J Communications Co JF414-401EU User Manual

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Document ID	13496
Application ID	dOufeXxhhGW3LTZWcBSyeg==
Document Description	Users Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	12.8kB (160004 bits)
Date Submitted	1998-11-19 00:00:00
Date Available	1999-01-20 00:00:00
Creation Date	1998-11-17 13:59:01
Producing Software	Acrobat 3.0 Scan Plug-in
Document Lastmod	1998-11-17 14:00:31
Document Title	Users Manual
Document Creator	Acrobat 3.0 Scan Plug-in

JF—414EU
SERVICE MANUAL
2—WAY PORTABLE
HANDHELD
RADIOS
J —communications co. , ltd
CONTENT
1. GENERAL
1.1 General
1.2 Characteristic
1.3 Composition
2. SPECIFICATION
2.1 General Spaification
2.2 Electrical Specification
3. OPERATION
3.1 Key Name
3.2 Key thctions
3.3 Setting and Operation
4. ADJUSTIIENT
4.1 Frequency synthesizer
4.2 Transmitter
4.3 Transmitter Test
4.4 Receiver
4.5 Receiver Test
4.6 Symptoms. check point 8: Correction
5. DESCRIPTION OF RADIO CIRCUIT
5.1 Frequency Synthesizer
5.2 Receiver
5.3 Transmitter
. BLOCK DIAGRAM
. SCHENATIC
. CONPONENT PARTLIST
. ASSNBLEY DRAWING AND PHOTOGRAPH
10. SPEC SHEET
11. CHANNEL DATA
1. GENERAL
1.1 GENERAL
This equip-eat. JF-ALIAEU is called 2 way portable handheld radios.
ll'he frequency range is 462~467le. UHF operating channels for
international 2 vay portable radios.
1.2 CHARACI'ERISTIC
a) All active device in this radio is (so-posed of senicmducbor and high
density 10.
b) To design this radio in (so-pact and weight approximtely 140g with
battery cell.
C) CPU of this equip-rent is M47P202 fron TOSHIBA.
d) It's power can operate by use of alcaline 4 ce11(1.5V AAA) battery.
1.3 COMPOSITION
This radio is (so-posed of following.
a) Translitter
b) Autumn
c) Hand Strap
2 . SPECIFICATION
2.1 Gm SPECIFICATIONS
a) Frequency Range : 462HHz‘467III-Iz
b) Output Ilpedance 2 509 Unbalanced
c) lodulation Il‘ype : 8KO0F3!
d) Gun-unimtion lode : Half duplex
e) Channel Capacity : 14 channel
f) Channel spacing i 12.5 kHz
9) Power 1 5.4 or 6.6V
h) Battery Life I > 30 hours (Tx5%, Rx5%. Stand-by 90%)
i) Operating Telperature I —10°C~+60°C
j) Dinension : 100(H)x 50(l)x 24(D)n
k) “eight I l40§(vith Battery)
2.2 ELECTRICAL SPECIFICATION
a) TRANSII'H'ER
1) Output power : lax 500ml
2) Frequency Stability 1 iSppl(—10”C~+GO°C)
3) llodulatim lethod 2 FM
4) Oscillation Method 1 I’LL SYM'HESIZER
5) llax. Frequency Deviation I < i2.5kflz
6) Cooling Hethod : airoooling Hethod
7) Spurious mission : < 6063
8) Fl! Hun/Boise 3 < “(M2 70% modulation)
9) Distortion : > 5%(lkflz 603; lodulation)
10) Tx Audio Response 1 66.3 /OC'l' i3dB m—mms15(300|iz~2.5mz)
b) RECEIVER
1) Receive lethad : Double Super Heterodyne
2) Receive Sensitivity 2 < 0.25 uV(l2dB SINAD)
3) Scuelch Sensitivity : 0.2 “V
4) Selectivity : < 60GB (12.5kl'lz)
5) local Frequency Stability : i5pp|(—10"C~+60°C)
6) Spurious Response : < 6065
7) Audio output 2 < 250!‘
8) Distortion : > 53; (lkHz 603; lodulatian)
9) RX Audio Response : 6dB/OC'1' i3dB DE—mHASIS(300Hz~2.5kHz)
10) 5/11 Ratio 2 < 40GB (M2 70% lodulation)
11)IF115t IF = 217le
2nd IF = 45015112
12) [0031 Frequency : lst local Frequency = is — 21.7lflz
2nd Local Frequency = 21.25le

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Modify Date                     : 1998:11:17 14:00:31
Creator                         : Acrobat 3.0 Scan Plug-in
Producer                        : Acrobat 3.0 Scan Plug-in
Create Date                     : 1998:11:17 13:59:01
Page Count                      : 5

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