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dee.whittington(at)gmail.
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 Posted: Sun Mar 27, 2016 6:55 pm Post subject: How do I stop audio hash noise generated by a new set of Nav |
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Hello, Bob, and all you AeroElectric forum participants. This is the first time I’ve posted in years, but I’ve got a problem I can’t solve. At Oshkosh 2015 I bought a set of the NavStrob LED nav/position light units. They directly replace the red and green wingtip nave bulbs, and the white rear position light. I cleaned out the sockets for all three locations and sprayed them with CorrosionX. Then inserted the NavStrobe units. When you turn on the Nav light switch once, all three burn with a steady light. Flip them off, and turn on again, and they flash like strobes. Slick. But, in my 1975 172L, when we turn on the COM radios, then turn on the strobes, there is a very unpleasant “hash” noise when the VOX gate opens as when you speak or a transmission comes in from someone else.
The designer of the NavStrobe unit suggests cleaning all the light sockets again. And if that doesn’t get rid of the hash noise (and it didn’t) install a choke coil.
So, any suggestions? And what size or type of choke should I buy and where do I install it? All suggestions welcome.
Dee Whittington
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enginerdy(at)gmail.com
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| Posted: Sun Mar 27, 2016 7:57 pm Post subject: How do I stop audio hash noise generated by a new set of Nav |
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It could possibly be ground noise. What is the wiring configuration for your nav lights and intercom?
--Daniel
| Quote: | On Mar 27, 2016, at 9:52 PM, DeWitt Whittington <dee.whittington(at)gmail.com> wrote:
Hello, Bob, and all you AeroElectric forum participants. This is the first time I’ve posted in years, but I’ve got a problem I can’t solve. At Oshkosh 2015 I bought a set of the NavStrob LED nav/position light units. They directly replace the red and green wingtip nave bulbs, and the white rear position light. I cleaned out the sockets for all three locations and sprayed them with CorrosionX. Then inserted the NavStrobe units. When you turn on the Nav light switch once, all three burn with a steady light. Flip them off, and turn on again, and they flash like strobes. Slick. But, in my 1975 172L, when we turn on the COM radios, then turn on the strobes, there is a very unpleasant “hash” noise when the VOX gate opens as when you speak or a transmission comes in from someone else.
The designer of the NavStrobe unit suggests cleaning all the light sockets again. And if that doesn’t get rid of the hash noise (and it didn’t) install a choke coil.
So, any suggestions? And what size or type of choke should I buy and where do I install it? All suggestions welcome.
Dee Whittington
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| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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