On Feb 15, 9:43*am, bpnjensen wrote:
On Feb 15, 9:08*am, Bob Dobbs wrote:

dave wrote:

http://www.mfjenterprises.com/pictures/MFJ-270.jpg

Looks like the gas discharge type I have.
Somewhere I heard someone say that they go shorted when hit,
like a MOV, but that seems counterintuitive and it seems more likely
that they would just go permanently open by out gassing.
What's your opinion on this?

My DX-Ultra has a proprietary gas discharge arc-plug in its core.
Alpha Delta says that after several years of significant static, it
can get weak and the antenna won't function as well. *Just to be anal,
I put in a new one about 6 years ago, and it's worked about the same
before and after and ever since.

-wrt- Gas Discharge Arc-Plug [G-DAP]
* If it's OK You Won't Notice It In Receive.
* If it's Blown You Won't Notice It In Receive.
* If it's Shorted You Will Notice It In Receive.

Note 99+% of the time if a G-DAP has done it's 'J-O-B' :
It is Blown -and- The Blown G-DAP is Useless.

Very seldom do G-DAP's Short; if at all.

-hint- One way that you might suspect that the G-DAP
is 'Shorted' is if the Paint on your Antenna Switch is
.. . . Burnt. ;;-}} ~ RHF