Mailing List flyrotary@lancaironline.net Message #30210
From: Buly <atlasyts@bellsouth.net>
Subject: Re: [FlyRotary] Re: Radio noise
Date: Tue, 14 Feb 2006 10:28:26 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ernest, All my grounds are screwed into a single distribution block with lots of screw terminals. If you mean joining all the radio grounds into a single "pig tail" , I have not done that.
Buly


On Feb 14, 2006, at 10:14 AM, Ernest Christley wrote:

Bulent Aliev wrote:

Here is a problem for you large brained engineers:
My radio is picking up noise from all the electrical motors including  the alternator. I took the alternator to the shop and checked "as  new". When I disconnect the coax from the radio, the noises stop,  which leads me to believe the antenna coax is picking up the  interference somehow. Guy at the airport suggested a clamp-on ferrite  filter on the coax. I bought one tonight, but did not have time to  test it.
The offenders are: fuel pumps, nose gear motor and alternator.
Any Ideas?


The fact that you have multiple antagonist leads me to believe that you might not have a common ground for your radios.  90% of radio noise problems are eliminated by simply bringing all avionics grounds to a single point.

--         ,|"|"|,               Ernest Christley     |
----===<{{(oQo)}}>===----     Dyke Delta Builder    |
       o|  d  |o          www.ernest.isa-geek.org  |

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