48v dc power

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Mon Oct 16 19:23:04 2000

From: Joe <rigdonj_at_intellistar.net>
>>400ft, 10mhz clock for a S100 z80 system that was also distributed to
>>other boards on the bus. A modification to the termination of that
line
>>virtually made it disappear, the standard terminators didn't actually
>>match the impedence of the line making it antenna. Other hot one
>>was the Altair you could hear the 2mhz anywhere in the house
>>with the case on.
>
> Was that being ratiated via the AC power lines or the keyboard cable
or
>what?
>
> Joe


The altair just radiates.... All the jungle wire fromthe FP to bus.
There was no attempt to provide ground planes or decent grounding.

None of the systems I mentioned would have a "keyboard cable".

Allison
Received on Mon Oct 16 2000 - 19:23:04 BST