Matronics Email Lists :: View topic - radio problemradio problem

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

radio problemradio problem

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

georgewells(at)adelphia.n
Guest

Posted: Fri Nov 03, 2006 10:39 am Post subject: radio problemradio problem

I have about the same problem but it is with my  compass !!

 If  the compass is located anywhere except  above the radio stack it works fine. If I mount it in the center on the panel  cover above the radio stack the readings go goofey !! This is with the  radios powered up or off ?

 Any suggestions for a fix ? I was thinking of a  grounded piece of copper screen above the stack.

 Thanks

    [quote][b]

ruebd(at)skymail.csus.edu
Guest

Posted: Fri Nov 03, 2006 11:03 am Post subject: radio problemradio problem

Your problem is most likely an electromagnetic one, and as such, copper won’t help much.  You will need to use mu metal, which is a good magnetic conductor.  A radio shop should be able to supply this.   Plain old steel might solve it, and it won’t need to be real thick, so try some thin stuff first, before you do a permanent install.    

Remember that the compass is a very sensitive magnetic instrument, so anything with a permanent magnetic field needs to be as far away from it as practical, but shielding is the way to keep the field from being a problem when this cannot be done.    

   

Duane Rueb   

   

         

  

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of George Wells(at)adelphia.net

 Sent: Friday, November 03, 2006 10:38 AM

 To: kitfox-list(at)matronics.com

 Subject: Re: radio problemradio problem  

  

     

[b]I have about the same problem but it is with my compass !![/b]  

    

[b]If  the compass is located anywhere except above the radio stack it works fine. If I mount it in the center on the panel cover above the radio stack the readings go goofey !! This is with the radios powered up or off ?[/b]  

    

[b]Any suggestions for a fix ? I was thinking of a grounded piece of copper screen above the stack.[/b]  

    

[b]Thanks[/b]  

   	  Quote: 	
		     	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4 	  Quote: 	
		   	
5 	  Quote: 	
		   	
6 	  Quote: 	
		   	
7 	  Quote: 	
		   	
8 	  Quote: 	
		   	
9 	  Quote: 	
		  	
0 	  Quote: 	
		  	
1 	  Quote: 	
		  	
2 	  Quote: 	
		  	
3 	  Quote: 	
		  	
4 	  Quote: 	
		  	
5

      [quote][b]

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Fri Nov 03, 2006 11:16 am Post subject: radio problemradio problem

At 10:37 AM 11/3/2006, you wrote:

 	  Quote: 	
		  Any suggestions for a fix ? I was thinking of a grounded piece of copper 

screen above the stack.


	


         I had this problem and it was caused primarily by the two panel 

supports running aft from the windshield cross braces. They were heavily 

magnetized. (Apparently arc welding causes the 4130 steel used in our 

airframe to magnetize.) I used Sacramento Sky Ranch's rental degauss kit to 

degauss the whole area and have had no problems since. I removed my panel 

to do it since I wasn't sure whether the avionics would survive the degauss 

field.

         I never tried shielding. I would ask the AeroElectric list on 

Matronics. That's where I've seen the most discussion regarding shielding.

Guy Buchanan

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

ruebd(at)skymail.csus.edu
Guest

Posted: Fri Nov 03, 2006 12:58 pm Post subject: radio problemradio problem

Yes, the degaussing is a great idea, and as you did, it is good to

remove the panel first.  If you can't do that, then magnetically shield

the items most likely to be affected, such as the compass.  The airframe

should have a neutral magnetic field, so as not to influence the compass

too much.  This is a very good thing to do before finishing our

airplanes.  



Duane Rueb



--

barry(at)pgtc.com
Guest

Posted: Fri Nov 03, 2006 1:59 pm Post subject: radio problemradio problem

George, don't mount the compass above the radios  unless it is a dry compass. Mine leaked on the com and it cost $300 to get it  fixed besides the problem of coming back in with the handheld.  I'm buying  a vertical card, dry compass.  However, the compass worked well there, it  was dead on everytime I checked it with the rose.... which was about the only  time I ever looked at it.

  

 Barry West

 [quote]   ---

ddsyverson(at)comcast.net
Guest

Posted: Fri Nov 03, 2006 2:27 pm Post subject: radio problemradio problem

Barry & all,



Vertical card compass...... exactly what I have been hoping & trying to get. 

Spruce seems to have been out of stock for the last 100 years (ok - just one 

year). Local aircraft wrecking yard seems to be out.  Any idea where a person 

can actually GET a vertical card compass?



Thanks,



Dave S

St Paul MN

M-7 nosedragger 



Do Not Archive



On Friday 03 November 2006 3:58 pm, Barry West wrote:

 	  Quote: 	
		   George, don't mount the compass above the radios unless it is a dry

 compass. Mine leaked on the com and it cost $300 to get it fixed besides

 the problem of coming back in with the handheld.  I'm buying a vertical

 card, dry compass.

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Fri Nov 03, 2006 2:42 pm Post subject: radio problemradio problem

http://www.cfisher.com/

  link  on left side of page about 4 down   "compass swing ."



That a little program that makes a compass card I use.

Once you plug in the numbers just print on sticky paper.

Dave





---

_________________
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/user/kitfoxflyer
Hundreds of Kitfox Movies
Most viewed Kitfox on youtube
Most popular on youtube
Highest rated on youtube

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri Nov 03, 2006 4:21 pm Post subject: radio problemradio problem

Na....Put the compass somewhere  where it will work.

  

  

 

Noel [quote]   

   --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri Nov 03, 2006 4:27 pm Post subject: radio problemradio problem

Probably something ferrous  under the panel cover or in the stack itself.  I.e.  the cases or  mounts for the avionics themselves.  I don't think copper, even  grounded screens magnetic waves.  It is a good thing to notice  though.

  

  

 

Noel [quote]   

   --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri Nov 03, 2006 4:46 pm Post subject: radio problemradio problem

Funny thing about compasses....  They are the first instrument your plane

should have ......  And the last one you will ever look at.



Noel



[quote] --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Fox5flyer
Guest

Posted: Sat Nov 04, 2006 2:25 pm Post subject: radio problemradio problem

Thanks Dave.  Good contribution.

Deke Morisse

List Janitor



do not archive



[quote]

 http://www.cfisher.com/

   link  on left side of page about 4 down   "compass swing ."



 That a little program that makes a compass card I use.

 Once you plug in the numbers just print on sticky paper.

 Dave





 ---

smokey_bear_40220(at)yaho
Guest

Posted: Sat Nov 04, 2006 10:07 pm Post subject: radio problemradio problem

--- Noel Loveys <noelloveys(at)yahoo.ca> wrote:



 	  Quote: 	
		   Probably something ferrous under the panel cover or

 in the stack itself.

 I.e.  the cases or mounts for the avionics

 themselves.  I don't think

 copper, even grounded screens magnetic waves.  It is

 a good thing to notice though.


	


 	  Quote: 	
		   Noel


	


I agree.  Grounded copper only works on moving

magnetic fields, like that produced by alternating

current, not stationary magnets, like in the ferrous

metals.



Kurt S.

 

Low, Low, Low Rates! Check out Yahoo! Messenger's cheap PC-to-Phone call rates 

(http://voice.yahoo.com)

kirkhull(at)kc.rr.com
Guest

Posted: Sat Nov 18, 2006 8:07 pm Post subject: radio problemradio problem

I finally had a chance to try out another antenna and it solved the problem.

Thanks everyone



--

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum