While all the "facts" about the voltage ratings of the gas discharge
protectors are correct - that is only true if those devices are new and
have not 'squashed' a number of events.
Please consider that this ham's problem with the Alpha-Delta protector
may be simply that the gas-discharge device in the protector has
absorbed enough energy (both from lightning and from RF) that its rating
is no longer the same as a new one.
Those devices do degrade after a number of "events"-
That is the reason why Alpha-Delta gas discharge devices are replaceable
- they do not last forever. Some other protection devices do not have
parts that are as easily replaceable, and you have to replace the entire
protector.
73,
Don W3FPR
On 2/25/2018 6:42 PM, j...@kk9a.com wrote:
Your 5KW example is RMS voltage and peak would be 707v. I am not sure how
much moderate SWR effect this value but clearly the 1000v Alpha Delta
discharge tube should be adequate for an Elecraft KPA-500 unless the SWR is
horrible.
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