MULTIPLEX 
In this mode the control system must continue to 
function up to a distance of about fifty metres. 
 
6.  Flying the model 
These few steps are all you need to do before the 
first  flight.  Be  sure  to  keep  to  the  correct  se-
quence of switching on and off: always switch the 
transmitter  on  first,  and  only  then  the  receiving 
system; reverse the sequence when switching off. 
Before you launch and fly your model please read 
through the manufacturer’s notes; those concern-
ing safety and other warnings are particularly im-
portant. 
 
3. I
NTRODUCTION
 
 
These operating instructions are an integ-
ral part of the product, and contain im-
portant information and safety notes. 
Please store them in a safe place, and be 
sure to pass them on to the new owner if 
you ever dispose of the equipment. 
 
3.1  The SMART SX philosophy 
 
The SMART SX M-LINK is a compact, intelligent six-
channel beginners’ radio control system with a 
 
concept for the future! 
 
The  SMART  SX  intelligent  beginners’  radio  control 
system is fully compatible with other MULTIPLEX sys-
tems,  from  the  telemetry-capable  COCKPIT  SX  right 
up to  the high-end  PROFI TX  system. The same ap-
plies to the small ID receiver supplied in the set, which 
even works with the sophisticated PROFI TX transmit-
ter. 
 
However,  MULTIPLEX  offers  much  more  than  this: 
our  range  also  includes  a  carefully  considered,  con-
sistent  series  of  models.  Our  complete  RTF  (Ready-
to-Fly)  packages  contain  the  model,  factory-assem-
bled  and  almost  ready  for  the  air,  the  SMART  SX 
transmitter,  an  RX-5  M-LINK  ID  receiver, dry  cells,  a 
rechargeable  flight  battery  and  a  230  V  battery 
charger. Once you have unpacked the model, all you 
have to do is attach the wings, charge the flight pack 
and receiver  battery (if used), and  prepare the  trans-
mitter. When these few procedures are out of the way, 
there is nothing to stop you flying the model. 
 
The presence of the M-LINK ID 
receiver enables the SMART SX 
to detect the specific model, and 
automatically  activate  the  as-
sociated  settings  from  its  enor-
mous  reserve  of  model  memo-
ries:  fifty  independent  model 
memories  are  available.  All  compatible  MULTIPLEX 
ELAPOR® models from RR+ to RTF are programmed 
in  the  transmitter  as  standard.  Many  models  from 
other manufacturers  can be fitted  with  an  ID receiver, and 
this  makes  it  very  simple  for  the  intelligent  SMART  SX 
transmitter  to  detect  each  ID  receiver,  and  exploit  its  ad-
vantages.  The  overall  concept  of  transmitter  and  model 
expands with the demands of the model pilot. MULTIPLEX 
offers  a  complete  and  consistent  system  whose  compo-
nents are all compatible. 
 
Once you have gained initial experience with an RTF mod-
el, and wish to own and fly another aircraft, we recommend 
that you move on to a MULTIPLEX RR+ model. Our RR+ 
packages are just as complete as the RTF models, with the 
exception of the SMART SX M-LINK transmitter and battery 
charger,  as  you  already  own  these  two  components  from 
your  first  RTF  model.  You  can  use  them  again,  since  the 
transmitter  and  charger  are  fully  compatible  with  the  RR+ 
models. The transmitter detects all compatible RR+ models 
which are currently available. When new models come onto 
the market, you can load their settings into your transmitter 
using  the  free  MULTIPLEX  Launcher  software;  this  saves 
you the task of making the adjustments yourself. 
 
When your requirements have expanded to the point where 
you  are  keen  to  invest  even  more  time  in  the  hobby  of 
model flying, you can easily upgrade to an even more pow-
erful MULTIPLEX transmitter, e.g. a COCKPIT SX system, 
since all the receivers are compatible. This represents long-
term system compatibility, and saves you money. 
 
3.2  Features of the SMART SX 
 
The SMART SX M-LINK is a compact, intelligent six-chan-
nel beginners’ radio control system which includes ground-
breaking features, some of them patented. 
 
•  The  transmitter  exploits  its  intelligent  patented  model 
identification system to assign a specific model (i.e. its 
receiver)  to  a  pre-programmed  model  memory.  All 
MULTIPLEX  RR+  and  RTF  models  are  already  prog-
rammed in separate model memories. 
•  The  transmitter 
is  fitted  with  an 
aerial  incor-
porating  the 
newly  patented 
IOAT  technolo-
gy.  The  opti-
mised  direc-
tional  charac-
teristics  signifi-
cantly  enhance 
security, and take effective range far beyond the limits 
of vision. The 2.4  GHz aerial integrated into the trans-
mitter  case  is  always  directed  at  the  optimum  angle, 
and the radiated signal to the rear is minimal; all the ra-
diated  power  is  effectively  concentrated  in  the  flying 
sector. 
•  The small, light transmitter is very easy to handle, and 
can be used for many types of model. Its ergonomically 
efficient case is very comfortable to hold. 
•  Five fully proportional channels are available: elevator, 
rudder  and  throttle  plus  two  aileron  channels.  A