Realistic TRC-490-18 Скачать руководство пользователя страница 1 | Manualshive

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Realistic TRC-490-18 Скачать руководство пользователя страница 1

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Содержание TRC-490-18

Страница 1: ...TRC 490 18 OWNER MANU EMTtEmawaT D PLEASE READ BEFORE USING THIS EQUIPMENT EAT NO 1 9490 CUSTOM MANUFACTURED FOR TANDY CORPORATION...

Страница 2: ...ore clearly than an equivalent AM signal SSB reception is simple just adjust the CLARIFIER control to bring in the voice Transmissions We ve added all the other most wanted features for optimum commun...

Страница 3: ...ess than 2 700 mA At no Modulation AM 65 Watts SSB 45 Watts At Max Output Power AM 100 Watts SSB 100 Watts Size Weight Accessories RECEIVER Max Sensitivity Sensitivity for 10 dB MI AGC Figure of Merit...

Страница 4: ...have adequate leg room Another extremely important requirement is the ease of installation and removal for service and main tenance Mount the transceiver so it can be slipped in and out very easily Th...

Страница 5: ...itch hot terminal and connect the Black with stripe Wire to the metal frame of the vehicle Thus Black always goes to negative and Black with stripe always goes to positive Set DC AC switch to the DC p...

Страница 6: ...ide maximum gain and maximum directivity The directivity can be a disadvantage unless a rotor is used Since a beam antenna is directional it greatly reduces noise and interference from all other direc...

Страница 7: ...Shack s 102 2 6 m Fiberglass Marine Antenna 21 912 you won t need a ground it has been designed with its own ground system NOISE Your vehicle or boat can be the cause of much noise interference Your...

Страница 8: ...rs come already equipped with this type of wire 2 Inspect the high voltage ignition wire and all connections made with this wire Old ignition wire may develop leakage resulting in hash 3 If noise stil...

Страница 9: ...the level of the internal Squelch circuitry to cut out the background noise when no signal is being received When properly set it allows signals to come through but cuts off the receiver sound when n...

Страница 10: ...nal from your PA speaker when the microphone button is released CH 5 Switch Press in and you instantly jump to channel 5 Press again to release this function and Transceiver will return to the previou...

Страница 11: ...r to the desired channel 6 Adjust SQUELCH to cut out annoying background noise when no signal is being received To do this set Channel Selector to a channel where no signals are present or wait till s...

Страница 12: ...When first listening to an SSB signal it probably will not be understandable the voice may sound like Donald Duck or just a low guttural sound In either case very slowly adjust CLARIFIER to bring the...

Страница 13: ...mplifier To use this function you must connect an 8 ohm public address type speaker to the PA SPeaKeR jack on the rear of this unit We recom mend Radio Shack s 40 1244 it s a weatherized 4 10 cm speak...

Страница 14: ...signal and yet we are transmitting 3 signals Not only are we sending 3 signals but also we are wasting most of our power in one of them which carries none of the intelligence i e the carrier 27 015 MH...

Страница 15: ...has only 1 watt of power in one sideband an SSB transmitter can have 4 watts of power in one sideband or 4 times the power of an AM transmitter Thus effectively an SSB transmitter with the same power...

Страница 16: ...trouble is experienced with transmitting Check if the transmission line is securely connected to the ANTENNA Connector Check to be sure the antenna is OK Are all transmission line connections secure...

Страница 17: ......

Страница 18: ...ts Nor does it cover equipment subjected to misuse or accidental damage This Warranty gives you specific legal rights and you may also have other rights which vary from state to state We Service What...

Страница 19: ...Ratio N for Ch 1 through 18 is determined as shown in the Frequency Chart For example when the unit is transmitting on Channel 15 the frequency will be as shown in following table CH ANTENNA OUTPUT F...

Страница 20: ...n series Adjust for 60 mAlmA If you can not obtain 60 mA set VR9 for max current After STEPs 1 and 2 restore circuit at TP8 and TP7 3 Same as step 1 OSC1 500 Hz OSC2 2400 Hz S1 S2 ON L26 27 28 and L29...

Страница 21: ...V R1 Set the level of SG to 100 V Then adjust for S 9 reading on Transceiver s meter 6 Same as step 1 except NB ANL switch is ON Ll and 2 Connect the Oscilloscope to TP6 lead of R 9 Adjust the level...

Страница 22: ...1 ILl 4 MARKI N G SIDE 11 PC 44 7CA ar PC 384M Att 12 CHANNEL SWITCH 13 LED P C BOARD 20 MAIN P C BOARD PAGE 23 P C BOARD PAGE 23 TOP VIEW PAGE 25 TOP VIEW...

Страница 23: ...22 ADDITIONAL PARTS ON THE BOTTOM 0 001 C23 d N for page 28 TR 34 2SCI419C PC 385 for page 27 PC 3 85...

Страница 24: ...M401 5 S S RF METER f I IA 1 a c4o3 c g cra w 8 Lc z T401 TF Zg W96 13L1c 80 p j I W92 EL 5 So PJ 1 1 r_i_will oRG 2 _OP J j 6 3i1 1 r I iWNW EILKOD 5 80 P R423 ill ISM 1 2W J GRY 5 80 P 4 1 PC 38644...

Страница 25: ...ramic 470pF 50V K UJ CCUZ 814715 C 181 Capacitor Ceramic 0 0471 F 50V Z ZF CKCZ 814730 33 C 212 Capacitor Ceramic 0 022pF 50V M YF CKDZ 812230 C 233 Capacitor Ceramic 330pF 50V K SL CKDZ 813315 39 R 1...

Страница 26: ......

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