A detailed account of the characteristics of the MSK has been presented and comparison with other modulation techniques like BPSK, QPSK, OQPSK has been drawn. The features of MSK like minimum bandwidth, constant envelope and continuity in phase at bit transition instants have been verified experimentally. The received signal has been detected differentially in which bit sequence is detected from the phase difference between alternate signalling intervals. This method of detecting the signal, though inferior to coherent detection design of satellite repeater station. The half rate convolutional code used for error correction is a non-redundant code which improves the error rate performance of the system without increasing the bandwidth of the system.