Squawk code !!

[DaveG]

Just watching an entry on the screen that's got me confused and was wondering if anyone can answer what is happening.

The entry as no details other than:
Leveled
Mode S: 000000
Alt: 196  (only seen that once)
And a squawk code.

Trouble is the squawk code keeps changing every refresh, so far in 10 mins I've had:

0223, 2642, 6365, 0421, 2323, 3016, 2743, 4120

Sure there will be more, but what's going on, why so many code changes on this line?

There is a base close by,  RNAS Culdrose but its all closed for night and nothing is moving or open.  Only say this because of the one Alt at 196 I got.

Any idea's!!!

[Roadrunner]

Could it be a test message being transmitted from a local site?

[Allocator]

There is quite a comprehensive thread regarding the 000000 Mode S code on the "other" forum.  See here:

http://www.kinetic-avionics.co.uk/forums/viewtopic.php?t=5691&highlight=000000

[DaveG]

cheers, just been reading it, think I'll just forget about it all for now, lol.