Avionics News March 2018 - 19

Remote-mounted avionics offer solutions capable
Truly revolutionary, the GNS series combined into
of meeting the dream-panel plans of the owner while
a single box the 760-channel VHF communication
making more flexible mounting choices - and even
radio, the 200-channel VHF navigation radio, both
help preserve panel space by linking controls to the
VHF receivers indigenous to instrument landing system
PFD and MFD, eliminating the need for space devoted
receivers - localizer and glideslope - and a new IFRto switches and control knobs.
capable global positioning system receiver.
Remotely mounted avionics equipment isn't new; for
A color multifunction display added even further to
years, functions such as glideslope receivers, some
the revolutionary nature of the GNS series of devices.
ADF parts and autopilot controllers existed as add-on
The only downside of these boxes - and some
devices mounted in back.
competing pieces of avionics that followed - was their
But unlike those remotesize. The larger GNS 530 took
mounted avionics of our analogabout as much space as two
avionics past, today's remotely
conventional VHF nav/comm
mounted digital options need no
radios, which meant some panels
REMOTE-MOUNTED
separate control head like many
could only fit the smaller GNS
AVIONICS OFFER
remotely mounted options of old.
430.
SOLUTIONS CAPABLE
Realizing the maximum
Nonetheless, Garmin sold tens
potential in remotely mounting
of thousands of the GNS series,
OF MEETING THE
many avionics boxes even holds
since supplanted by the GTN
DREAM-PANEL PLANS
promise for wholly eliminating
series - with an even larger face
OF THE OWNER WHILE
both some of the boxes and the
for the GTN 750, the replacement
MAKING MORE FLEXIBLE
controls to manage their operation.
for the GNS 530.
MOUNTING CHOICES - AND
The reality that the depth of
EVEN HELP PRESERVE
Glass-panel appeals:
these all-in-ones became an issue
Pilots like the many
for some smaller aircraft helps
PANEL SPACE BY LINKING
levels of benefits
spur a move toward remoteCONTROLS TO THE PFD
For much of aviation's history,
mounted avionics.
AND MFD, ELIMINATING
panel equipment hearkened from
The revolution in PFD
THE NEED FOR SPACE
the analog days of old, first with
technologies followed by a
DEVOTED TO SWITCHES
vacuum tubes, then transistors,
few years, bringing to panels
AND CONTROL KNOBS.
and finally, digital processors.
new PFD options - capable
As the underlying technology
of replacing the entire "steam
changed, the functions available
gauge" six-pack of flight
changed relatively little - at least
instruments. Some combined an
until the arrival of the digital revolution a couple of
MFD within the same bezel of an MFD.
decades back.
But modernizing a panel began to be an exercise in
With the arrival of digital processors, digital-tuning
space management - panel-space management, that
and digital-display technologies, engineers quickly
is. And the ability to mount some avionics remotely
moved to develop new features and functions and
while retaining at-the-instrument panel control gained
combine into one box the functions once needing
momentum.
multiple devices - such as localizer and glideslope
Another factor contributing to the growth and
receivers. Of course, while many devices kept the same
popularity of remotely mounted avionics grew out
dimensions, the space occupied within their boxes
of the experimental-aircraft movement. Untethered
typically grew - the better to facilitate plug-and-play
to conventional design standards, designers of many
replacement processes.
experimental aircraft embraced the remote-mounted
Next came a wave of new features and further consolidation
movement as a step toward saving weight and space in
of multiple devices into single boxes. Arguably, Garmin
aircraft designed for homebuilders.
International won this contest for first breaking ground in this
Continued on following page
trend with the GNS 530 and GNS 430.
avionics news

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march

2018

19



Table of Contents for the Digital Edition of Avionics News March 2018

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Avionics News March 2018 - 1
Avionics News March 2018 - No label
Avionics News March 2018 - Cover2
Avionics News March 2018 - 1
Avionics News March 2018 - 2
Avionics News March 2018 - 3
Avionics News March 2018 - 4
Avionics News March 2018 - 5
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Avionics News March 2018 - Cover3
Avionics News March 2018 - Cover4
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