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High-pitched feedback from B/Widow 200mW

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Old 01-27-2004, 03:13 PM
  #1  
friesianflyer
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Default High-pitched feedback from B/Widow 200mW

I have been having great success with my 200mW system, and have just taken it out of my 'plane to mount on my Heli.
However, now when I plug it all together, I get high pitched feedback.
If I make a sound then the feedback stops for a second, and then comes back. I have tried a different battery back, a different camera, and tried placing the components in different locations but nothing seems to work.

Any ideas?

Thank you.
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Old 01-27-2004, 04:15 PM
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Default RE: High-pitched feedback from B/Widow 200mW

It sounds like you have the TX mike too close to the speaker connected to the receiver when your testing.
Move it farther away and see if the noise stops.
Just a guess though.
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Old 01-27-2004, 08:51 PM
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Default RE: High-pitched feedback from B/Widow 200mW

I have noticed this myself while bench testing the system. I had to turn the volume on the tv all the way down. Unfortunately, due to the way the rx jacks are set up, I was unable to record any audio during my flight testing. My camcorder has a similar jack setup and I had only one Y connector handy to connect male to male. I have since fabricated one up and found the other one I knew I had. Amazing what you find when you clean off the work bench, aint it?
Forgot to mention that I was experiencing the feedback with the TV a good 8 feet or more away from the mic and the volume wasnt up very high. Probably due to the mic having too much gain and no other ambient sound for it to pick up.
ORIGINAL: friesianflyer

I have been having great success with my 200mW system, and have just taken it out of my 'plane to mount on my Heli.
However, now when I plug it all together, I get high pitched feedback.
If I make a sound then the feedback stops for a second, and then comes back. I have tried a different battery back, a different camera, and tried placing the components in different locations but nothing seems to work.

Any ideas?

Thank you.
[sm=confused.gif]
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Old 01-28-2004, 05:50 AM
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Default RE: High-pitched feedback from B/Widow 200mW

Thanks guys, you were both right. I was too close to the TV!

I usually just use my Camcorder which dosnt do the same thing.
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Old 01-28-2004, 10:11 PM
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Default RE: High-pitched feedback from B/Widow 200mW

The 200mw transmitter mic is incredibly sensitive when left in a quiet room. It damps down very well when on a plane.

I fly electric planes and when I turn the motor off to glide, I can hear the birds chirping in the trees below!

Bill
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Old 01-29-2004, 01:01 AM
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Default RE: High-pitched feedback from B/Widow 200mW

Thats pretty much what I figured. The feedback squeal would stop when I would snap my fingers at the mic then resume.
I figure that it wont happen when outside.
ORIGINAL: yb2normal

The 200mw transmitter mic is incredibly sensitive when left in a quite room. It damps down very well when on a plane.

I fly electric planes and when I turn the motor off to glide, I can hear the birds chirping in the trees below!

Bill
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