[time-nuts] lightening protection of a GPSDO system / optical isolated distribution amp
Chris Albertson
albertson.chris at gmail.com
Thu Nov 27 01:14:17 UTC 2014
On Wed, Nov 26, 2014 at 3:10 PM, Dr. David Kirkby (Kirkby Microwave Ltd) <
drkirkby at kirkbymicrowave.co.uk> wrote:
> On 26 November 2014 at 22:14, Chris Albertson <albertson.chris at gmail.com>
> wrote:
> > You CAN (almost) lightening proof your system.
>
> BUT if the almost is not quite enough, one could damage a lot of
> expensive test kit.
>
You can never be 100% but you can be nearly 100%.
The minimum is to follow the electrical code. That might cost $40 in
materials for a single story house. They allow bare aluminum grounding
wire which really reduces the cost.
After this minimum you have th think about the probability of a strike. If
you live in Orlando Florida then it might be 100% and nearly zero in other
places and then you ask what the radio equipment cost. I paid $18 for my
Motorola Encore GPS receiver.
The iron pipe mast if it also provides a good path to ground will take
almost all the current.
--
Chris Albertson
Redondo Beach, California
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