KING KR 21 - Equipment; Marker Beacon

KING
KMA
20/KR
21
MARKER BEACON
RECEIVER/
ISOLATION AMPLIFIER
SPECIFICATION
CHARACTERISTIC
OUTPUT: (Cont)
Factory
adjusted
to
1.
OVRMS
at the isolation
amplifier
input.
DESIGN:
All solid
state.
No moving
parts.
FREQUENCY:
Crystal-controlled
at 75MHz.
SENSITIVITY:
Low:
2,
000µv hard
for
lamp
threshold
High:
500µv
hard for
lamp
threshold
SELECTIVITY:
6db at ±10KHz
Min.
60db at 575KHz
Max.
AGC
CHARACTERISTICS:
Less than 6db
variation in
audio output
level
when
the
rf level
is varied
from
lamp
thresh-
old to
200,
000µv.
ISOLATION
AMPLIFIER
-
KMA
20
TSO
COMPLIANCE:
TSO C50b Env.
Category
DACAAAX.
CONTROL: Panel mounted
equipment.
All operating
controls are on
the front panel
of
the
unit.
DUTY
CYCLE:
Continuous.
INPUTS:
Standard
model
accomodates
two
transceivers
and four
external
receivers,
International
model
accomodates
three
transceivers
and
four
external
receivers.
INPUT
IMPEDANCE:
500
ohms.
INPUT
ISOLATION:
40db
between
input
channels.
INPUT
SELECTOR SWITCHES: Each
isolated
audio input has
three independent
terminations:
SPEAKER, OFF
or
PHONE.
INPUT
MUTING:
Audio
Muting
is
40db
or
better
when a
trans-
mitter
is
keyed.
Rev.
2,
June,
1076
Page
1-3