Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Furnace motor hash Quick Fix  (Read 1415 times)
W1JKA
Member

Posts: 1619




Ignore
« on: March 08, 2013, 08:58:14 AM »

  Luckily my qth  is in a near free RFI environment,however when my furnace motor comes on there is a mildly annoying hash problem in my receiver.I have installed an AC line filter to my rigs PS supply but not much help.I was recently reading about Faraday cages so went out to my shop and got some 1/4  in. rabbit wire mesh,made a quonset hut shape with one end wall also mesh then slid this over the furnace motor with open end against furnace shell(a few slots cut out for piping).This has cut the noise down in the receiver to just a barely audible level.Apparently this mesh is working as a Faraday shield in reverse from the motor EMF.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!