Spegifigations 6 Citi Vx Cacasiarsunnc's Sabeiappne - Kenwood TH-28A Instruction Manual
144 mhz fm transceiver , 430/440 mhz fm transceiver
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Also See for TH-28A:
- Service manual (78 pages) ,
- Instruction manual (65 pages) ,
- Manual (60 pages)
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SPECIFICATIONS
GENERAL
TH-28A/E
—_' TH-48A/E
TH-28A/E
—- TH-48A/E
U.S.A. Version
144 to 148
438 to 450
MODULATION
Reactance
FREQUENCY
[U.K.and Europe | 144 to 146 | 430 to 440
MAX. _ FREQUENCY DEVIATION
£5kHz
RANGE (MHz)
144 to 146 or
430 to 440
SPURIOUS
RADIATION
less than —60dB
Other market
144 to 148
or 438 to 450
RECEIVER
MODE
L
F3E (FM)
:
ANTENNA _ IMPEDANCE
50.0
CIRCUITRY
Double conversion
OPERATING
TEMPERATURE
—20°C~+60°C (—4°F~140°F)
superistaredyne
POWER
DC IN (nominal | 72 V ~ 16 VDC (188 VOC)
INTERMEDIATE FREQUENCY ist. |
45.05 MHz
REQUIREMENTS
|gaTTERY PACK|
63 V ~ 16 VDC (7.2VDC )
INTERMEDIATE FREQUENCY 2nd.
455 kHz
CURRENT DRAIN
(Approx.)
(Approx.)
fecatian
fess than
;
1
—13dB,
13.8VDC (Ext.Power Supply)
H
1.48
1.6A
SENSITIVITY (208 gSINAD)
- aie
tee
7.2VDC (Battery)
H
0.95A
1.1A
(O18
.2uV)
SQUELCH _ SENSITIVITY
less than —20dBy(0.1V)
Transmit mode
L
0.5A
0.6A
SELECTIVITY
—6dB
more than 12kHz
Transmit mode
EL
90mA
95mA
SELECTIVITY
—40dB
less than 28kHz
Receive mode with no signal
coe
aime
AUDIO OUTPUT POWER
more than 200 mW
Battery Save mode
.
2
(10% distortion)
(across 80 load )
| GROUND
Negative
DIMENSION(W X H X D)
49.5 X 115.8 X 37.8mm
DIMENSION(
Projection Included )
61.2 X 131.5 X 37.8mm
WEIGHT
330g
MICROPHONE _ IMPEDANCE
2kQ
TRANSMITTER
H (13.8V
DC)
more than
5W
OUTPUT
H (7.2V DC)
Approx.
2W
POWER
M
(13.8V
DC)
Approx.
2.5W
L (7.2V DC)
Approx.
0.5W
EL (7.2V DC)
Approx. 20mW
60
NOTES:
1.
Circuits and ratings are subject to change without notice, due to
development in technology.
2. Recommended duty cycle :
1 minute Transmission, 3 minutes
Reception.
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