NDB IAPs... going... gone

Michael wrote:
Couldn't you just use a local AM radio station?


Nah. Doesn't really give you the flavor of a real approach. The
transmitter is high quality, high power, and properly tuned so the
needle is rock steady on all but the worst receivers. Listening to the
transmission is not nearly as annoying as listening to those dits and
dahs. Makes it just too easy.

The funny thing about using AM stations is the US Government fielded the
old CONELRAD system to prevent the "enemy" from doing this during an
attack. That threat is minimal these days, NDBs are going away, but the
CONELRAD system keeps being revised. I hear several tests every week.

That's how your tax dollars are working for you.

Stubby wrote:

The funny thing about using AM stations is the US Government fielded the
old CONELRAD system to prevent the "enemy" from doing this during an
attack. That threat is minimal these days, NDBs are going away, but the
CONELRAD system keeps being revised. I hear several tests every week.

The old CONELRAD (CONtrol of ELectromagnetic RADiation) system involved
all AM stations retuning to either 640 or 12-something and switching on
and off. It became obsolete when other missile-lobbing nations
developed inertial navigation, in the '60s or so.

The modern EAS has about as much to do with the old CONELRAD program as
GPSes do with NDBs.

--
Eric Weaver PP-ASEL-IA Studio Engineer, KNGY SF

He worked in local radio, which he always used to tell his friends
was a lot more interesting than they probably thought. -- D. Adams

Eric C. Weaver wrote:

Stubby wrote:

The funny thing about using AM stations is the US Government fielded
the old CONELRAD system to prevent the "enemy" from doing this during
an attack. That threat is minimal these days, NDBs are going away,
but the CONELRAD system keeps being revised. I hear several tests
every week.


The old CONELRAD (CONtrol of ELectromagnetic RADiation) system involved
all AM stations retuning to either 640 or 12-something and switching on
and off. It became obsolete when other missile-lobbing nations
developed inertial navigation, in the '60s or so.

The modern EAS has about as much to do with the old CONELRAD program as
GPSes do with NDBs.


GPS's have a lot to do with NDBs. An approach-certified GPS is a legal
substitute for an ADF. and it's a heck of a lot easier to fly NDB
radials using GPS than ADF -- no math or card twisting required, just
get the bearing number right and then make the track number match it.

"xyzzy" wrote in message
...

GPS's have a lot to do with NDBs. An approach-certified GPS is a legal
substitute for an ADF.

It is in many cases, but an NDB approach isn't one of them.

In article et,
"Steven P. McNicoll" wrote:

"xyzzy" wrote in message
...

GPS's have a lot to do with NDBs. An approach-certified GPS is a legal
substitute for an ADF.

It is in many cases, but an NDB approach isn't one of them.

Which has got to be one of the more stupid concepts in aviation.

Steven P. McNicoll wrote:

"xyzzy" wrote in message
...

GPS's have a lot to do with NDBs. An approach-certified GPS is a legal
substitute for an ADF.


It is in many cases, but an NDB approach isn't one of them.



A distinction I did not know. thanks for the clarification!

xyzzy wrote:
Steven P. McNicoll wrote:

"xyzzy" wrote in message
...

GPS's have a lot to do with NDBs. An approach-certified GPS is a
legal substitute for an ADF.



It is in many cases, but an NDB approach isn't one of them.


A distinction I did not know. thanks for the clarification!

xyzzy:

It's a question your flying club's chief instructor likes to ask... so now you
know. :-)

Dave

Dave Butler wrote:

xyzzy wrote:

Steven P. McNicoll wrote:

"xyzzy" wrote in message
...

GPS's have a lot to do with NDBs. An approach-certified GPS is a
legal substitute for an ADF.




It is in many cases, but an NDB approach isn't one of them.


A distinction I did not know. thanks for the clarification!


xyzzy:

It's a question your flying club's chief instructor likes to ask... so
now you know. :-)

Let me get through the instrument checkride first, then I'll worry about
him!

--
"You can support the troops but not the president"
--Representative Tom Delay (R-TX), during the Kosovo war.