On Sat, Jun 20, 2015 at 12:53 PM, Rob Janssen <pe1chl(a)amsat.org> wrote:
Do you have valid "callsign change" tables
in the US?
Yes. The FCC publishes a few set of tables in each type of license
(common carriers, broadcasters, amateurs, business, etc..).
One is a list of callsigns and dates attributing to start and end
effective dates along with last change
Another is a list of actions attributed to a callsign. ie: callsign
changes, revocations, expirations, class upgrade, etc..
And another is the mailing/physical address table.
It gets a little convoluted because for example, I have a vanity call.
But my original callsign is still active because my vanity call is
tied to it. Therefore, I have two callsigns but technically should
only operate with the one. Tho, come to think of it, I should be able
to operate with either - (anyone got a Part 97 rule regarding this?).
I'd imagine it's the same way in other countries where some operators
have two licenses for whatever reasons. Then there are trustee
stations like W1AW who technically is attributed to one particular
trustee with a valid license - those are easy enough to find.
And not everyone changing their callsign notifies me.
And there in lies the problem. Scale it up globally and you can see
why we would need to force people to check in from time to time.