Matronics Email Lists :: View topic - Insulating washers [was: Radio noise when transmitting]

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

Insulating washers [was: Radio noise when transmitting]

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

jdubner

Joined: 17 Jul 2012
Posts: 35
Location: Independence, OR

Posted: Tue Mar 17, 2020 12:39 pm Post subject: Insulating washers [was: Radio noise when transmitting]

Robert L. Nuckolls, III wrote on 3/17/2020 10:07:



 	  Quote: 	
		    ?? ...  >     ground loop caused by mounting the microphone

  ?? jack to airframe without and insulating washer.

 

 https://tinyurl.com/t4kveee

 

  ?? ...


	


Yikes, those are some expensive pieces of phenolic!  Not in terms of other 

airplane parts measured in AMU ($1000 bills) of course but certainly in terms of 

dollars per ounce.



In the past a friend has turned some on his lathe from some phenolic stock I had 

on hand.  Like nearly all machining operations, the setup is time consuming but 

"production" is quite speedy.



I have also used 0.062-inch printed circuit board material (after cleaning off 

the traces) to fabricate a rectangular strip that would mount jacks through 

oversize clearance holes.  Image attached.



The latter technique works for 1/8-inch jacks where no insulated mount is 

available AFAIK.



--

Joe

RV-8A

Independence, OR

- 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

Audio_Panel_Jacks_2.JPG

Description:

Filesize:

1.73 MB

Viewed:

2785 Time(s)

_________________
Independence, OR

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-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