On Sat, Jun 20, 2015 at 12:53 PM, Rob Janssen pe1chl@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.