The speaker microphones have become a vital two way radio accessory solution for users who need to talk and listen without removing the radio from their belt or carry case. A basic speaker microphone combines a speaker, microphone and Push-To-Talk button (PTT) in a compact device with a clip to hold it and a cable to connect to the portable radio or mobile radio.
Due to the advantages of the speaker microphone , more and more radio users adopt the speaker microphone combo on their radio communication. Therefore the safety of users is a top priority for manufacturers who provide radio communications. Meanwhile clear, sound and concise audio is critical to worker safety. Thus the microphones should be tested strictly at factory after mass production.
What tests will be carried for a factory/manufacturer to guarantee the perfect performance of the radio microphones? Now let’s take a look.
High/low Temperature Test. Nowadays more and more people take two way radio as a main option in outdoor areas especially for outdoor adventure. Some adventurers will take the walkie talkie during the hiking trip or mountain-climbing which encounters contrasting temperature difference. The temperature test assures the speaker microphone functions normally at severe weather. It will be placed in environmental chamber for 24hours with temperature of both -40℃ and 70℃.
PTT Life Test. Testing the button lifetime with Keystroke Tester to guarantee the normal function of PTT button after long-time pressing repeatedly. The PTT life reaches over 40,000 times after testing.
Cable Bending Test. Raw materials, like copper are expensive and increasingly rare. This also affects the cables used, as they become thinner and thinner. Using the bending test, we verify the mechanical strength of a cable and strain relief.
Waterproof Test. The waterproof two way radio will erase your worry about dropping it in the ocean or getting caught in a rain-storm. It is essential if you’re out kayaking or fishing in a remote area. Same as the speaker microphone. You might place your walkie talkie inside the carry case and communicate with other guys via the remote speaker microphone. The waterproof feature will save your microphone. The hand mic will be soaked in a water tank with 1-meter deep for half an hour.
Drop Test. Heights of drop: 1.5m. Time of drops: 10 times.
Salt Spray Test.
Salt Mist: 5% ±1,
PH=6.5-7.2,
chamber temperature:33.3~37℃,
exposure period:24 hours
Requirements: no rust on the clip and screw.
Pulling Test.
Plug Number Test. No scratches at all and the plug works normally after 5000 times repeatedly.
Microphone Test.
