[Ronja] Optical Filter for better reception

Arun Krishnan arunk at speedpost.net
Mon Mar 24 13:59:55 GMT 2008


Hi Deepak,

Cheap optical filters have been tried and the result has been worse, not
better. Cheap colour filters remove more useful bandwidth than noise.
Any better and the result suddenly is not worth the investment.

Regards,
Arun


----- Original message -----
From: "Deepak Mishra" <xask.linus at gmail.com>
To: "Twibright Ronja" <ronja at lists.pointless.net>
Date: Mon, 24 Mar 2008 18:42:37 +0530
Subject: [Ronja] Optical Filter for better reception

Hi,
I was wondering is adding an optical filter in the Rx module would help
?
Inserting a band pass optical filter, after the lens, which would allow
only
a range of frequencies
emitted by the LED to pass through,
I think as a result of reducing the noise, it should increase the range.
Has anyone tried this ?

Cheers,
Deepak



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