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The textual data unlike images, videos, and audio will not get much distorted while transmitting across the network. Steganography is the process of hiding secret data inside innocent data for secured communication. Software-defined radios are promising as they transmit over air. The approach proposed is performing linguistic steganography and transmitting the stego text from source to destination through software-defined radio. The linguistic steganography is achieved through the Generative Pre-trained Transformer 3 language model. Initially, English alphabets are coded using binary uniquely, followed by generation of scrambling sequence by a pre-shared key. The secret bits and scrambling bits are XORed, and the resultant bit stream will be reversed to ensure additional security. Both sender and receiver should agree upon binary coding of English alphabets. Mapping of these alphabets to binary scrambled …