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Any issues with VHF interference?

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rv10rob(at)gmail.com
Guest

Posted: Thu Mar 16, 2017 7:41 pm Post subject: Any issues with VHF interference?

I have an issue where my GS needle moves erratically when I'm flying an ILS in wet clouds or rain. I'm guessing that means I have a static problem (though the localizer and comm radios are fine). Anyone have a similar issue and/or recommendations? I heard of a few people installing static wicks, but it doesn't seem to be too common. Thanks..

-Rob





-- 

Rob Kochman

RV-10 Flying since March 2011

 Woodinville, WA

 http://kochman.net/N819K

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jdriggs49(at)MSN.COM
Guest

Posted: Thu Mar 16, 2017 8:15 pm Post subject: Any issues with VHF interference?

You could be getting "bleed over" from either lightning or more likely static being generated in the clouds from the movement of the moisture (raindrops). 

 When I was in grade school I made a static electricity generator for a science project using simulated raindrops to generate the electrical charge. Basically just have continuously dropping water droplets thru two brass rings. It  would eventually buildup enough charge to jump a 3/4" gap. Very high voltage but not much amps. It sure would make a lot of RFI noise however.

 If static wicks aren't helping then I'd consult with a radio shop or two. You may need some frequency filters.

 

 Sent from my iPad

 

 On Mar 16, 2017, at 10:48 PM, Rob Kochman <rv10rob(at)gmail.com (rv10rob(at)gmail.com)> wrote:

 

 

  	  Quote: 	
		     I have an issue where my GS needle moves erratically when I'm flying an ILS in wet clouds or rain. I'm guessing that means I have a static problem (though the localizer and comm radios are fine). Anyone have a similar issue and/or recommendations? I heard  of a few people installing static wicks, but it doesn't seem to be too common. Thanks...

 

 

 -Rob

 

 

 

 

 -- 

  Rob Kochman

 RV-10 Flying since March 2011

 Woodinville, WA

 http://kochman.net/N819K

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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:

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flying-nut(at)cfl.rr.com
Guest

Posted: Fri Mar 17, 2017 3:56 am Post subject: Any issues with VHF interference?

Been a long time since I heard of that       problem!Â  Solutions typically point to grounding problems .....       coax connections or antenna installation .... or both.Â  

       Linn

       

       On 3/16/2017 11:36 PM, Rob Kochman wrote:

     

      	  Quote: 	
		                  I have an issue where my GS needle moves erratically when           I'm flying an ILS in wet clouds or rain. I'm guessing that           means I have a static problem (though the localizer and comm           radios are fine). Anyone have a similar issue and/or           recommendations? I heard of a few people installing static           wicks, but it doesn't seem to be too common. Thanks...

         

         

         -Rob

         

         

         

         

         -- 

                    Rob Kochman

             RV-10 Flying since March 2011

           Woodinville, WA

           http://kochman.net/N819K

         

       

       

No virus         found in this message.

         Checked by AVG - www.avg.com

         Date: 03/16/17

- The Matronics RV10-List Email Forum -

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Fri Mar 17, 2017 6:19 am Post subject: Any issues with VHF interference?

I would definitely explore the grounding/shielding integrity before trying static wicks. My Mooney has a cat whisker VOR antenna on top of the tail, with no static wicks, flying almost identical approach speeds to the RV-10, and has never had a glideslope or VOR problem in any precip. While I generally fly approaches for real at 90-100 kts, I have practiced upwards of 150 kts without any receiver problems.

Haven't had my RV in enough precip to find such an issue..haven't done any real IFR in it yet, but my two Archer wingtip VOR antennas seem to be performing very well.



-sent from the I-droid implanted in my forearm

 

On Fri, Mar 17, 2017 at 4:54 AM, Linn Walters <flying-nut(at)cfl.rr.com (flying-nut(at)cfl.rr.com)> wrote:

 	  Quote: 	
		                     Been a long time since I heard of that       problem!Â  Solutions typically point to grounding problems .....       coax connections or antenna installation .... or both.Â  

       Linn

       

       On 3/16/2017 11:36 PM, Rob Kochman wrote:

     

      	  Quote: 	
		                  I have an issue where my GS needle moves erratically when           I'm flying an ILS in wet clouds or rain. I'm guessing that           means I have a static problem (though the localizer and comm           radios are fine). Anyone have a similar issue and/or           recommendations? I heard of a few people installing static           wicks, but it doesn't seem to be too common. Thanks...

         

         

         -Rob

         

         

         

         

         -- 

                    Rob Kochman

             RV-10 Flying since March 2011

           Woodinville, WA

           http://kochman.net/N819K

         

       

       

No virus         found in this message.

         Checked by AVG - www.avg.com

         Date: 03/16/17

- The Matronics RV10-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?RV10-List

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

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