JRC NDR-91 - Frequency Stability; IF Rejection Ratio; Selectivity; Sensitivity

1)
But
FSK and
FAX are
option.
4)
Receiving
frequency
indication
{
Light
emitting
diode
for six-digit
numerical
display
(
I 0
MHz- to
100
Hz- digit)
5)
Tuning
method
Continuous
tuning
with MHz
knob,
UP/DOWN
switch
and TUNE
knob
of l}kHzl
rotation
(minimum
steP:
100 Hz)
6) Sensitivity
------_-_
Mode
Receivùg
-----
frequency
AIA
A3E
J3E
90-
199.9
kHz
2O
pY
or
less 60
pV
or
less
200-
1599.9
kHz
l0
pV
or
less
30
pV
or
less
1.6-29.9999
MHz
2
pY
or
less
6
pV
or
less
3
pV
or less
15çt
standard
signal
generator
is
directly
connected
to
the
antenna
terminal
S/N
20
dB,
Output 100
rnW,
Bandwidth
3 kHz,
400 Hz
30%
modulation.
Selectivity
-\!tenuation
BandwidÈ=--=-
6 dB
bandwidth
60
dB
bandwidth
6
kHz
4.4
kHz
or
more
l0
kHz
or
less
3
kHz 2-2.6
kHz
6 kHz
or
less
0.5
kHz
0.5-
1.0
kHz
3 kHz
or less
8)
Frequency
stability
I hour
after
l5-1rilute
preheating
t
10
x
l0-6
or
less,
but
under
the
condition
where
the
receiving
frequency
is 1.6
MHz or
more
in
the SSB
mode.
9)
Image
rejection
ratio
60 dB
or
more
)
l0)
IF
rejection
ratio
60
dB
or
n-lore
I l)
Spurious
response
60
dB or
more
12) Blocking
The
input
level
of
the
unwanted
signal
is more
than
l0 mV
which
suppress
the
output
level
of
the
wanted
signal
by 3
dB,
under
a condition
where
the
unwanted
signal
is
separated
by
2OkHz
or
more
from
the
wanted
signal
of l0pV.
(SSB
mode,3kHz,
AGC
ON)
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