Superstar
4900B
Documentation Project
CBTricks.com
Semiconductor Function
IC's
| FUNCTION | REF.NO | TYPE | MANUFACTURER |
| MIC AMP | IC-4 | KIA4558F | KEC |
| RESET | IC-13 | KIA7045F | KEC |
| SQ COMPARATOR | IC-2 | NJM324 (M) | JRC |
| DTMF DECODER | IC-5 | KS58015 | SAM SUNG |
| DTMF ENCODER | IC-6 | KT3170 | SAM SUNG |
| BALANCE MODULATOR | IC-12 | TDA6130-5 | SGS |
| IF DEMODULATOR | IC-1 | MC3361 | MOTOROLA |
| ASC COMPARATOR | IC-1 ASC BD | KIA324F (SMD) | KEC |
| CPU | IC-7 | TMP87CM21DF | TOSHIBA |
| PLL | IC-9 | LC7152M | SANYO |
| LCD DRIVER | IC-401 | LC75854W | SANYO |
| 10V REGULATOR | IC-14 | KIA7810 (TO-220) | KEC |
| BALANCE MIXER | IC-3 | UPC1037AH | SGS |
| EEPROM | IC-8 | X24C02F | PRO-CHIPS |
| 5V REGULATOR | IC-10 | KIA78L05 SOT-89 | KEC |
| AUDIO POWER AMP | IC-11 | KIA7217AP | KEC |
Transistor, Diode
| FUNCTION | REF.NO | TYPE | MANUFACTURER |
| CLARIFIER B+ SW | Q404 | KRA102S | KEC |
| B+ SW FOR USA & LSB | Q403 | KRC102S | KEC |
| SW FOR ANT 1 LED | Q406 | KRC112S | KEC |
| SW FOR ANT 2 LED | Q405 | KRC112S | KEC |
| SW FOR LCD BACKLIGHT | Q401 | KTC200, TO-92 | KEC |
| SW FOR LCD BACKLIGHT | Q402 | KTC200, TO-92 | KEC |
| FINAL PA | Q73 | 2SC1969 (CH) | MITSUBISHI |
| FINAL PA | Q74 | 2SC1969 (CH) | MITSUBISHI |
| DRIVER | Q72 | 2SC2166 | MITSUBISHI |
| AVR SWITCH | Q65 | KTA1940 | KEC |
| NB B+ SWITCHING | Q1 | KRA104 | KEC |
| NB B+ SWITCHING | Q2 | KRC110S | KEC |
| NB SIGNAL MUTE | Q7 | KRC110S | KEC |
| NB NOISE AMP | Q5 | KRC112S | KEC |
| NB B+ DRIVER | Q6 | KTA1504 | KEC |
| AMC DRIVER | Q43 | KTA1504S | KEC |
| FM LIMITTER B+ SWITCH | Q50 | KRA102S | KEC |
| RX DET LEVEL SWITCH | Q29 | KRC110S | KEC |
| SSB MOD MUTE | Q41A | KRC110S | KEC |
| AM MOD MUTE | Q59 | KRC110S | KEC |
| AUDIO MUTE | Q62 | KRC110S | KEC |
| RX MUTE | Q18 | KTC3880S | KEC |
| RX 1st AMP | Q19 | KTC3880S | KEC |
| RX 1st MIXER | Q22 | KTC3880S | KEC |
| RX AMP | Q23 | KTC3880S | KEC |
| 10.2417 OSC | Q32 | KTC3880S | KEC |
| FIN BUFFER | Q36 | KTC3880S | KEC |
| VCO OSC | Q37 | KTC3880S | KEC |
| VCO BUFFER | Q38 | KTC3880S | KEC |
| 2ND MIXER OSC | Q53 | KTC3880S | KEC |
| SQ IN | Q14 | KRC102S | KEC |
| FM B+ SW FOR MIC AMP | Q39 | KRC102S | KEC |
| SWITCH FOR HI-CUT | Q45 | KRC102S | KEC |
| SWITCH FOR HI-CUT | Q46 | KRC102S | KEC |
| SWITCH FOR HI-CUT | Q47 | KRC102S | KEC |
| SWITCH FOR HI-CUT | Q48 | KRC102S | KEC |
| SWITCH FOR METER | Q60 | KRC102S | KEC |
| SSB AGC CONTROL | Q16 | KRC102S | KEC |
| AMC DRIVER | Q44 | KTC3875S | KEC |
| AM ALC DRIVER | Q64 | KTC3875S | KEC |
| AM/FM POWER DRIVER | Q68 | KTC3875S | KEC |
| AUDIO PRE AMP | Q17 | KTC3875S | KEC |
| AUDIO PRE AMP | Q63 | KTC3875S | KEC |
| RF GAIN DRIVER | Q21 | KRC112S | KEC |
| SWITCH FOR ANL | Q31 | KRC112S | KEC |
| R / TX SWITCH | Q57 | KRC112S | KEC |
| SWR SWITCH | Q603 | KRC112S | KEC |
| NB AMP | Q3 | KTC3878 | KEC |
| NB AMP | Q4 | KTC3878 | KEC |
| TX IF AMP | Q24 | KTC3878 | KEC |
| IF AMP | Q25 | KTC3878 | KEC |
| IF AMP | Q26 | KTC3878 | KEC |
| IF AMP | Q27 | KTC3878 | KEC |
| IF AMP | Q28 | KTC3878 | KEC |
| SSB POWER SW | Q42 | KTC3878 | KEC |
| TX PRE DRIVER | Q75 | KTC3879 | KEC |
| TX BUFFER AMP | Q69 | KTC3879 | KEC |
| RX / TX SWITCHING | Q611 | KRC107 | KEC |
| SWR SWITCHING | Q602 | 2SJ144 | TOSHIBA |
| CAL SWITCHING | Q604 | 2SJ144 | TOSHIBA |
| MOD METER SWITCHING | Q607 | 2SJ144 | TOSHIBA |
| RX B+ SWITCH | Q55 | KTC200 | KEC |
| SSB B+ SWITCH | Q67 | KTC200 | KEC |
| TX B+ SWITCH | Q58 | KTA200 | KEC |
| MAIN B+ SWITCH | Q66 | KTA200 | KEC |
| 9V REG B+ SWITCH | Q61 | KTC3205 | KEC |
| PRE DRIVER | Q71 | 2SC2314 | SANYO |
| BIAS | D75 | 1N4001 | KEC |
| BIAS | D74 | 1N4001 | KEC |
| NB DC DETECT | D1 | 1N60 | KEC |
| NB DC DETECT | D2 | 1N60 | KEC |
| CAL / SWR METER DETECT | D77 | 1N60 | KEC |
| RX SIGNAL METER DET. | D7 | 1N60 | KEC |
| RX AM / SSB DET. | D23 | 1N60 | KEC |
| RX AM / SSB DET. | D24 | 1N60 | KEC |
| RX SIGNAL METER DET. | D83 | 1N60 | KEC |
| CAL / SWR METER DET. | D101 | 1N60 | KEC |
| RELAY RECTIFIER | D78A | 1N4148 | KEC |
| 9.1V REG ZENER | D103 | UZ9.1B | KEC |
| ANT 1 ON LED | D411 | DKL30RD | EVER GREEN |
| ANT 2 ON LED | D412 | DKL30RD | EVER GREEN |
| RX / TX INDICATOR LED | D407 | 209EGW/S209 | EVER GREEN |
| BRIDGE RECTIFIER | BD1 | KBPC606 | PYUNG CHANG |
| RX EXPENDER | D13 | KDV251S | KEC |
| RX EXPENDER | D14 | KDV251S | KEC |
| VARICAP FOR CLR | D28 | KDV251S | KEC |
| VCO EXPENDER | D29 | KDV251S | KEC |
| VCO EXPENDER | D31 | KDV251S | KEC |
| TX EXPENDER | D68 | KDV251S | KEC |
| TX EXPENDER | D69 | KDV251S | KEC |
| TX EXPENDER | D71 | KDV251S | KEC |
| RX EXPENDER | D30 | KDV251S | KEC |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.