Telephone Receivers - RT 904

Weight  of   RT-904   35 gms
Sensitivity of RT-904 98 ± 2 dB (SPL at 1 KHz. at 60 m.v)
Resistance of RT-904 140 ± 20%
Frequency Response The frequency relative to the 1Khz response shall lie between the upper and lower limits
RT 2000
Product test set-up's and tests conducted
A Modern computer testing set up is adopted in final testing of products frequency response and 100% testing method is adopted.
Environment test is done on sample pieces in each batch of production.
The following tests are Conducted:
1 Impedance test
2 Drop test
3 Frequency Response test
4 Environment test
Stringent pass conditions appl
RT 904