Ttransponder question #3

"Ross Richardson" wrote:
So it is OFF and not just STANDBY?


On King and Narco boxes, turning the thing to STDBY and back to
Mode A or A/C accomplishes nothing to "recycle" the transponder,
whatever that word is supposed to mean to the xpondr mfr! If the
box has a microprocessor (King, Garmin), turning it off and on
again may accomplish something, but doubtfully so.

I liked the earlier post about twiddling the 4 code knobs. On
older generation boxes with wafer switches which can crud up, that
just may work. Same as to jiggling the box in the tray, if just
Mode C is not working.

Fred F.

Be that as it may, I believe most transponders just
wait a static timeout amount (30-45 sec), whenever
transitioned from OFF to ON, even if you've
already had it on.

--- Jay


Is simply what they do. The microprocessor in the Kings invariably
sets the delay; Narco merely first charges up a capacitor which
takes about 30 sec. So, whether she needs "warm-up" or not, it
can't xmit until the light goes out.

Fred F.

Turn it on and then say "roger .. how's that?"


"Ross Richardson" wrote in message
...
What do you do when requested to "recycle" your transponder?

--


-------------
Regards, Ross
C-172F 180HP
KSWI

"OtisWinslow" wrote in message
.. .

Turn it on and then say "roger .. how's that?"


There's no point in asking an aircraft to reset a transponder that hasn't
been turned on. An aircraft that is instructed to recycle the transponder
is usually one that has previously supplied a good beacon target. When an
aircraft departs and no beacon target is seen where one should be seen the
instruction is usually "verify you're squawking NNNN".

"Steven P. McNicoll" wrote in message
link.net...
There's no point in asking an aircraft to reset a transponder that hasn't
been turned on. An aircraft that is instructed to recycle the transponder
is usually one that has previously supplied a good beacon target. When an
aircraft departs and no beacon target is seen where one should be seen the
instruction is usually "verify you're squawking NNNN".

A few years ago I got a call from tower after departure to check my
transponder. I don't remember his exact wording to me was to recycle or just
to turn it on, but I replied that I was slash x-ray and never heard from him
again...

-Greg B.
Still /X

TaxSrv wrote:

I liked the earlier post about twiddling the 4 code knobs.Â*Â*On
older generation boxes with wafer switches which can crud up, that
just may work.

My xponder was once transmitting an incorrect code; one digit was off. In
that case, I futzed with that one knob.

- Andrew

A few times while flying home to KBIL on a cold night I've been told
that approach isn't getting my xpdr. Is this likely somehow related to
the cold temp?

Also, what is atc's attitude toward me hitting IDENT, and asking if
that shows anything? (I know I'm leaving myself open here.)

skym wrote:
A few times while flying home to KBIL on a cold night I've been told
that approach isn't getting my xpdr. Is this likely somehow related to
the cold temp?

No, just your crappy transponder.


Also, what is atc's attitude toward me hitting IDENT, and asking if
that shows anything? (I know I'm leaving myself open here.)

Hitting ident won't change anything if the transponder isn't currently
working.

Gee, it's only about 20 yrs old!!

Excellent advice. There are enough ways of hanging
yourself without handing them one on a silver platter.

Quite. Plus ATC really doesn't want to bust you as long as no
separation was lost. They just want you back on altitude with the
minimum of fuss. The last thing they want you to do is own up to the
deviation on the tapes...