1、查詢模塊目前的頻段，下面的頻段是3頻段。

2、讀到頻段的信號為e8轉化為十進制除以10就是23.2dbm的增益

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3、AT+QNVFW="/nv/item_files/rfnv/00020994",0100F500指令修改增加增益。

Power dBm 21 21.5 22 22.5 23 23.5 24 24.5 Value HEX D2 D7 DC E1 E6 EB F0 F5 Table 2: LTE TX power value NOTE: 1. NV command will effect after module restart.After restart module,please also send read command to check if you set the value successful. 2. The MAX TX power value for LTE was 24.5 dBm.Do not setting bigger value to module.

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3.2. WCDMA band TX power configuration 3.2.1. WCDMA TX Power read and write command Read command format: AT+QNVR=539,0 +QNVR: "9B9EA0A3A3A3A5A6" OK Write command format: AT+QNVW=539,0,"9B9EA0A3A3A3A5A6" Red part: AT Command Green part: Each band setting ID.Please get it from table 1. Blue part: TX power Value, this value was made up by the two same setting value . It should be A3 A3. 3.2.2. TX Power Calculate method AT+QNVW=539,0,"9B9EA0A3A3A3A5A6" In this command, 9B9EA0A3A3A3A5A6 was HEX data.For the blue part was the TX power value which should write and set to module. With the blue part,we could calculate the TX power as below: HEX DEC A3 -----> 163 TX power = 163/10+6.7 = 23 dBm So for example,if you want to set WCDMA BAND 1 TX power as 22 dBm, the calculation as below: Step 1: Get WCDMA BAND 1 write command from table 1: AT+QNVW=539,0,"9B9EA0A3A3A3A5A6" Step 2: Calculate the setting value 22 dBm = (22-6.7)*10= 0x99 Step 3: sending command to module: AT+QNVW=539,0,"9B9EA09999A3A5A6" Some TX power value were show in below table: Table 3: WCDMA TX power value Power dBm 21 21.5 22 22.5 23 23.5 24 24.5 Value HEX 8F 94 99 9E A3 A8 AD B2 NOTE: 1. NV command will effect after module restart.After reestart module,please also send read command to check if you set the value successful. 2. The MAX TX power value for WCDMA was 24.5 dBm.Do not setting bigger value to module.

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