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AF9FA

Joined: Tue, Jun 21st 2016, 18:56 Roles: N/A Moderates: N/A

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Portable laptop bonding Nov 29th 2018, 17:01 2 817 on 12/12/18

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Portable laptop bonding AF9FA on 29/11/18
I've been working with digital for some time. In my shack it functions famously. I took it portable a week or so ago. My laptop is a generic Dell, the interface is homebrew with total isolation (Transformers for audio and optocoupler for PTT) The waterfall looks BAD, I didn't even try to transmit. The radio (FT-857d) was being run from batteries as was the laptop. I'm guessing the 'noise' was coming from two completely separate power supplies playing together without a reference? Should the laptop be bonded to the radio chassis? In the shack I have a solid earth ground to everything.

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