Hiss with ECM-W1M Bluetooth microphone and a3000 camera

Sony website says that the a3000 and ECM-W1M are fully, 100% compatible. I bought the mic and the receiver doesnt turn on while on the camera.I try many things until I decided to try to record with the receiver on the camera, Blue light comes on and the receiver and the microphone paired with each other. I know that having to go through those hoops doesnt mean 100% compatibility. anyway.The problem is that the microphone has a very loud his when there isnt any sound. Example.You turn it on and it pairs. Before you begin to talk there is a loud his. Once I start talking the hiss goes away but comes back if I stop talking for a ittle while.Question to Sony is, are the Multi Interface devices all different? Sony sells them a all being the same and compatible. And should I return the microphone because the hiss is not going to get better???? Thank you.

Sounds to me as if you have AGC (auto gain control) switched on. If you are not familiar with AGC, what it does is boost the volume of the sound coming into the camera until it hears it. That is, it increases the gain of the sound. That is likely why when you speak the hiss goes away, but returns when there is only ambient sounds available which is much harder for the camera to 'hear' when compared with your voice or loud sound source such as an instrument for example.
I am not familir with the a3000, but you could look through your menus and see if you can switch it off or perhaps set the audio to manual.
Hope that helps.

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I have a Sony ECM-AW3 Wireless Microphone and I would like another receiver for this set up.

Are the receivers available seperate from the Mic? I have a IP camera that I stream to the internet and I would also like to record to a PC while I am streaming. Is it possable for to have two receivers, one for the camera and one on the PC to record?
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