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| Forums | Crystal Radio Think Tank ** Advanced Forum | Tuner shielding | Post Reply | Send Topic To a Friend |
| Author | Topic |
| 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? Thanks. ................ 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)? Thanks, Bob .................. |
| 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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