This doesn't really belong here but thought I'd share a funny story anyway
We give vfr flights that are not on FPL sequential squawks with each sector being assigned certain numbers ie 2604 to 2607.
One ATC having more than the usual amount of vfr in thier sector gave a very timid sounding pilot the squawk of 2608 without thinking and forgot that they were octaganal. After a few minutes of him trying to dial in this he replied " Sorry but my transponder seems to be broken cause it only goes to 7. Can you give me another number please." Apparantly he also asked the AMO to replace the Transponder when he landed.
I wonder if others have been caught out like this??