Verrrry good information.
Can you point to a recipe with schematic and parts fully specified?
If the antenna does take a direct hit, does it destroy the device?
I find it hard to imagine that a GDT can take everything a lightning bolt has to offer.
Or that the series caps could possibly survive.
Jerry
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On Tue, May 8, 2018 at 12:18 pm, Gordon Gibby wrote:
It is a very simple device.? ?A $3 gas discharge tube.? (I prefer the one with ratings to 20kA)
A series capacitor --- actually two in parallel probably to reduce inductance
A shunt resistor to drain off static so it doesn't build up and then Pop across the gas discharge tube.? ?
I think it might be brighter to put the shunt resistor across the ANTENNA side of the capacitor.? ?And you could even put another one across the Gas Discharge Tube.
Most people seem to think 100K ohm maybe 1 watt or more is reasonable.
?
We buillt these locally.? ?The ground connection (for lightninng) of course is the important part.? Shortest straightest biggest wire to the best ground you have.??
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