supply of analog and digital communication lab equipment items electronics communication engg . deptt . at govt . engineering college baran , laying and jointing pvc pipe . heading , amplitude modulation transmission and reception trainer , 3 ghz spectrum analyzer with spectrum analyzer application demonstrator board and software for simulation of waveform in frequency domain , frequency modulation & demodulation trainer , training system for pam , ppm , pwm and line coding , training system for study 4 channel tdm -pam , training system for study of pcm modulation & demodulation , training system for delta & adaptive delta modulation & demodulation , training system for study of 4 channel pcm multiplexing & de-multiplexing in telephony system , training system for ask , fsk , bpsk , dbpsk , 40 mhz digital storage oscilloscope , function generator