Yaesu FT-227R Memorizer, Instruction Manual

Page 1: ...INSTRUCTION MANUAL FT 227R MEMORIZER YAESU MUSEN CO LTD TOKYO JAPAN...

Page 2: ...ENERAL 1 SPECIFICATIONS 4 INSTALLATION 5 CONTROLS SWITCHES 8 REAR PANEL 10 OPERATION 11 BLOCK DIAGRAM 13 THEORY OF OPERATION 14 MAINTENANCE ALIGNMENT 21 PARTS LIST 30 TRANSISTOR IC CONNECTIONS 35 PROG...

Page 3: ...ulty A memory circuit memorizes any channel out of 800 channels A touch of a switch brings you back to the memorized channel instant ly In addition to a conventional 600 kHz repeater split any transmi...

Page 4: ...be limited to 400 within either 144 146 MHz or 146 148 MHz The FT 227R VHF FM transceiver is supplied complete with all mount ing hardware cables connectors and accessories required for a mobile inst...

Page 5: ...is FLUSH f Fold the hinged cover over the connector element and snap firmly in place Plastic Insulator with hinged snap in cover power to transceiver slot for side entry of hot wire Figure 2 RED BLAC...

Page 6: ...n external 8 ohm dynamic speaker Dynamic push to talk microphone with retractable coiled cord 13 8 Volts DC 10 O 5 Amps Receive 1 0 Amps Transmit LOW 2 5 Amps Transmit HI Illuminated front panel meter...

Page 7: ...s be in the clear and as high as possible however a minimum dis tance of 5 feet should be maintained between the VHF and other antennas Also in mobile installation it is advisable to locate the antenn...

Page 8: ...l the FT 227R as follows refer to figure 4 1 Use the universal mounting bracket as a template to locate the mounting holes Use a 3 1 611 diameter drill for these holes and allow clearance for the tran...

Page 9: ...TAGE WITH THE EN GINE RUNNING BATTERY CHARGING IF THE VOLTAGE EXCEEDS 15 VOLTS DC THE REGULATOR SHOULD BE READJUSTED SO THE HIGHEST CHARGING RATE DOES NOT EXCEED 15 VOLTS ALSO BE SURE TO OBSERVE PROPE...

Page 10: ...Outer control 4 FUNCTION Switch CD 7 Figure 5 Endless optical coupling selects 800 channels The VOLUME control adjusts the receiver audio output level and turns power off when rotated to an extreme C...

Page 11: ...ctor is used for microphone input and push to talk relay actuation When pressed the frequency on the dial is memorized and M lamp lights up To release the memorized frequency press the switch a second...

Page 12: ...aker Output impedance is 8 ohms and the internal speaker will be dis abled when a plug is inserted The ACCESSORY socket is used for external control of the trans ceiver _The BURST switch applies a sho...

Page 13: ...cts the frequency at every 10 kHz step Clockwise rotation increases the frequency up to 14 8 0 0 0 MHz and counterclockwise rotation reduces the frequency down to 143 9 9 0 MHz When the S kHz up switc...

Page 14: ...600 kHz the transmitting frequency shift s 600 kHz down The MEMORY function can be u s ed with the function switch on the repeate r po s ition and the receive frequency i s memo rized For non standar...

Page 15: ...1 0 202 D20l ceo2 0203 2 1 a 2ff3 1s B t 2 2gg7Ji r I I r J I L 1PB 1555 I w I T ONE SQUELCH 1 I I z I OPTION I 0 0501 0503 0501 0501 0505 0501 0502 0504 I MC3403d 2SKl9GR MC3403o MC3403b 2SC372Y MC34...

Page 16: ...control i s nominally s e t for a deviation o f 5 kHz The spe e ch signal i s then applied to a pha s e modulato r varacto r diode D401 ISV5 0 which vari e s the fr equency of the 1 0 7 MHz c rystal...

Page 17: ...buffe r Q21 6 2S C 3 7 2 Y and applied to the mic rophone circuit of the transmit te r The tone frequency i s adjustable by VR2 0 7 while the output level deviation is adju s table by VR2 09 and the b...

Page 18: ...en dete cted by Dl08 and Dl09 1Sl 8 8FM to produce a DC voltage Thi s voltage i s then applied to turn Qll2 2S C 3 7 2Y on With the conduc tion of Qll2 the base of Qll 3 is grounded to squelch the aud...

Page 19: ...i s ting of L 3 0 5 C 3 31 and C 3 3 2 to the amplifie r s Q3 0 6 and Q 3 0 7 2S C 3 7 2 Y The amplified signal i s then fed to a programmable divider Q3 0 8 uPD 8 57 C The crystal o s cillato r Q312...

Page 20: ...Hz using MC14 510B a s a clock signal The signal applied to U D te rminal i s inve rted by a unit of Q71 0 and controls the up down counter The output from Q7 07 Q7 09 i s fed to a 4 bit data s ele ct...

Page 21: ...upply voltage at 6 Volts for the VCO and phase comparator The 5 Volts supply for the PLL con trol unit is regulated by a zener diode D3 WZ050 and is connect ed directly to keep memory when the power s...

Page 22: ...the unit a of Q 5 01 MC 3 40 3 The unit a of Q 5 01 fo rms a high pas s filte r and the unit b of Q 5 01 fo rms a T notch filte r Both filter s r emove the tone signal from the audio signal which i s...

Page 23: ...at the POWER r e c eptacle When ope rating mobile che ck the batte ry voltage und e r the load transmitte r keyed in FM mode with the engine running fa st enough s o the ammeter shows a change In add...

Page 24: ...r output Che ck the receive r s ens itivity a s follow s a C onne ct an AC VTVM to the SP rec eptacle and s et the SQUEL C H control fully counte r clockwi s e b Conne ct the RF output of a preci s io...

Page 25: ...antenna conne ctor C onne ct a VTVM betwe en TPl and ground lV DC r ange b K ey the transmitte r and peak T201 for maximum VTVM reading c Set the HI LO W switch to HIGH po s ition and VR20 5 to extrem...

Page 26: ...in 2 hot and 1 ground of mi c ro phone r e cepta cle and a deviation m ete r a s illustrated in Fig 13 Set the audio output level to 2 5 mV at 1 kHz b Connect a frequency counte r betwe en TP3 of the...

Page 27: ...red bur st duration RECEIVER 1 RF Amplifie r a C onnect the calibrated s ignal generato r to the antenna conne cto r and s e t the channel s ele cto r to 147 0 MHz b Tune the signal gene rato r_ to th...

Page 28: ...ction of inc r e a s ing capacitanc e until the V TVM r eading become s 5 lower than peak indication approx 60 mV rms d C onne ct RF probe of the VTVM to the ba s e of Q3 0 5 Key the trans mitte r and...

Page 29: ...ch The optional tone squel ch unit ha s been s et to 77 Hz operation at the fa cto ry howeve r the tone s quelch frequency can be cho s en to any fr equ ency between 70 Hz to 1 60 Hz by the s etting o...

Page 30: ...1 0 2 Q2 0 1 Q2 1 6 V R 2 0 1 0 N 0 0 N cr N cr cr N cr 0 N cr N 0 cr J N tj t J 00 0 0 0 N o 1 1 cr 1 cr cr cr cr 0 J f P L L CONTROL UNI T 28 0 N f N N J N 0 N f 0 N 0 N J N J VR 2 o s VR2 0 3 L1 0...

Page 31: ...2 T4 o 4 04 0 4 T4 o 04 0 5 T4 0 6 040 6 T4 0 7 T 4 o s N 0 c t cr cr cr 0 M M cr cr PLL UNIT Qs o 2 Qs o 3 0 0 0 l M 1 cr cr DISPLAY U NI T 29 r o lO t i N rl 0 0 0 0 0 0 M M 1 1 x x x x x x PB 1 7...

Page 32: ...4 CONNECTOR R248 Jl 68020006 FM 142S Rl02 105 107 112 J2 68020012 SG 8050 Rl lO 124 131 157 l 4 J3 68050003 CS 250 R201 208 220 J4 68000007 JS0 239 R252 J5 68040003 FM 144S Rl23 Rl47 162 215 1 t P _l_...

Page 33: ...246 42124101 Composition YzW GK 100 0 C208 210 262 Cl55 156 168 34320475 l 25WV R 4 7 F THERM I STOR Cl63 183 2 1 1 212 250 34220106 16WV R lO F THlOl 29090001 SDT 250 Cl74 229 263 34220107 R lOO F Cl...

Page 34: ...29010 31S20010 31S20020 31S29030 31S20030 31S20040 31S27040 31S25040 31S29050 31S20050 31S27060 31S20070 31S200SO 31S270SO 31S29100 31S20120 31S20150 31S291SO 31S20200 31S29270 31S20330 31S20390 31S29...

Page 35: ...240048 R626 Ii 240049 5047 14 Ii 240050 VCO Case C601 VCO Case Cover C602 Wrapping Terminal C C603 Printed Circuit Board Symbo l Nu mb e r I C TRANSI STOR MOS IC MC14519B PB 1763A MOS IC MC14042B MOS...

Page 36: ...l l lOKO R504 40143123 l l l 12KO 73000003 Fu s e 3A R510 5 1 1 517 40143223 l 22KO R502 508 40143393 39KO 67020003 Ex te rn a l Speake r Plug P 2240 R501 505 521 522 40143473 47KO R506 507 40143823 l...

Page 37: ...3SK 5 1 2SA564A GA T O N 1 SO URCE S UBST RATE AND CASE S E t J c o mor n 2SC 730 250235 C OLLECTOR PIN 1 TC508 1 MSM56 1 MC 1 4049 8 MC 1 40088 MC l 4 5 1 08 MC 1 4 0288 MC 1 4 5 1 1 8 MC 1 4042 8 MC...

Page 38: ...145 03 5 030 1 203 1 1 0 0 0 145 04 5 040 1 204 0 0 1 0 0 1 45 05 5 050 1 205 1 0 1 0 0 145 06 5 060 1 206 0 1 1 0 0 145 07 5 070 1 207 1 1 1 0 0 145 08 5 080 1 208 0 0 0 1 0 145 09 5 090 1 209 1 0 0...

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Page 41: ...c Comunica o por ceder este e centenas de outros manuais para serem scaneados Se voce baixou um manual raro de equipamento nacional ou importado provavelmente veio do Wilson Scaneado em Nov 2021 por P...

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