35
REGULATORY INFORMATION
The following Table summarizes the technical details of the
WidexLink technology as it is implemented in the Melodia™ hear-
ing aids.
Hearing aids RC remote
control
TM-DEX
Bluetooth* -
NOAHlink
Antenna
type
Inductive an-
tenna
Inductive
antenna
Inductive an-
tenna
Embedded
ceramic an-
tenna
Antenna
dimen-
sions
Ø1.8 mm,
L - 4.85 mm
Ø8 mm,
L – 20 mm
Ø6 mm,
L - 8 mm
NA
Modula-
tion
FSK
FSK
FSK
FHSS/GFSK,
π
/4 DPSK, 8
DPSK
Magnetic
Field
Strength
(at 10 m
distance)
-54 dB
μ
A/m -13
dB
μ
A/m
-26 dB
μ
A/m NA
Output
power
(EIRP**)
29 pW
21 nW
1.2 nW
+4dB re.
1mW
Range
< 1 m remote
unit to hear-
ing aid
< 30 cm be-
tween hear-
ing aids or
Hearing aid
to TM-DEX
< 1 m re-
mote unit
to hearing
aid
< 30 cm be-
tween hear-
ing aid and
TM-DEX
< 10 m be-
tween PC
and
NOAHlink
Center fre-
quency
10.6 MHz
10.6 MHz
10.6 MHz
2.4 GHz
regulatorY information