Re: [HAPS-L] Faraday cages

[<amagid@xxxxxxxxx>]

Aluminum will probably work as well for the purpose as copper. (I said "copper mesh" because that is what we used in grad school in the late 60's) Copper has two advantages: (1) Cu has higher conductivity than Al (meaning lower offset voltages produced by the stray ground currents) and, (2) more secure electrical contact that carries the stray currents to ground and therefore also lower offsets. Also, don't ignore using the differential input to the oscilloscope. This eliminates much noise.

----- Original Message -----
From: James Murray <tritoniadiomedea@xxxxxxx>
Date: Tuesday, March 15, 2005 8:12 pm
Subject: Re: [HAPS-L] Faraday cages

> Aluminum screening is much cheaper than copper screening.  I am 
> told 
> that copper is better at shunting noise, not sure if that is true.  

> 

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