Scientech Technologies Pvt. Ltd. Manufactures Noise Audio-Amplifier Trainer, ST2205. Scientech Technologies Pvt. Ltd. Is an ISO 9001:2000 certified company and is the manufacturer and supplier of test and measurement instruments. The Noise Audio-Amplifier Trainer is an analog communication trainer used to know the basic aspects of the subject. These trainers are self contained and student friendly having all the basic required controls and circuits on board. This trainer comes with a manual which describes different techniques of AM and FM Transmission and Detection. Student troubleshooting work is attached through switched faults in each Noise Audio-Amplifier Trainer which makes a whole training package of Analog Communication Technology. Followings are the salient features of this Noise Audio-Amplifier Trainer: