Testing of Portable Radios in a Fire Fighting Environment. | NIST

v INTRODUCTION 1 Table 1 Thermal Classes 1 Radio Testing 1 Figure 1 Diagram of Fire Equipment Evaluator (FEE) 2 Testing Procedures 2 Figure 2 Plot of Temperatures inside and outside of pocket 3 Figure 3 Radio inside turnout coat pocket with speaker/microphone 4 Figure 4 Pocket inside FEE for testing. 5 RESULTS 6 Testing with Radio in Turnout Coat Pocket 6 Table 2 Testing inside turnout coat pocket, air velocity 0.9 m/s 7 Table 3 Testing inside Turnout Coat Pocket, Variations 8 Testing of Radios without Turnout Coat Pocket Protection 8 Table 4 Thermal Class I – 100 oC for 25 min soak, velocity 0.9 m/s 9 Table 5 Thermal Class II – 160 oC for 15 min soak, velocity 0.9 m/s 10 Table 6 Temperatures beyond 160 oC, for 5 min soak, velocity 0.9 m/s 10 Speaker/Microphone testing 10 Figure 5 Radio Transmission Signal for Radio C during Thermal Class II Soak ..... 12 Table 7 External Speaker/Microphone Testing, velocity 0.9 m/s 13 DISCUSSION 13 CONCLUSION 14 REFERENCES 16 ACKNOWLEDGEMENT 17