ATC failure in Memphis

JA_MORAN wrote:
what about backup systems
a Microwave point to point could work, how about different feeds from
different circuits? or a SAtellite dish...


Microwave only has limited range, so you need to build a network of
repeaters/towers. And both microwave and satellite can be affected by
bad weather (heavy snow, heavy rain).

true however on most areas there are tall structures, hills, or
moutnains where repeaters can be setup.

they said the failure was due to a phone circuit. all you would need to
do would be to microwave to a point up to 30 miles away where you can
then patch into an alternate circuit

the FAA already had a microwave network in place... if you drive by any
of the center facilities, you will see at least one microwave antenna

also most sectors have some military radar coverage. I know in Phoenix
thhere have been a few problems with center radar and the Luke Air force
Bace(KLUF) was able to assist.

JOHN


Nobody wrote:
JA_MORAN wrote:

what about backup systems
a Microwave point to point could work, how about different feeds from
different circuits? or a SAtellite dish...



Microwave only has limited range, so you need to build a network of
repeaters/towers. And both microwave and satellite can be affected by
bad weather (heavy snow, heavy rain).

JA_MORAN wrote:
true however on most areas there are tall structures, hills, or
moutnains where repeaters can be setup.

they said the failure was due to a phone circuit. all you would need to
do would be to microwave to a point up to 30 miles away where you can
then patch into an alternate circuit

the FAA already had a microwave network in place... if you drive by any
of the center facilities, you will see at least one microwave antenna

also most sectors have some military radar coverage. I know in Phoenix
thhere have been a few problems with center radar and the Luke Air force
Bace(KLUF) was able to assist.

JOHN


Nobody wrote:
JA_MORAN wrote:

what about backup systems
a Microwave point to point could work, how about different feeds from
different circuits? or a SAtellite dish...



Microwave only has limited range, so you need to build a network of
repeaters/towers. And both microwave and satellite can be affected by
bad weather (heavy snow, heavy rain).

The microwave back-up in the FAA was called RCL(Radio
Communication Link)before the FAA canned it. The dip ****s
in FAA management decided to kiss the ass of big business
and go with phone companies. The hell with air safety just
kiss that contractor ass and **** away that tax payer money.

Password wrote in
news
JA_MORAN wrote:
true however on most areas there are tall structures, hills, or
moutnains where repeaters can be setup.

they said the failure was due to a phone circuit. all you would need
to do would be to microwave to a point up to 30 miles away where you
can then patch into an alternate circuit

the FAA already had a microwave network in place... if you drive by
any of the center facilities, you will see at least one microwave
antenna

also most sectors have some military radar coverage. I know in
Phoenix thhere have been a few problems with center radar and the
Luke Air force Bace(KLUF) was able to assist.

JOHN


Nobody wrote:
JA_MORAN wrote:

what about backup systems
a Microwave point to point could work, how about different feeds
from different circuits? or a SAtellite dish...



Microwave only has limited range, so you need to build a network of
repeaters/towers. And both microwave and satellite can be affected
by bad weather (heavy snow, heavy rain).

The microwave back-up in the FAA was called RCL(Radio
Communication Link)before the FAA canned it. The dip ****s
in FAA management decided to kiss the ass of big business
and go with phone companies. The hell with air safety just
kiss that contractor ass and **** away that tax payer money.



So what?

You stil hve no idea what you are talking about.

Bertie

Password wrote:
Communication Link)before the FAA canned it. The dip ****s
in FAA management decided to kiss the ass of big business
and go with phone companies. The hell with air safety just
kiss that contractor ass and **** away that tax payer money.


I am not privy to the arguments used, but you should note that most
telcos have also replaced microwave links with optical fibre. For one
thing, it isn't affect by weather and it carries a hell of a lot more
data/voice than microwave can.

If the microwave equipment used by FAA was antiquated analogue stuff,
they would have needed to replace it with more modern (but still
limited) digital stuff and the costs might have been much higher than
that of using telco infrastructure.

Having said that, for a mission critical system (and a control tower
would be considered that), you would want two separate lines out of two
different locations in your building going to 2 different carriers. This
would prevent any single backhoe from cutting off your telecom
infrastructure.