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Desktop metal shielded PC case?
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May 21st 05, 09:47 AM
Paul Keinanen
Posts: n/a
On 20 May 2005 21:33:49 -0400,
(Al Dykes) wrote:
A "KVM" (remote "keyboard/video/mouse") box will allow you to put your
PC many feet away from your radio. Use this with an LCD screen.
What would that help, unless we are talking about at least one hundred
meters ?
The important thing is to keep the radiation away from the _antenna_.
For the direct connection of noise from the computer to the radio,
audio transformers can be used to connect the sound card to the radio
and an optoisolator for the PTT signal. This will eliminate any direct
galvanic connection between the systems, thus preventing noise
currents from flowing from the computer via the radio to the antenna
ground, causing all kinds of interference on the way.
As I said above, it is important to minimise the radiation from the
computer from reaching the antenna.
Paul OH3LWR
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