[TowerTalk] GDT sizing for feedlines

[VE6WZ Steve]

I found this which might help:
http://www.arrl.org/files/file/QEX_Next_Issue/2016/July-August/Hinkle.pdf

73, de Steve Ve6Wz 

Sent from my iPad

> On Oct 8, 2019, at 9:18 PM, Jeff Blaine <KeepWalking188 at ac0c.com> wrote:
> 
> I have a number of feedlines that I want to apply GDT out in the field 
> too.  This is to buy a bit of extra insurance on lightning events.
> 
> But I am wondering how to match up the GDT selection criteria with an 
> actual need.  There are a number of specifications on the GDT and I 
> think you want to pick the lowest voltage one that (allowing for 
> tolerance) would not be triggered by expected RF AC levels.  
> Unfortunately the spec does not say "if you are hanging this off your 
> feedline, use this rule of thumb to size our DC spec to your needs."
> 
> What "DC spark over voltage" would be the proper pick to go with say 
> 1500W @ 50 ohms (275 RMS volts)?
> 
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
> 
> 
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