | 18M0W7D | 2.5ppm |
| 119 | 22H | 829 MHz - 844 MHz | 270.40 mW | 8M99G7D | 2.5ppm |
| 12 | 22H | 826.5 MHz - 846.5 MHz | 199.10 mW | 4M50W7D | 2.5ppm |
| 121 | 9 | 824 MHz - 824 MHz | 257.60 mW | 18M0G7D | 2.5ppm |
| 122 | 9 | 824 MHz - 824 MHz | 185.80 mW | 18M0W7D | 2.5ppm |
| 123 | 9 | 819 MHz - 824 MHz | 264.20 mW | 8M99G7D | 2.5ppm |
| 124 | 9 | 816.5 MHz - 824 MHz | 199.50 mW | 4M50W7D | 2.5ppm |
| 125 | 27 | 2.31 GHz - 2.31 GHz | 184.10 mW | 8M99G7D | 2.5ppm |
| 126 | 27 | 2.31 GHz - 2.31 GHz | 141.30 mW | 9M00W7D | 2.5ppm |
| 127 | 27 | 2.31 GHz - 2.31 GHz | 143.20 mW | 4M50W7D | 2.5ppm |
| 128 | 27 | 2.59 GHz - 2.60 GHz | 210.90 mW | 36M0G7D | 2.5ppm |
| 129 | 27 | 2.59 GHz - 2.60 GHz | 161.10 mW | 36M0W7D | 2.5ppm |
| 13 | 27 | 2.58 GHz - 2.62 GHz | 228.60 mW | 8M66G7D | 2.5ppm |
| 131 | 27 | 2.58 GHz - 2.62 GHz | 175.40 mW | 8M72W7D | 2.5ppm |
| 132 | 27 | 2.55 GHz - 2.64 GHz | 418.80 mW | 96M9G7D | 2.5ppm |
| 133 | 27 | 2.55 GHz - 2.64 GHz | 336.50 mW | 96M9W7D | 2.5ppm |
| 134 | 27 | 2.52 GHz - 2.67 GHz | 443.60 mW | 36M0G7D | 2.5ppm |
| 135 | 27 | 2.52 GHz - 2.67 GHz | 360.60 mW | 36M0W7D | 2.5ppm |
| 136 | 27 | 1.73 GHz - 1.76 GHz | 222.80 mW | 39M1G7D | 2.5ppm |
| 137 | 27 | 1.73 GHz - 1.76 GHz | 171.00 mW | 38M8W7D | 2.5ppm |
| 138 | 27 | 1.72 GHz - 1.77 GHz | 248.90 mW | 23M1G7D | 2.5ppm |
| 139 | 27 | 1.73 GHz - 1.76 GHz | 184.10 mW | 32M5W7D | 2.5ppm |
| 14 | 27 | 673 MHz - 688 MHz | 267.30 mW | 18M0G7D | 2.5ppm |
| 141 | 27 | 673 MHz - 688 MHz | 198.20 mW | 18M0W7D | 2.5ppm |
| 142 | 27 | 668 MHz - 693 MHz | 201.80 mW | 9M00W7D | 2.5ppm |
| 143 | 27 | 3.75 GHz - 3.93 GHz | 456.00 mW | 97M0G7D | 2.5ppm |
| 144 | 27 | 3.75 GHz - 3.93 GHz | 359.70 mW | 97M0W7D | 2.5ppm |
| 145 | 27 | 3.72 GHz - 3.96 GHz | 495.50 mW | 36M0G7D | 2.5ppm |
| 146 | 27 | 3.72 GHz - 3.96 GHz | 392.60 mW | 36M1W7D | 2.5ppm |
| 147 | 27 | 3.75 GHz - 3.75 GHz | 485.30 mW | 97M0G7D | 2.5ppm |
| 148 | 27 | 3.75 GHz - 3.75 GHz | 361.40 mW | 97M0W7D | 2.5ppm |
| 149 | 27 | 3.72 GHz - 3.78 GHz | 500.00 mW | 36M0G7D | 2.5ppm |
| 15 | 27 | 3.72 GHz - 3.78 GHz | 407.40 mW | 36M1W7D | 2.5ppm |
| 151 | 27 | 3.50 GHz - 3.50 GHz | 415.90 mW | 96M8G7D | 2.5ppm |
| 152 | 27 | 3.50 GHz - 3.50 GHz | 328.10 mW | 96M7W7D | 2.5ppm |
| 153 | 27 | 3.46 GHz - 3.53 GHz | 474.20 mW | 27M2G7D | 2.5ppm |
| 154 | 27 | 3.46 GHz - 3.53 GHz | 375.00 mW | 27M3W7D | 2.5ppm |
| 155 | 27 | 3.50 GHz - 3.50 GHz | 391.70 mW | 96M8G7D | 2.5ppm |
| 156 | 27 | 3.50 GHz - 3.50 GHz | 303.40 mW | 96M7W7D | 2.5ppm |
| 157 | 27 | 3.47 GHz - 3.53 GHz | 440.60 mW | 36M0G7D | 2.5ppm |
| 158 | 27 | 3.47 GHz - 3.53 GHz | 344.30 mW | 36M0W7D | 2.5ppm |
| 159 | 27 | 2.55 GHz - 2.64 GHz | 729.50 mW | 96M9G7D | 2.5ppm |
| 16 | 27 | 2.55 GHz - 2.64 GHz | 558.50 mW | 97M0W7D | 2.5ppm |
| 161 | 27 | 2.51 GHz - 2.67 GHz | 748.20 mW | 27M3G7D | 2.5ppm |
| 162 | 27 | 2.50 GHz - 2.69 GHz | 575.40 mW | 8M74W7D | 2.5ppm |
| 163 | 27 | 3.75 GHz - 3.93 GHz | 688.70 mW | 96M9G7D | 2.5ppm |
| 164 | 27 | 3.75 GHz - 3.93 GHz | 557.20 mW | 96M9W7D | 2.5ppm |
| 165 | 27 | 3.72 GHz - 3.96 GHz | 744.70 mW | 27M3G7D | 2.5ppm |
| 166 | 27 | 3.72 GHz - 3.96 GHz | 625.20 mW | 27M3W7D | 2.5ppm |
| 167 | 27 | 3.75 GHz - 3.75 GHz | 370.70 mW | 96M9G7D | 2.5ppm |
| 168 | 27 | 3.75 GHz - 3.75 GHz | 297.20 mW | 96M9W7D | 2.5ppm |
| 169 | 27 | 3.72 GHz - 3.78 GHz | 703.10 mW | 36M1G7D | 2.5ppm |
| 17 | 27 | 3.72 GHz - 3.78 GHz | 582.10 mW | 35M8W7D | 2.5ppm |
| 171 | 27 | 3.50 GHz - 3.50 GHz | 779.80 mW | 104MG7D | 2.5ppm |
| 172 | 27 | 3.50 GHz - 3.50 GHz | 641.20 mW | 104MW7D | 2.5ppm |
| 173 | 27 | 3.50 GHz - 3.50 GHz | 792.50 mW | 87M2G7D | 2.5ppm |
| 174 | 27 | 3.49 GHz - 3.51 GHz | 651.60 mW | 77M6W7D | 2.5ppm |
| 175 | 27 | 3.50 GHz - 3.50 GHz | 687.10 mW | 104MG7D | 2.5ppm |
| 176 | 27 | 3.50 GHz - 3.50 GHz | 572.80 mW | 104MW7D | 2.5ppm |
| 177 | 27 | 3.47 GHz - 3.53 GHz | 756.80 mW | 36M1G7D | 2.5ppm |
| 178 | 27 | 3.47 GHz - 3.53 GHz | 632.40 mW | 35M9W7D | 2.5ppm |
Modular TypeSingle Modular ApprovalConfidentialityLong Term Grant NotesPower listed is maximum conducted output power. Single modular approval for mobile RF exposure condition.
This device supports
LTE of 1.4, 3, 5, 10, 15 and 20 MHz bandwidth modes for FDD LTE Bands 2, 4, 25 and 66;
LTE of 1.4, 3, 5, 10 and 15 MHz bandwidth modes for FDD LTE Bands 26;
LTE of 5, 10, 15 and 20 MHz bandwidth modes for FDD LTE Bands 7 and 71;
LTE of 1.4, 3, 5 and 10 MHz bandwidth modes for FDD LTE Bands 5 and 12;
LTE of 5 and 10 MHz bandwidth modes for FDD LTE Bands 13, 14, 17 and 30; and
LTE of 5, 10, 15 and 20 MHz bandwidth modes for TDD LTE Band 38, 41, 42 and 43.
This device also supports Frequency Range 1 5G NR modes of
5, 10, 15, 20, 25, 30, 35 and 40 MHz bandwidth for FDD Bands n25 and n66;
5, 10, 15, 20, 25, 30 and 40 MHz bandwidth for FDD Band n7;
5, 10, 15, and 20 MHz bandwidth for FDD Bands n2, n5, n26 and n71;
5, 10 and 15 MHz bandwidth for FDD Band n12;
5 and 10 MHz bandwidth for FDD Bands n13, n14 and n30;
10, 15, 20, 30 and 40 MHz bandwidth modes for TDD Band n38; and
10, 15, 20, 30, 40, 50, 60, 70, 80, 90 and 100 MHz bandwidth modes for TDD Bands n41, n77 and n78.
This device supports downlink carrier aggregation for inter-band and intra-band, uplink carrier aggregation for intra-band in LTE Bands 2/5/7/12/41/42/66.
Powers listed are for the highest power and widest bandwidth within each band for QPSK and QAM modulations for single carrier operations and, where applicable, widest bandwidth and highest power for intra-band uplink carrier aggregation.
The module antenna(s) must be installed to meet the RF exposure compliance separation distance of 20 cm. Co-location of this module with other transmitters would require the use of FCC multi-transmitter product procedures. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. OEM integrators must insure that the end user has no manual instructions to remove or install this module. For mobile operating configurations the antenna gain, including cable loss, must not exceed the gains documented in this filing for satisfying RF exposure compliance, as defined in 2.1091. Under no conditions may an antenna gain be used that would exceed the ERP and/or EIRP power limits as specified in Parts 22/24/27/90. The Grantee is responsible for providing the documentation required for modular use.