BK Radio
Page 4-3
maintenance
receive setup
Connect an RF signal generator to the radio antenna input. Set the generator FM modulation to a
frequency of 1 kHz and a deviation of ±3 kHz for wide band measurements, or ±1.5 kHz for narrow
band measurements. Measurements should be made across an 8Ω load.
equipment setup Diagrams
AUDIO
SOURCE
SINAD
INPUT
50Ω LOAD/
RF POWER METER
A
C
C
E
S
S
O
R
Y
C
O
N
N
E
C
T
O
R
PTT
GROUND
MIC AUDIO
SPEAKER AUDIO
EXT ANTENNA
RADIO
ANTENNA
JACK
7
2
5
3
8Ω LOAD
TEST BOX
2KΩ
10
µ
F
16 VDC
figure 4-1 test Box setup
AUDIO
GENERATOR
50 OHM
LOAD
RF POWER
METER
TEST
BOX
RADIO
COMMUNICATIONS
TEST SET
(SERVICE MONITOR)
RF IN
AUDIO
OUT
FREQUENCY
COUNTER
MODULATION
METER
RADIO
ANTENNA
MIC. AUDIO
10 VDC
REGULATED
POWER
SUPPLY
OPTIONAL
figure 4-2 transmitter tests setup
Summary of Contents for KNG Series
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Page 63: ...Page 3 8 Service Manual KNG Portables Theory of Operation ...
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