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the pi lot that the ELT is trans mitting,
avoiding a sit u a tion where an air craft
is fly ing with its ELT trans mitting.
1.5.2. G-SWITCH
The crash force ac tivation sen sor or
G-Switch is de signed to ac tivate with
a change of ve loc ity of 4.5 fps +/-0.5
fps both un der nor mal con ditions and
while be ing sub jected to 30 G’s of
cross axis forces. Fig ure 1-1 shows
the plot of time ver sus G Force that
the G-Switch must be qual ified to in
order to meet ED-62 ap proval cri te ria.
The FAA has al lowed the use of this
G-Switch un der TSO C126.
1.5.3. BATTERY PACK
The Bat tery Pack for all the C406-N
series ELT’s con sists of 4 “D” size
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Lith ium Man ganese Di oxide cells con -
nected in se ries. In an ef fort to in -
crease the safety of the bat tery pack,
a num ber of fea tures were de signed
into the bat tery pack. To pre vent the
cells from be ing charged, di odes are
con nected across each cell and fuses
are con nected to the out put.
1.5.4. RE MOTE CON TROL
The re mote con trol (cock pit panel
switch) pro vides “MAN UAL ON,”
“ARMED,” and “RE SET” modes. The
remote con trol wir ing be tween the con -
trol and the ELT is de signed so that
no com bi na tion of short cir cuits be -
tween the re mote con trol, mon itor(s),
as so ci ated wir ing and the air frame will:
· Inhibit the equip ment from be ing au to -
matically ac tivated.
· De ac ti vate the ELT af ter it has been ac -
ti vated.
· Result in ad di tional power drain so that
the ELT will not meet the min i mum Peak
Effective Ra di ated Power ( PERP) of 17
dBm or Equiv a lent Iso tro pic Ra diated
Power (EIRP) of 20 dBm through the 50
hour op er a tion pe riod at any of the
specified op er at ing tem per a tures (-20°
C to +55° C).
1.6. ARTEX Single In put
An tennas
The fol lowing ARTEX 406 an ten nas
are de signed to work with ARTEX
Sin gle out put 406 ELT’s in clud ing the
C406-N and C406-N HM. Con tact
ARTEX for avail ability of an tenna mod -
els listed be low.
1.6.1. Rod An tenna (Sin gle In -
put)
The 110-338 Rod An tenna (re fer to
Figure 1-2) is in tended for lower
speed air craft that do not ex ceed 350
knots TAS.
110-338 SPEC IFICATIONS
· Freq: 121.5, 243.0 & 406.028 MHz
· VSWR : 2.0:1 Max. for 121.5/243.0 MHz
1.5 Max. for 406.028 MHz
· Polarization: Ver tical
· Ra di a tion Pat tern: Omnidirectional
· Connector: BNC
1.6.2. Blade An tennas (Sin gle In -
put)
The 110-340 Blade An tenna (re fer to
Figure 1-3) is the ARTEX an tenna of
choice for use on air craft that do not
ex ceed 600 Knots TAS @ 25,000 Ft.
110-340 SPEC IFICATIONS
· Freq: 121.5, 243.0 & 406.028 MHZ
· VSWR: 2.0:1 Max at 121.5/243.0 MHZ
1.50:1 Max for 406.028 MHZ
· Polarization: Ver tical
· Ra di a tion Pat tern: Omnidirectional
· Connector: BNC
The 110-341 Blade An tenna (re fer to
Figure 1-4) is in tended for use on air -
craft that ex ceed 350 knots TAS.
110-341 SPEC IFICATIONS
· Freq: 121.5, 243.0 & 406.028 MHZ
· VSWR: 1.75:1 Max for 121.5/243.0
MHZ
1.50:1 Max for 406.028 MHZ
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· Po lar iza tion: Ver ti cal
· Radiation Pat tern: Omnidirectional
· Con nec tor: BNC
1.6.3. Whip An tenna
The 110-343 Rod/Whip An tenna (re -
fer to Fig ure 1-5) is in tended for lower
speed air craft that do not ex ceed 350
knots EAS.
110-343 SPEC IFICATIONS
· Freq: 121.5, 243.0 & 406.028 MHZ
· VSWR: 2.0:1 Max at 121.5/243.0
MHZ, 1.50:1 Max for 406.028 MHZ
· Polarization: Ver tical
· Ra di a tion Pat tern: Omnidirectional
· Connector: BNC
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FIG URE 1-2 ROD ANT 110-338 FIG URE 1-3 BLADE ANT 110-340
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FIG URE 1-4 BLADE ANT 110-341 FIG URE 1-5 ROD/WHIP 110-343
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C406-N OP ERATION
2.1. Operation
　
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