No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan MediaTek Inc. DFS client device channel plan and software operational declaration We, MediaTek Inc., declare that the device, FCC ID: RAS-MT7921K Model Name: MT7921K, does not have Ad Hoc on non-US frequencies and/or on DFS frequencies. Also, the client software and associated drivers will not initiate any transmission on DFS frequencies without initiation by a master. This includes restriction on transmissions for beacons and support for ad-
hoc peer-to-peer modes. Below is the channel / frequency plan for the device 1 2 3 4 5 6 7 8 9 10 11 Frequency (MHz) 2412 2462 Active Active Active Active Active Active Active Active Active Active Active 2417 2422 2427 2432 2437 2442 2452 2457 2447 Scan Type CH CH Frequency (MHz) Scan Type 12 13 2467 2472 Active Active CH 36 38 40 42 44 46 48 Frequency (MHz) 5180 5240 Active Active Active Active Active Active Active 5190 5200 5210 5220 5230 Scan Type CH 52 54 56 58 60 62 64 Frequency (MHz) 5260 5270 5280 5290 5300 5310 5320 Scan Type Passive Passive Passive Passive Passive Passive Passive CH 100 Frequency (MHz) 5500 102 5510 104 5520 106 5530 108 5540 110 5550 112 5560 116 5580 118 5590 120 5600 122 5610 Scan Type Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive CH 124 Frequency (MHz) 5620 126 5630 128 5640 132 5660 134 5670 136 5680 138 5690 140 5700 142 5710 144 5720 Scan Type Passive Passive Passive Passive Passive Passive Passive Passive Passive Passive CH 149 Frequency (MHz) 5745 165 5825 Active Active Active Active Active Active Active Active 153 5765 151 5755 161 5805 159 5795 157 5785 155 5775 Scan Type Also, on DFS channels, the WLAN driver in the device operates under the control of an AP at all times, except when in ad-hoc mode on US non-DFS channels. The device passively scans DFS frequencies until a master device is detected. The control of this functionality is not accessible to anyone under any conditions. Furthermore, the firmware is protected by a special signature and CRC checksum. Signature and CRC checksum will be calculated and verified before firmware upgrade. Unauthorized modification to firmware will lead to the failure of verification and thus firmware upgrade will not be allowed. Sincerely yours, MediaTek Inc. No.1, Duxing 1st Rd., East District, Hsinchu City 300, Taiwan
Stella Chang/ Business Marketing Manager MediaTek Inc. Tel.: + 886-3-5600868 Fax: + 886-3-6662673 E-mail: Stella.Chang@mediatek.com