[Boatanchors] News story about risk of high altitude EMP

[Michael Zolno]

Yes and No.

My understanding of the problem is that the most susceptible items i.e. transformers, and there are a lot of them in tube gear, would fail the same way the power transformers in the mains distribution system due to the high induced voltages associated with EMP. We have enough of of time finding the correct transformers for restoration, and I know I don't have a stack of any of them (HV power, LV heater, various chokes, inter stage coupling types, audio, etc, etc, ad nauseam) stored safely away in a faraday cage t keep my tube gear on the air.

All my very best,

Mike WH6YH 

Sent from my iPad

> On May 2, 2015, at 1:46 AM, boatanchors-request at mailman.qth.net wrote:
> 
> That was an asinine thing to write.  Vacuum tube gear IS more resistant in 
> general to EMP than is solid state.  And generally discrete circuits are 
> more resistant than IC ones.  That part of the equation has absolutely nothing 
> to do with the power grid.  An EMP would likely take out any HT made in the 
> past 40 odd years, but not, for whatever good it would do anyone, sets like 
> the BC-611 or AN/PRC-10.
> 
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480