Convert binary (hex) data to latitude and longitude

I have GPS personal tracker TK302A, I able to capture the network data and wish to convert it into latitude, longitude, speed, time Please provide me: - Algorithm to convert my hex data to the readable data - Write a script by php, node.js, python or C which can convert a input hex string into json or serialize string. In case you don't know any of above programing languages, only algorithm is ok if I can use it to write my program. Here is some sample data: Sample 1: 0x0000: 4500 0040 2bf0 4000 7606 e9cf 71b9 0636 E..@+.@.v...q..6 0x0010: 704e 06bb c2c4 2328 0038 fdd8 0000 0000 pN....#(.8...... 0x0020: b002 2a80 2d4d 0000 0204 0546 0103 0300 ..*.-M.....F.... 0x0030: 0101 0402 0101 080a 0000 0bac 0000 0000 ................ Sample 2: 0x0000: 4500 0040 2bf2 4000 7606 e9cd 71b9 0636 E..@+.@.v...q..6 0x0010: 704e 06bb c0d4 2328 0121 3134 0000 0000 pN....#(.!14.... 0x0020: b002 1fe0 d60a 0000 0204 0546 0103 0300 ...........F.... 0x0030: 0101 0402 0101 080a 0000 3b3a 0000 0000 ..........;:.... Sample 3: 0x0000: 4500 0040 2bf4 4000 7606 e9cb 71b9 0636 E..@+.@.v...q..6 0x0010: 704e 06bb a706 2328 0219 2f88 0000 0000 pN....#(../..... 0x0020: b002 1fe0 bdc2 0000 0204 0546 0103 0300 ...........F.... 0x0030: 0101 0402 0101 080a 0000 6e04 0000 0000 ..........n..... Sample 4: 0x0000: 4500 0040 2bf0 4000 7606 e9af 71b9 0656 E..@+.@.v...q..V 0x0010: 704e 06bb d0e3 2328 003b 6514 0000 0000 pN....#(.;e..... 0x0020: b002 2a80 b751 0000 0204 0546 0103 0300 ..*..Q.....F.... 0x0030: 0101 0402 0101 080a 0000 0c2a 0000 0000 ...........*.... All above data is for lat 10.836??? and lon 106.630??? Time: 2014/07/27 21:00 to 2014/07/27 21:45 See "cheall" file for full log I got from network traffic. See "che" file for the first network data block (40 byte) - I don't know what is this See "che_2" file for the main network data block (64 byte) - I guess it is main data and content the importent information. Please note that the data (in bit) can be reversed.