IS 7136 : 1973 Specification for Megaphones

1 Scope

1.1 This standard prescribes the general and performancerequirements of transistorized megaphones.

1.2 Methods of measurements and electro-acoustic requirementsand classification of type tests, acceptance tests and routinetests are not covered in this standard.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 2106 : Part II :1962 Environmental tests for electronicequipment:Part II Damp heat (cycling) test

IS 2106 : Part III :1963 Environmental tests for electronicequipment:Part III Cold test

IS 2106 : Part IV :1963 Environmental tests for electronicequipment:Part IV Dry heat test

IS 2106 : Part VII :1964 Envirmuneatal tests for electronicequipment:Part VII Bump test

IS 2106 : Part XI :1965 Environrnental tests for electronicequipment:Part XI Water spray test

IS 2106 : Part XIV :1964 Environmental tests for electronicequipment:Part XIV Vibration test