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Noise in the Microphones for the Sender of FM

 
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Noise in the Microphones for the Sender of FM
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eduardi
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Joined: 24 Jan 2005
Posts: 20

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Post Noise in the Microphones for the Sender of FM Reply with quote
I have a problem, always that I bind to the sender of fm, I have noise in the microphones, I think that they are harmonicas but
I have the certainty,I passed the microns all for balanced handles but the noise continues, always knows as can decide this problem? a filter passes basses will be good ideia?
Sun Aug 28, 2005 3:02 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
Hello!

First, if you want to connect a microphone you need
some kind of audio processor, at least a compressor.

Why? Audio level can vary over a very wide range and
you can overmodulate (when you for example scream
or blow air into mic or whistle). On the other hand, your
speech can appear quiet when you talk normally. You will
need audio processor and limiter here.

Second, make sure your microphone preamplifier is of
good quality. Balanced mic and preamp input are preferred
here. People use noise gates as well. Meaning when
there is no speech the preamplifier output is turned off
and there is no noise.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Sun Aug 28, 2005 3:24 pm View user's profile Send private message Visit poster's website
eduardi
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Joined: 24 Jan 2005
Posts: 20

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Post Reply with quote
When i put the microphones ON in the mixer i don´t have any noise,but when i put the transmiter ON i have noise in the microphones, i think is some electrical magnetism
Sun Aug 28, 2005 7:31 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
It might be RF radiation problem. Make sure:

1.) Your antenna is away from your audio gear
2.) Your transmitter is in metal enclosure and well shielded
3.) Your power supply is RF blocked

This might help.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Sun Aug 28, 2005 10:41 pm View user's profile Send private message Visit poster's website
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