Question about Philips SBCMD110 Consumer Microphone

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I have designed and constructed a microphone amplifier circuit using LM301 with a line driver SSM2142 and a line receiver SSM2141.The circuit is supposed to pick up any voice/audio by the mic and send it via 100m Twisted Pair Cable to a PC for recording and analysis.I am using an omnidirectional Yodata Laptop Microphone,but i get nothing on the output.The circuit(amplification etc.) on its own is perfectly working but the audio/voice part is not,cracking my head.I have tried a ready-made Phillips microphone on my circuit and i works perfectly but the mic described for the job turns me down..Please help

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SOURCE: No Sound Coming out my Microphone

This same thing happened to me. All I did was plug the mic into my keyboard, turned the mic volume to max, and turned the mic on. Then, I grabbed the part of the mic where the cord goes in, and started turning it. I turned it left and started hearing noise come out of the mic. I kept on doing this, until sound came out of the mic. I did this, and now the mic works again. Hope this helps!

Posted on Dec 22, 2008

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Set up the aerials so that they are at a similar angle as the aerial on the transmitter.
Only use xlr balanced cables with good quality screening to connect the receiver to the mixer / amplifier. Keep signal cables well away form mains electricity cables as far as possible.
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The Shure SLX2 hand-held microphone has similar performance characteristics to the much-loved (cabled) Shure SM58 vocal microphone. It has a 'cardoid pick-up pattern' intended for close work - being spoken / sung straight into the top of the capsule at no more than about 8 inches from the mouth of the user- to minimise feedback and extraneous noise. If you double the distance between the mouth and microphone the sound level will drop four-fold so distance really matters.
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here

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http://www.mcamafia.de/nixie/ncp_en/ncp.htm

oke

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