Electret mic and a dynamic input

[markmallan]

Hi I am using an Electret gooseneck mic and a switch to an electret headset which is connected to a Motorola Tetra radio and that all works fine with Electret.

I also want to use the same arrangement into a second radio that is a sailor set which is looking for a Dynamic input. (both there radios are housed in the same box for talking to a boat and a platform offshore) - Tried Dynamic into the Tetra but could never get sharp audio without noise.

Anyone any idea how I can connect in the same two electret mics so they can both be used on the Tetra that works with electret and the Sailor set that wants dynamic, both at the same time i.e. I'm looking to take the electret connection and spit it so I can have a dynamic output to use on the Sailor.

Cheers,

Mark

 

[c_mitra]

Electret microphones are usually high output whereas dynamic ones are usually low output. On the other hand, dynamic microphones are low impedance whereas electret microphones are mostly set with a built in one transistor network and they need a power source. Therefore electret microphones have three wire connectors (power, signal and ground) whereas dynamic ones have just two wires. Usually they are not interchangeable.