"Squawk standby"

"Roy Smith" wrote in message
...
In article et,
"Steven P. McNicoll" wrote:

"Roy Smith" wrote in message
...

I had a wierd thing happen a week or so ago.

We were VFR, and called up POU tower (class D satellite of NY
Approach), 10 southwest landing with blah, blah. The tower
controller told us to squawk standby. After confirming that
instruction, we did so and a little while later he told us to squawk
vfr.

When we asked what that was all about, he said it was for radar
identification. A little while later, he did the same thing to
another
incomming flight.

Any idea what might have been going on? The only thing I can think of
is some sort of equipment malfuction which let him see that there was
a
secondary return, but not read the code or see idents. Is that
possible?


What code were you on when you initially called?



1200.

Happens 'round here all the time. He sees a 1200 squawk and thinks it is
you. You go to stand-by and you disappear from radar. He now knows it is
you when you squawk 1200 again. Seems to always happen at Class D airports.
Can they assign unique Xponder codes? Seems to me they can't.