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  5. Installation Manual

Sailor RT2048 VHF Installation Manual

Summary of RT2048 VHF

  • Page 1

    Installation manual sailor rt2048 vhf m2048gb-0.Indd i m2048gb-0.Indd i 18-08-2006 14:26:34 18-08-2006 14:26:34.

  • Page 2

    Disclaimer any responsibility or liability for loss or damage in connection with the use of this product and the accompany- ing documentation is disclaimed by thrane & thrane. The information in this manual is provided for information purposes only, is subject to change without notice, may contain e...

  • Page 3

    Rt2048 contents 1. Introduction 1-1 1.1. General description 1-2 1.2. Technical data 1-3 1.3. Controls 1-4 1.4. Principle of operation 1-6 2. Installation 2.1 2.1. Mounting possibilities 2-2 2.2. Handset 2-6 2.3. Microtelephone connector 2-6 2.4. Power supply 2-6 2.5. Power connector + ext. Loudspea...

  • Page 5

    0820 page 1-1 rt2048 1. Introduction the rt2048 vhf radiotelephone has been designed to comply with the increasing demands of a highly technological product, which means high quality, small size, etc. The rt2048 is furthermore designed to fit into the compact 2000 module programme. The rt2048 can ei...

  • Page 6

    1 introduction rt2048 1.1. General description vhf rt2048 is an all solid state constructed microcomputer controlled vhf radiotelephone, intended for ship/ship and ship/shore communication. Vhf rt2048 can operate in both simplex and semi-duplex mode. Vhf rt2048 includes all 55 international and u.S....

  • Page 7

    1 introduction rt2048 9403 page 1-3 1.2. Technical data fulfils the international cept regulations. General all international maritime vhf channels private channels: 10, may be extended to 40 operation: simplex and semi-duplex modulation: g3ejn (phase) antenna impedance: 50 ohm frequency stability: ...

  • Page 8

    1 introduction rt2048 1.3. Controls selcall off vol sq 1 4 2 5 8 dim 7 p 0 shift 16 1w 9 6 3 1w tx t / r u.S. Delete scan scan add scan scan time d.W. Us vol off indication of on/off/vol turn-style knob operation. Sq squelch sensitivity control knob with turn-style operation. 16 quick selection of t...

  • Page 9

    1 introduction rt2048 shift scan 5 time selects the scan time from 1 to 99 seconds. The time chosen is the listening time on one of the secondary channels receiving a signal. Shift d.W. 6 selects the dual watch facility. Shift 1w 9 selects 1w reduced power output. Shift u.S. 8 selects the vhf channe...

  • Page 10

    1 introduction rt2048 1.4. Principle of operation frequency generation all the internal frequencies are referenced to a crystal oscillator, running on 14.85 mhz. The 14.85 mhz is divided by 4 in the reference divider, to generate a 3.7125 mhz signal, which is the input to the pll-reference divider a...

  • Page 11

    1 introduction rt2048 page 1-7 9403 block diagram.

  • Page 13

    2. Installation before installation of a sailor vhf rt2048 the following points must be observed: 1. Which facilities have to be enabled? Selcall, private channels, us-mode, dual watch, scanning facilities, etc. The procedure how to enable the facilities is described in the manual: instructions for ...

  • Page 14

    2 installation rt2048 2.1. Mounting possibilities the vhf rt2048 cabinet is designed in a module called a mini 1/4 box. For this module we can supply a wide variety of installation brackets etc. Which will be described below. We have made a drawing including dimensions and drilling plan for each typ...

  • Page 15

    2 installation rt2048 h2067 mounting bracket for tabletop, bulkehad or deckhead mounting for mini 1/4 box this mounting bracket is used when rt2048 is to be mounted next to other sailor units in the compact 2000 programme mounted in h2055 mounting brackets. For example when installing the rt2048 nex...

  • Page 16

    2 installation rt2048 9346 page 2-4 h2057 angle hinges for tabletop, bulkhead or deckhead mounting for mini 1/4 box h2057 is designed for stationary installation. It offers a lot of mounting possibilities using the different holes in the angle hinges when tilting the vhf. H2057 25534 25530 25531a 25...

  • Page 17

    9346 page 2-5 h2063 console mounting kit for 1/4 box this mounting kit is used for console flush mounting of 1/4 box and mini 1/4 box. Free distance must be kept to allow free air circulation, ambient temperature max. 40 o c. H2063 25663 weight: mounting kit h2063: 1.0 kg vhf rt2048: 3.2 kg 24703 25...

  • Page 18

    2 installation rt2048 2.2. Handset the handset can be placed anywhere near the vhf set. The cable is five-cored and connected to the rear of the vhf through a 9-pole sub-d connector. Installation of the cable, see the drawings of the mounting brackets. The cable grommet must be placed in the most co...

  • Page 19

    2 installation rt2048 2.5. Power connector + ext. Loudspeaker view from mounting side pin no. 1 ext. Loudspeaker pin no. 2 ext. Mute* pin no. 3 +12v power supply pin no. 4 on/off for 24v supply pin no. 5 -12v power supply pin no. 6 ext. Loudspeaker 24914 * only active when option board pcb is instal...

  • Page 20

    2 installation rt2048 4. With aux interface option installed part no. 625473 (aux1, aux2 and mute functions) (distress and selcall functions are also mounted). A. Aux2, when information on certain channels is wanted, i.E. Controlling a watch keeping receiver, the aux2 information can be used, a rela...

  • Page 21

    2 installation rt2048 9346 page 2-9 component location for 626945 seen from soldering side seen from soldering side with soldering side tracks. With component side tracks. Pcb rev. 26945 diagrammes for special options 625660 625661.

  • Page 22

    2 installation rt2048 page 2-10 9346 626945 625473.

  • Page 23

    2 installation rt2048 delayed key option to make a repeater station on a duplex channel, you need two pcs. Of rt2048, one for receiving on lo band, one for transmitting on hi band. To get this function, the function code has to be reprogrammed for the specified channel in both sets. The modulation s...

  • Page 24

    2 installation rt2048 2.8. Rear view of vhf rt2048 25567 9350 page 2-11.

  • Page 25

    2 installation rt2048 page 2-12 0549 us-mode (a.-channels) int'l mode (int.-channels) 01 156.050 156.050 160.650 02 156.100 160.700 03 156.150 160.750 04 156.200 160.800 05 156.250 156.250 160.850 06 156.300 156.300 07 156.350 156.350 160.950 08 156.400 156.400 09 156.450 156.450 10 156.500 156.500 ...

  • Page 27

    3. Service 3.1. Maintenance preventive maintenance if sailor rt2048 has been installed in a proper way the maintenance can be reduced to an overhaul at each visit of the service staff. Then inspect the set, the antenna, cables, and plugs for mechanical damages, salt deposits, corrosion, and any fore...

  • Page 28

    3 service rt2048 3.4. Test probe all measurings made by means of a test probe will be relative measurements. For quantitative measurings the diode probe should be calibrated by means of a signal generator at a certain impedance level (50 ohm) as a function of frequency. 3.5. Adjustment procedure 3.5...

  • Page 29

    3.5.2. Adjustment of rx/tx unit alignment of internal power supply 1. Select channel 6. 2. Select 1w output level and key the transmitter. 3. Connect a dc-voltmeter to the test point at the output of u01. 4. Adjust the output voltage to 8v +50 mv by means of potentiometer r04. Alignment of rf and if...

  • Page 30

    3 service rt2048 3.7. Replacement of components when replacing transistors, diodes, resistors, capacitors and similar components you must use a small „pencil“ soldering iron of 30 to 75 watt rating. The soldering must be performed rapidly to avoid overheating, and the use of a tin sucker is recommen...

  • Page 31

    3 service rt2048 3.10. Pin configurations page 3-5.

  • Page 32

    3 service rt2048 page 3-6.

  • Page 33

    3 service rt2048 page 3-7.

  • Page 34

    3 service rt2048 page 3-8.

  • Page 35

    Rt2048 squelch read-out loudspeaker on/off/vol loudspeaker keyboard (module 1) thread for cover allen screw antenna connector power connector for 12v or n420 thread for cover allen screw fuse cover with spare-fuse microphone connector strap for connection to n420 (24v) strap for connection to extern...

  • Page 36

    Rt2048 front ↔ 4.1. Mechanical disassembling rt2048 to disassemble the rt2048 remove the two allen screws with the black covers on the rear of the set and pull the front plate and cabinet from each other. Page 4-2 rt2048 4-6-25563.

  • Page 37

    5. Circuit description and schematic diacrams 5.1. Keyboard unit (module 1) the keyboard unit comprises the 3 point 4 push button matrix, which is used for all the entries from the front panel e.G. Channel selection, 1w etc. Besides the led-diodes for keyboard illumination is placed on this board. V...

  • Page 38

    5 circuit description and schematic diagrams rt2048 page 5-2.

  • Page 39

    5 circuit description and schematic diagrams rt2048 5.2. Interface unit (module 2) 5.2.1. +5v power supply the internal power supply for the logic circuitries is generated from the internal +8v power supply, by means of the integrated voltage regulator u09. The input voltage for u09 is fed to pin 3 ...

  • Page 40

    5 circuit description and schematic diagrams rt2048 9725 view from component side with upper side tracks. View from component side with lower side tracks. Pcb rev. 25450l interface unit (module 2) page 5-4.

  • Page 41

    5 circuit description and schematic diagrams rt2048 interface unit module 2 this diagram is valid for pcb rev. 25450l 0404 page 5-5.

  • Page 42

    5.3. Synthesizer unit (module 3) 5.3.1. Vco with buffer the voltage controlled oscillator, built around the field effect transistor q18, is oscillating either on the transmitting frequency or on the first receiver local oscillator frequency, which means the receiving frequency less 15.3 mhz. To reac...

  • Page 43

    5 circuit description and schematic diagrams rt2048 rt2048 capacitors c29, c30, c31 and r49. The output from the loop amplifier is further filtered in a low pass filter formed by c36, l2, c34, and c35, to reduce the level of the reference frequency sidebands on the vco output. 5.3.7. Rx buffer ampli...

  • Page 44

    5 circuit description and schematic diagrams rt2048 view from component side with upper side tracks. View from component side with lower side tracks. Pcb rev. 25451i pcb rev. 25448m synthesizer (module 3) page 5-8.

  • Page 45

    5 circuit description and schematic diagrams rt2048 synthesizer unit module 3 this diagram is valid for pcb rev. 25451i 0820 page 5-9.

  • Page 46

    5 circuit description and schematic diagrams rt2048 view from component side with upper side tracks. View from component side with lower side tracks. Pcb rev. 25451h synthesizer (module 3) page 5-10 0820

  • Page 47

    Synthesizer unit module 3 this diagram is valid for pcb rev. 25451h page 5-11 0820 5 circuit description and schematic diagrams rt2048.

  • Page 48

    5 circuit description and schematic diagrams rt2048 page 5-12 0820 5.4. Rx/tx unit (module 4) the rx/tx unit comprises the following circuits: the receiver including detector af power amplifier rf power amplifier harmonic filter rf power control 8v power supply 5.4.1. Receiver front-end the rf ampli...

  • Page 49

    5 circuit description and schematic diagrams rt2048 5.4.9. Rf power control the power adjustment loop consists of q04, q03, q05 and q1. Q04 is the power detector which together with q03 forms a differential circuit. The differential circuit controls q05 and q01 which are made as a darlington transis...

  • Page 50

    5 circuit description and schematic diagrams rt2048 view from component side with upper side tracks. View from component side with lower side tracks. Pcb rev. 25448m 0820 rx/tx unit (module 4) page 5-14.

  • Page 51

    5 circuit description and schematic diagrams rt2048 rx/tx unit module 4 this diagram is valid for pcb rev. 25448m page 5-15 0820

  • Page 52

    5 circuit description and schematic diagrams rt2048 view from component side with upper side tracks. View from component side with lower side tracks. Pcb rev. 38-127059-a 0820 rx/tx unit (module 4) page 5-16.

  • Page 53

    5 circuit description and schematic diagrams rt2048 93-127059-b u04 ra35h1516m r68 r69 r70 1k0 2k2 0e 3.0v = 25w 2.5v = 1w rx/tx unit module 4 this diagram is valid for pcb rev. 38-127059-a page 5-17 0820

  • Page 54

    5 circuit description and schematic diagrams rt2048 5.5. Selcall unit (module 5) the input to the selcall is taken from the telephone output. The signal is first amplified and limited in u04/2 and then it passes the bandpass filter. Finally the signal is rectified and compared with a reference level...

  • Page 55

    5 circuit description and schematic diagrams rt2048 view from component side with upper side tracks. Pcb rev. 25449b view from component side with lower side tracks. 0820 page 5-19.

  • Page 56

    5 circuit description and schematic diagrams rt2048 5.6. Interconnection cable diagram rt2048b 4-0-25558b 0820 page 5-20

  • Page 57

    Rt2048 5 9 1 6 7 3 5 2 4 1 6 mc801 mic pre-amp white p803 din connector blue tc801 red yellow brown hand key s801 vhf rt2047 scrambler cry2001, re2100, rt2047 prepared for dsc and rt2048 s1 hand key yellow red tc1 mic pre-amp mc1 d-connector blue white brown shortwave s130x s1701 hand key brown whit...

  • Page 58

    6 microtelephone installation rt2048 microtelephone with electret mic. Amp. Eci a/s 4-6-24025d/4-0-24025e 600875 position description manufactor type part nr. C1 capacitor electrolytic 100uf 20% 10vdc ero eki 00 bb 310 c m0e 14.607 c2 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 sk yf 103 z...

  • Page 59

    Rt2048 6.1. Special installation with 2 microtelephones: h2086 for scrambler cry2001 and rt2048 h2087 for vhf rt2047 and ssb t2031 microtelephone one with preference page 6-3.

  • Page 60

    6 microtelephone installation rt2048 6.2. Special installation with 3 microtelephones: h2088 for scrambler cry2001 and rt2048 h2089 for vhf rt2047 and ssb t2031 microtelephone one with preference page 6-4 4-0-24804a.

  • Page 61

    Rt2048 6.3. Mechanical dimensions for handset 64 151 275 80 43 65 43 80 32 32 ø4.5 ø4.5 81 27946 mechanical dimensions for handset holder with microswitch 151 64 103 275 80 43 65 43 80 32 32 ø4.5 ø4.5 26999 page 6-5 rt2048, re2100, c2140 4-0-26999 4-0-27946.

  • Page 62

    6 microtelephone installation rt2048 9438 page 6-6 mechanical dimensions for handset ø4.5 65 80 80 32 32 4-0-29938 275 78 132 62 ø4.5 mechanical dimensions for handset holder with microswitch ø4.5 ø4.5 65 43 80 80 32 32 43 4-0-29937 275 64 151 103.

  • Page 63

    Page 7-1 7. Parts list rt2048 simplex / semiduplex vhf rt2048 standard t&t a/s vhf rt2048 (standard) 802048 position description manufactor type part no. Various keyboard foil rt2048 t&t a/s 1-0-25434c 225434 various mini 1/4 box cabinet sailor green 225435 grØn rilsan 22543500 aluminium various pow...

  • Page 64

    Page 7-2 simplex / semiduplex vhf rt2048 (rhein) t&t a/s vhf rt2048 (rhein) 842048 position description manufactor type part no. Various mini 1/4 box cabinet sailor green 225435 grØn rilsan 22543500 aluminium various keyboard foil rt2048 nederland (16) t&t a/s 1-0-25577 225577 various power cable wi...

  • Page 65

    Page 7-3 base unit rt2048 std. T&t a/s 702048 position description manufactor type part no. Various silicone seal for cabinet nord.Elektr. 0-4-25397a 48.585 632-2456-00-x various knob Ø10mm sander plast 0-3-25432a 48.693 various fuse cover sander plast tg.Nr: 0-3-25362b 48.696 various cover for alle...

  • Page 66

    7 parts list rt2048 position description manufactor type part no. C12-2 capacitor electrolytic 2m2f 20% 16vdc samhwa elec. Sv-2200uf-16wv 14.713 c13-2 capacitor mkt 470nf 5% 63vdc ero mkt 1826-447/06 4-g 11.187 c14-2 capacitor mkt 15nf 5% 63vdc philips 2222 370 89153 11.173 c15-2 capacitor electroly...

  • Page 67

    7 parts list rt2048 position description manufactor type part no. R29-2 resistor array 4x10k ohm 5% 1/8w panasonic exbf8v103g (4x10k) 08.615 r30-2 resistor mf 3k3 ohm 5% 0.4w philips 2322 181 53332 01.212 r31-2 resistor mf 100k ohm 5% 0.4w philips 2322 181 53104 01.250 r32-2 resistor mf 3k48 ohm 1% ...

  • Page 68

    7 parts list rt2048 position description manufactor type part no. C28-3 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 sk yf 103 z 15.170 c29-3 capacitor mkt 1uf 5% 63vdc ero mkt 1826-510/06 4-g 11.190 c30-3 capacitor mkt 470nf 5% 63vdc ero mkt 1826-447/06 4-g 11.187 c31-3 capacitor mkt 22nf ...

  • Page 69

    7 parts list rt2048 position description manufactor type part no. L8-3 choke 0.10uh 5% west cap 1a1003m-5% / taped 20.099 l9-3 transformer rf 110nh adjustable toko e526-110436 38.407 l10-3 choke tl489 t&t a/s 6-0-25459 400489 l11-3 choke tl491 t&t a/s 6-0-25461 400491 l12-3 choke tl491 t&t a/s 6-0-2...

  • Page 70

    7 parts list rt2048 position description manufactor type part no. R49-3 resistor mf 2k43 ohm 1% 0.6w philips 2322 156 12432 03.396 r50-3 resistor mf 56k ohm 5% 0.4w philips 2322 181 53563 01.243 r51-3 resistor mf 1k0 ohm 5% 0.4w philips 2322 181 53102 01.200 r52-3 resistor mf 221 ohm 1% 0.6w philips...

  • Page 71

    7 parts list rt2048 position description manufactor type part no. C12-3 capacitor electrolytic 47uf 20% 25vdc elna rj2-25-v-470-m-f1 14.524 c13-3 capacitor mkt 220nf 5% 63vdc philips 2222 370 79224 11.182 c14-3 capacitor electrolytic 22uf 20% 35vdc elna rj2-35-v-220-m-f1 14.516 c15-3 capacitor elect...

  • Page 72

    7 parts list rt2048 position description manufactor type part no. D6-3 diode switch factory selected mpn 3700 t&t a/s c1082a / 0-0-25550 725550 d7-3 diode switch ba282 tfk ba 282 taped 25.390 d8-3 diode switch ba282 tfk ba 282 taped 25.390 d9-3 diode capasitance 13pf/9vdc toshiba 1sv101 in matched g...

  • Page 73

    7 parts list rt2048 position description manufactor type part no. R33-3 resistor mf 30k ohm 5% 0.4w philips 2322 181 53303 01.236 r34-3 resistor mf 1m0 ohm 5% 0.4w philips 2322 181 53105 01.275 r35-3 resistor mf 330 ohm 5% 0.4w philips 2322 181 53331 01.187 r36-3 resistor mf 1k0 ohm 5% 0.4w philips ...

  • Page 74

    Syntese module rt2048 t&t a/s 93-127230-a 60-127230 position description manufactor type part no. Norton normount v1300 0.8x12mm 95.512 c1-3 capacitor mkt 0.1uf 10% 63vdc philips 2222 370 78104 11.136 c2-3 capacitor mkt 220nf 10% 63vdc philips 2222 370 78224 11.095 c3-3 capacitor polystyrene 56pf 1%...

  • Page 75

    7 parts list rt2048 position description manufactor type part no. C71-3 capacitor ceramic 470pf 10% 500vdc kck rt-hm60 sk yb 471 k 16.095 c72-3 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 sk yf 103 z 15.170 c73-3 capacitor ceramic 33pf 2% npo 100vdc philips 2222 689 10339 15.333 c74-3 capa...

  • Page 76

    7 parts list rt2048 position description manufactor type part no. R17-3 resistor mf 1k5 ohm 5% 0.4w philips 2322 181 53152 01.204 r18-3 resistor mf 18k ohm 5% 0.4w philips 2322 181 53183 01.231 r19-3 resistor mf 820 ohm 5% 0.4w philips 2322 181 53821 01.197 r20-3 resistor mf 5k6 ohm 5% 0.4w philips ...

  • Page 77

    7 parts list rt2048 position description manufactor type part no. R93-3 resistor mf 8r2 ohm 5% 0.4w philips 2322 181 53828 01.147 r94-3 resistor mf 330 ohm 5% 0.4w philips 2322 181 53331 01.187 r95-3 preset cermet 250k ohm 10% 0.5w bourns 3386p-1-254 07.895 r96-3 preset cermet 2k0 ohm 5% 0.5w bourns...

  • Page 78

    7 parts list rt2048 position description manufactor type part no. C56-3 capacitor ceramic 8p2f +-0.25pf npo 500vdc kck rt-hm60 sk 8r2 c 15.030 c57-3 capacitor ceramic 18pf 5% npo 500vdc kck rt-hm60 sk ch 180 j 15.060 c58-3 capacitor ceramic 470pf 10% 500vdc kck rt-hm60 sk yb 471 k 16.095 c59-3 capac...

  • Page 79

    7 parts list rt2048 position description manufactor type part no. R2-3 resistor mf 60k4 ohm 1% 0.6w philips 2322 156 16043 03.238 r3-3 resistor mf 33k2 ohm 1% 0.6w philips 2322 156 13323 03.232 r4-3 resistor mf 100k ohm 1% 0.6w philips 2322 156 11004 03.477 r5-3 resistor mf 221k ohm 1% 0.6w philips ...

  • Page 80

    7 parts list rt2048 position description manufactor type part no. R79-3 resistor mf 47 ohm 5% 0.4w philips 2322 181 53479 01.166 r80-3 resistor mf 1k6 ohm 5% 0.4w philips 2322 181 53162 01.205 r81-3 resistor mf 4.3k ohm 5% 0.4w philips 2322 181 53432 01.215 r82-3 resistor mf 3k3 ohm 5% 0.4w philips ...

  • Page 81

    7 parts list rt2048 position description manufactor type part no. 0820 page 7-19 c39-4 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 sk yf 103 z 15.170 c40-4 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 sk yf 103 z 15.170 c41-4 capacitor ceramic 10nf -20/+80% cl2 50vdc kck rt-he70 s...

  • Page 82

    7 parts list rt2048 position description manufactor type part no. 0820 page 7-20 l8-4 coil tl067 t&t 6-0-20854a 400067 400067=20.053 l9-4 coil rf 110nh adjustable toko e526hn-100117 38.409 l10-4 coil rf 110nh adjustable toko e526hn-100117 38.409 l11-4 coil rf 110nh adjustable toko e526hn-100117 38.4...

  • Page 83

    7 parts list rt2048 position description manufactor type part no. 0820 page 7-21 r40-4 resistor mf 560 ohm 5% 0.4w philips 2322 181 53561 01.193 r41-4 resistor mf 180 ohm 5% 0.4w philips 2322 181 53181 01.181 r42-4 resistor mf 120k ohm 5% 0.4w philips 2322 181 53124 01.252 r43-4 resistor mf 100k ohm...

  • Page 84

    7 parts list rt2048 position description manufactor type part no. 0820 page 7-22 c30-1 capacitor ceramic 22pf 5% npo 500vdc kck rt-hm60 sk ch 220 j 15.080 c31-4 capacitor ceramic 22pf 5% npo 500vdc kck rt-hm60 sk ch 220 j 15.080 c32-4 capacitor ceramic 15pf 5% npo 500vdc kck rt-hm60 sk ch 150 j 15.5...

  • Page 85

    7 parts list rt2048 position description manufactor type part no. 0820 page 7-23 j5-4 socket coax 90 deg. Pcb version taiko tmp-j01x-v6 78.518 l1-4 choke tl 487 t&t 6-0-25457b 400487 l2-4 choke tl 487 t&t 6-0-25457b 400487 l3-4 choke tl486 t&t 6-0-25456c 400486 l4-4 choke 5u6h 10% fastron smcc-5r6k-...

  • Page 86

    7 parts list rt2048 position description manufactor type part no. R35-4 resistor mf 220k ohm 5% 0.4w philips 2322 181 53224 01.258 r36-4 resistor mf 3k9 ohm 5% 0.33w philips 2322 187 73392 02.486 r37-4 resistor mf 3k9 ohm 5% 0.4w philips 2322 181 53392 01.214 r38-4 resistor mf 3k9 ohm 5% 0.4w philip...

  • Page 87

    7 parts list rt2048 position description manufactor type part no. R5-5 resistor mf 7k50 ohm 1% 0.6w philips 2322 156 17502 03.448 r6-5 resistor mf 10k ohm 5% 0.4w philips 2322 181 53103 01.225 r7-5 resistor mf 10k ohm 5% 0.4w philips 2322 181 53103 01.225 r8-5 resistor mf 10k ohm 5% 0.4w philips 232...

  • Page 88

    7 parts list rt2048 position description manufactor type part no. Q4 transistor darlington npn bc618 motorola bc618 28.107 r1/4 resistor array 4x10k ohm 5% 1/8w panasonic exbf8v103g (4x10k) 08.615 r2/4 resistor array 4x10k ohm 5% 1/8w panasonic exbf8v103g (4x10k) 08.615 r3 resistor mf 1k0 ohm 5% 0.4...

  • Page 89

    M2048gb-0.Indd iii m2048gb-0.Indd iii 18-08-2006 14:26:51 18-08-2006 14:26:51.

  • Page 90

    Thrane & thrane a/s • info@thrane.Com • www.Thrane.Com m2048gb-0.Indd iv m2048gb-0.Indd iv 18-08-2006 14:26:51 18-08-2006 14:26:51 m2048gb issue: e /0820