Nemo21 Information and Communications PRO-401 FRS Transceiver User Manual users manual

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Document ID	117437
Application ID	GTMOdvgHvwPFuq9juW4RiA==
Document Description	users manual
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Document Type	User Manual
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Date Submitted	2000-09-18 00:00:00
Date Available	2000-09-14 00:00:00
Creation Date	1999-07-29 10:45:42
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27 ILL ‘99 1911? TI‘flIJ—LRBJ: ENEII‘EZRINS
FCC INFORMATION
THIS DEVICE CDMPLIES WITH PERT IS OF THE ?CC RULES.
OPERITION IS SUBJECT TO THE FULLOUING TIO CDNDITIDNS:
(I) THIS DEVICE MAY NOT CAUSE HARMFBL INTERFERENCE. AND
(2) THIS DEVICE MUST ACCEPT ANT INTERFERENCE RECEIVED.
INCLUDING INTERFERENCE THAT MAY CAUSE UNDERSIEED DPERATIOR
t The Ianulucturcr Is not rospanslble for any r-flio or
TV interference cluseé by unauthorizld lodilitltlnns
to this equip-ant. Such modifications could veld
1h: usur’s uulhnrlty to opcrat- lh- equiv-Int
All'lw'l WHO?! I
MMCA‘I'ION CO, LTD.
fiafif
F.5/5
TABLE OF CONTENTS
CONTENT PAGE
1. INTRODUCTION 1
2. TECHNICAL SPECIFICATIONS
A GENERALW.“
BA TRANSMITTER
C. RECEIVER ......
3. THERORY OF OPERATION
INTRODUCTION
FREQUENCY GENERATION ..
a Phase Lmd LOOP (PI-L) arm"
b) Tmsmiuer
0) wet
OPERATION
CIRCUIT DESCRIPTION.
5 OPERATIONAL TEST
I». PHOTOGRAGHS
7. FULL PARTS LIST
8. PCB LAYOUT AND CIRCUIT DIAGRAMS
9. CIRCUIT DESCRITION ( TRANSMITTER )
<|o , Work mmfi-
u no. smlconnuc'ron DATA SHEETS
0 a o a a 0‘ fl-wqm 0 uuuuuuuuun N "Mn N
1. INTRODUCTION
Ffiwiamiaosiu FM uanseeivvoperuflngonm 14FOCapprweddumelslaFamw Radium
IFRS) on Mums Demon 46215625 to 467.7125 MHz. Wih the output poworolsoon'w. III. radio I:
capaueofoommwing up In 2 mm.
Inadaifionbitssmulslu,FRAGduflusnunyadvmeedfeammMcwldonryb-loumInwamosl
WPRSW.
Lice OW AIM I 3 C Ca. LId. quality pfodufis. II'le FR-484 Garvin a 12 mm inlhd warrarw. Please
wwrwmammrmmhmaleMMywm Pulp,“
visit us an 1h: Web at E-mail\\airueh.mu1ihel‘oo‘kr a
MCI! INFORMATION &
mafia! CO. LTD.
FOC ID:
EXHIBIT II:
2. TECHNICAL SPECIFICATIONS
Medal Number: Airlech'" FRJS'I
A. GENERAL
1) Frequency Range masses to 467.7125 MHz
2) Meduhfiufl Type ‘FSE (FM)
3) Channel capacity : 14 For: spam/ed FRS channels
4) Channel sparing : 12.5 KHz
5) Power Suppry : 3 pesMA she Alkahne Bananas or NiMh Reclurgeeble Bane-lee
s) BaneryVohage :4.5V(Allmllm), slevmimn Rechargeable Bananas)
7) BameryUfe :14nrs(A|karm).ams(mmn Rechargeable eateries)
{At sen-5m ransmit—reeewmnflby cycles)
8)OperafingTamperatum 1-20'0b0060’CHO Fhflw F)
91 Dimensions :BS(H):45(M:25(D)mm
1olweighwmaamnes) : 1205;
B. TRANSMITTER
1) mom: moor-mums»)
2) Frequency srflaility : Bemrlhnn fl~ 2.5ppm mania opemfng mmperaom
3) Hum 8 Harmonic : 4065 With 30014: to SKI-Ix audio filler) g
4) Spurious ; Harms-lies : was
swallow zmsshnnwtlmtmm'lbnwdulnfion)
6] Audio Response 036310: : 40,510] 6,568 (pm-WM)
7) Current Drain on TX
: 350m! @45V. 400mA Q 35V
0. RECEIVER
1189an : 11st mm SlNAD) ,
2] Seleclvity : -50dB ;
3] Inler-modulalion : GNB v
4JSpuriomandlm|gerejecllen :-50dB ,_
5] Maximum Audio Output 1 More than 1snmw (1096 dlslorlim) “
6} Audio Distortion : lees than 5°45 nominal
7) Current Drain on RX : 25m standby.
270mA Q4.5V. 160mA Q 3.8V (mu'mum audio output)
3. THERORY OF OPERATION
INTRODUCTION
The Flt-464 is a micro m 14 channel FRS penable FM tanseelvermlructedvmh a microprocessor
oanlrollod, umperalure eempensaled Phase Locked Loop (PLL) frequency synthesizer. The radio Issues a
double conversion receiver and a direct FM hmsmiller momrlalor. Aged-I “allowed dmu‘n provides
summhsub—audblesignafing(fl085)andnmlofmreeeiviw pamaremhedoflmllyinflle
wwer saver mode to reduce battery current drain during mm.
The Block Diwmm RF and Control Circuit Diagram for F R464 shall be used In sandals Mm lhe renewing
dreuit dwipfion @
AIR-TECH WORMAnON a
MUNICATION Cu, LTD
FCC 117. 4“ ‘ I
MT 0: ( ~‘
FREQUENCY GENERA TION
a. Phase Locked Loop (PLL) Circuit
The Temperawre Compensaled Crysfil Osdllamr (T CXO)(X301 ), PLL ICtU301)arld the varies) diode
Vome Controlled Ombr NCO) (030310301IC318/L302) mm min cemponerus generalirlg flamed
FRS channels for me FR—dfid.
The reference fraquencyoflm PLL is provided bythe mun: rcxo. mamm use lssuppied by cpu
(U401)lhrou9h me smc_m line The phase detector mmno; is filtered and mmmp Diode
mwcslmmgemmmsksmmmlmmymselecledbymecpu,rmvoomwls
buffered wmmmmxorkxdmmmadbdemmmoa
Nomlal FM Modulation is mica/ed by leading voice slgnale lo file vanap Diode D302 VCO cicu‘m
05059504 sets he man‘nmm deviation leveL
Sub audibfie signaling (CTCSS) are generaud by me U403 and I: led no he TCXO for bwdeviation
lrlodulafion. RSH sets he s‘unalim deviant)“ level
InmmofFLLWtoflodg fiwSVN_LD line will becomafiivemlmom the CPU boshuwlflheimmimt
This anew-u the radio only omen mwfioquemies.
b) Transmitter
The laminar operates on me 14 FCC approved FRS manna generated (fiddly from the Pu. VCOA See
table 1 for detailed
c) Receiver
The PLLVOO output leeds me first mixer in the dual convuslon roman The VCO trowel-w 321.4MH:
lowermmmemmmhnquency. Adiodewmhm‘smdwwlwh incs‘laloeomdlhemnilg range
ofmevoo.
The second miner eecllhwroperales at 20 945MHz, which oonvertlhe 21.4MHz first Imam»- Frequency
(IF) inlo the final IF ed 455KH2.
OPERATION
Pleaserelerremeusermanuafludehis
El
CIRCUIT DESCRIPTION mm M110?! &
COMMUNICATION CO. LTD.
FCC ID. own-m
a) Control Circuits m“
- CPU
The CPU (11401) is a One True ngmmmahls (DTP) pram. all The operafing winners and channel
frequencies residue in its Read Only Memory (ROM)
The Input lo the Cl’U are.
User annuals - I'venl panel humans, PTl’.l.elc
Same ‘mpuns - Power supplyvollage level. PLLoutol lock Power up reset..elc
Faanry Test input - For factory automatic unequipment.
The ouimt lrern he CPU are:
Inch-more - LCD screen. LED rummage
Alefllones—givesbeepingbneevhenbtflionsaredepressed
Controls - PLL frequency. Signaling. Audio Muiing. Power 0NIOFF...elo
EEPROM
All he user sebum leamres (mg. Vommre level, CTCSS seitings on each channel. Priorny Seen
Frequenciespebo) are slated in 0402. such Mail Me iMomiafion will be retell-red even when the bamries
were remomed.
- PM Supply Control
When the FWR billion isdepressed. 0402 0mm and supplies vcc lo me regulates 0403 and
associated usnsismrswiiohes to provide mined 3V to the control and RF sections
The CPU isreseiihrwgn R420andC416.andlhenmids#1dU403 launching macaw-rm 3290f
U401sensesanyl’unberdepreeeiononFWRMon.ar1nmvemeCFUmium0N0412.Theradioismenin
lineOF‘Fstale.
N'renmePwerSavemodeieopemfithemsMrdranuwillhemmemforzsoms. mdoilfor
zwmoom‘muoueiyrmrim s1andbyr
AND converter in U401 operates wim me res‘m nework R405 and R407 to perk-me Lew Bemry
Deleclion. When flieVCC voilaoe il under 3.2V. me low nanny icon on the LCD panel blinks.
. lNDIGATORS
Please reform lire usermanual lorihe location arm indioelors.
LCD Panel —
Please referio the user manual fordeiais of al indicators on the Panel
TXIRX LED -
Power On Check up - Orange Light
Standby : No Irrdiedlion
Rem : Green L'qht
Transmit : Red Light
LCD Panel Bsokfint LED-
Gremiahtonlhebadraroundvmnl’wermwmnanyoflhehenlpenelbmmieoperaled.
- BUTTONS
Please releno the user manual for the fundions olell rm lumen; on he radio.
b. Transmitter
PTI’ Sense and Microphone Mm crrcul
Mupdhswmmwmeinlemloondm mierophoneandaboservenvm mow. When P'lT
“amused. Wmandhfonncwofmaofivnyviamju
mnanememalnfiorophoneisussdlwill beoonnededin milelwmrlhe inmalmioropmmdmrl The
useofinlemaioremmai PTTMIIdelormhewifiehmiurouMMiswlive.
- MIG Ampfii'er Circuit
Voice s'gnfil from the cordensev miulbphcne MIC401 is ampii'ad by USO1B. R505“ 0506 lorrmd he pm-
ernphesis oiwilforlhe FM modulslofl'l'relwpessfillerdruulofufiOlNDavoidswermodulsflononhigh
fienuenuiuhansienls The prwessed audio signal is adjusled by 0504.wa For correct deviation level. and
fed in VCO for irewency modulation.
@ Mama-r INKRMATKN a
comrumcmou ca. LTD.
FCC ID. 4“
mean a:
- Sub-Audible Signaling
When the user sends sub-Mia signeing (CTCSSL The CPU will program USOQ to generate the correct
signing at pin 18, The CTCSSoutputsignel is adjusted by R522 fermrrectdeviaticn level. and then fed to
TCXO for km level frequency mutilation.
- Ow‘atoflModulalor Circuit
The liensmit frequency is generated by a PLLNCO oscilhtor controlled by the CPU Nan'ow bend lrequemy
modulation can he achieved by appMng audio signal direcwtc lhe VCO, The FM s'gnal is then switched w
D103 tor further amplification by the PowerAmpIifiere
~ Power Amplifiers
The transmit FM signal is amplified by 0101 and 0102‘ and then to an BipchrTR PaweanpfifierOtoa (or
fuel amplification. The RF output is SOOmW ERPA TheTransm'n/Recewe (TR) switching diodes 0201 and
D101 are holi- conducting. shutting cit the receiving circuit and feed the RF power lo the antenna filter for
fi‘ansm’ssion,
C. Receiver
- Low Pas Fuller and Transrrtitheceive vaimhing Circuit
Received signals from the antenna is fed to the transmit/receive switching circuhlhrougii the low pass filter
composed of L101~L103 and 0101-6105 On receiving D101 becomes offend lhe iransmlrtorcimtfl is
isolated The received signal is led to receiving singe through L104.
- RF Amplifier
Thereceived signalisampfilied by0201. RF selectivity is provided hylheband pmfilelemompcaedcfi
L1.L201.L202.L206.L3,L5 and CS.C6.C205.010I0209,C7.CS.t0 reject signals outside the FRS band
- First Mixer Circuit
The amplified receiving signal is led to G1 ofMOSFET mixer (0203), The 131 local oscillator frequency is led
to 62 The first immediate frequency at 21.4MHz is mu! from the “in lead,
- Intenned'ate Frequency (tF) Circun
The first intermediate bequency signal passes through cryshl filter (XFL2011. bmfored by 0204 all! red to the
IF Integrated Circuit usul. The IF It: consists on second but Mater, inescccnd mixer. Iirniterand FM
demoduhtcr. The second local oscillator operates on 20.945MHZ, and converted the IF signal to the second
immediate frequency at 455KHz. The desired IF selectivity is provided by FL001. FL602 is the inductor for
FM slope delecton adjust it for matrimum demodulated omput and mlninum distortion.
' Receiver Soueich (SO) Circuii
Noise from detector output or 0601 is led to an inlamal fitter amplifier (pin 718) though an bandpass filter
0608.0604R904. ‘I’hovclaae doubler internal rectified the filtered noise. Audio Mute 00W at pin 14 inrcrms
lhe CPU at swelch slants.
A Sub-audible signdig recovery
Deiriodulalcr output from UBOl pin 9 is connected to U502 to recover sub-audible signafing (CTCSSL Any
delectcdcodeswlllbesenttcmeCPu rormmierprmig.mnmeremedsignmmema, me
received audio wiih CTCSS tones being filtered will appear at pin 18 or usoz
- Audio Amplifier
Received audio lrcm um is routed "trough tie—emphasis cirwit R515 and 0513. to the audio amplifier U503
cmnectedinB’RouiputmcdeTheMocutpmpins1and33rereolaledirornthegrwndandoonneo1edto
the External speaker lack When no external specifier is connected, he amplified signal will be connected to
the internal loudspeaker
Tlieaudlo amplifieratso acceptAlertTonce input from the CPU. whichwill gNeauaIephone type ring tone
whentheunitisfirotswitmedonjnd beepimeswhenthe hullonsareoperated bylheueer.
4. Alignment Procedure
Measurement Condlflcn
The iolluwirg seams describes lhe alignmem procedure forum-461 FRS lransceiver under the loam-Ans
reference erwimnment conditions:
Ten-1m L 25'C (77'F)
Relafire Humidity 1 6595
PowerSuppO/Volwge : Alsvoc w w.
Test Equipment! Tools required
Thelclluwinglisiofequipmenlisrecurnmeneealcrweinsemm upineradiopmpenyl Pleaeensurelhem
equipment are calibrated awning in me manufacturer‘s insmidicns:
- Frequency calmer 500ml: +I-100Hz iolerance. high input inpeeence and nlgn m
- UHF FM Serial generawr. sflOMsziln adjustable frequency, FM deviation. and RF output eiienueiore
50h Output Impeciancel
- Owlcecope. high input lmpedance.
- enlwmresielunshudspeakerhed
- Audio Signal Genemcr. 10Hz no ZDKHz, 600.0 impedance win Multilateral
- RFWaiameierfl/ithm1Waandmmhhrl0rRFVMvflnmmefionandeflemfl
son mums)
- Regulated Power Sum esch lA mm
- Diginl A-V-O Mum-meter
- SINAD Meier
- External Speaker Mic plug (or special audio lee! jig)
- Inierccnnedion ml cable for RF and Control PCB
- Circul Diagram for FFMM
PCB layout diagram ior FR-464
Tuning reds for RFflF transformer and lhe VR pctenfimmiers
Disassembling the unit
The Cow
- Open and remove the belierycompemnenl cover
Remove batteries in the helm mperrtnent
Remove lhe 6 scram on me side or the caller): comment.
- Theeeeecculdllmbeopenedioreervlclng.
A Becareful not no break lhe rubberbullen assemblies and the LCD ween.
men MW e
comrumcmw ca, 1.11).
Transmitter Circuimrflusemnt FCC ID: 4a
mean I:
- TCXO frequency
On receiving mode, check TCXO output (EmmerolOSMJ is 3112.3an
- VOO centre! vellage
Set ladio lo receive no CM (462.5625MH1). adjud L302 lcr LUV on last point WNoIBge Teen,
- Transmflner Frequency
Conner: RF Power meter loANTl, Mill-vale PTT in vansmil on CM (462.5625MHZ] check lransmifling
frequmcy error is williin +l- GDOHz
‘ Transmitter Output Power
Wane PTl'totrarwnit on em. Check SOOmeweroutoutai ANTt. Repeat leston Chi-t.
- Transmitter Sub-Mus Tone Deviation
Set rain to transmit on CH1. with CTCSS code 01 (STHz) am no audio moduhtiorL Check for OflKHz
deviation. Repeat test on Ch14
- TmsmitterDevimonLirr-il
Setraifiomtmnsmitoncm wichCSSoodoZanZAzi-Ejamnnauuionmulalim Atlheexiamal
miuophoneinput.injem1KHztoneat-20dBmChecktor2DKi-izfleviafim Reduceflwzbneinpmm-
mmohedrdeviefiondrowedtomm15KHz.Repea|tsetonm14.
Receiver Circuit Adjusunent
. Receiver Sammie;
After adjufiim the FM «murmur. reuse the output level ol’ RF Signal Generler chock the receiver
smsiw at 1205 SINAD to be around —120¢Brn
- Receiver Squeim menu!
Met checking the reoeNer sensmty. tum-flower the RF Signet Generator output too-10:18 SINAD and
observe the equator: circuit operates.
5. Operational Test
Conduct operational test on all the major features and transmit/receive on all
the channels. Observe on LCD/LED displays and alert zones are operative and all
the buttons are funcrionel. Rotor to user manual for details.
6. Photograghs
7. Full Parts List
8. PCB Layout and circuit diagrams
9. Circuit Description (Transmitter)
1D. Semiconductor Data Sheets El
”MEG! mm &
MAW CQ. LTD.
FCC ID:
mmw

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Create Date                     : 1999:07:29 10:45:42
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