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|golfguru||Posted - 2 October 2012 19:5 |
In the event of wanting/needing to shield a tuner from unwanted signals (AM or FM) would an aluminium shield do?, or would a ferrous shield be required?
Could a ferrous shield protect without the need for grounding?
Edited by - golfguru on 10/2/2012 8:23:17 PM
|Bob Weaver||Posted - 2 October 2012 20:56 |
Go with the aluminum.
In my experience, ferrous shields are only intended to protect against stray non-varying magnetic fields due to things like speaker magnets or the earth's magnetic field, and are used around things like CRTs.
On the other hand, a conductive shield made of copper or aluminum will keep out both alternating magnetic and electric fields caused by stray RF.
Edited by - Bob Weaver on 10/2/2012 8:58:12 PM
|golfguru||Posted - 2 October 2012 21:5 |
Could it be floating (not grounded)?
|Electronic Technician||Posted - 2 October 2012 22:44 |
Ground it to your radios ground. Any shield should be big or it will degrade Q.
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