Comparison table of advantages and disadvantages of teaching microphone
category
advantage
Disadvantages
Remarks
Fixed frequency FM FM wireless microphone (V segment and U segment)
Long launch distance and wide application range
Easy to crosstalk; troublesome maintenance (the connection between the microphone head and the transmitter is easy to be broken, and the frequency point must be stocked), bulky (especially the female teacher does not like it most); frequent battery replacement
Mostly used in professional occasions, entertainment venues, not for teaching applications.
Automatic frequency conversion point FM frequency modulation wireless microphone (ACT)
The transmitter and receiver search for a blank FM channel before working, and then lock a blank channel for transmission
Expensive; bulky; the transmitter has a long connection; the battery needs to be replaced frequently; the channel does not change after it is locked, and crosstalk is still prone to occur.
Mostly used in professional occasions, entertainment venues, not for teaching applications.
Pen-shaped hand-adjustable frequency conversion point FM FM microphone
Transmitter no connection
The volume and weight are still large; crosstalk is still easy to occur; the frequency points of the transmitter and receiver need to be manually adjusted, which is not easy to achieve "one division, one wheat"; frequent battery replacement is required.
For meetings, teaching applications.
Infrared microphone for teaching
No crosstalk; no connection for transmitter; battery charging method. Any transmitter can be matched with any receiver, which is easy to realize "one division, one wheat".
Antenna (sensor) installation is troublesome (generally needs to be in the center of the roof); hand blocking is easy to break the sound, there are many blind spots, hand-held transmitter should be careful, can not cover the infrared emission tube; still relatively bulky (about 100-190 grams); no diffraction Features.
For teaching applications. The infrared method can completely solve the crosstalk, but because of the linear transmission of infrared, it leads to a small coverage area, high requirements for the installation position of the receiving antenna (sensor), and it is easy to produce blind spots.
Digiin (Dijin) digital frequency hopping wireless microphone
No crosstalk; no connection to the transmitter; lithium battery charging method (it can be used for more than 8 hours at a full charge); any transmitter can be matched with any receiver, which is easy to achieve "one division, one wheat" The antenna is easy to install (the antenna can be installed on the podium to cover the entire classroom); the hand covers the sound without interruption (the transmitter can be held in any way); light (45 grams).
Radio diffraction ability is not better than FM FM.
For teaching applications. Between the FM frequency band and the infrared band, the two have both advantages; the use of pure digital frequency hopping transmission mode, automatically and quickly switch multi-channel communication, completely solve the problem of crosstalk.
Wooden Animal House
This quality 2 layer hutch provides a large cozy place for keeping small animals, especially rabbits.
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This spacious wooden rabbit cage is perfect for small pets.
Wooden Animal House,Wood Chicken Coop,Chicken Coop House,Wooden Hen House
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