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 signal is taken on the earpiece from the receiver unit and led to the microphone input
of the transmitter unit. No attenuation required. The key for the transmitter unit is taken from the special option
board, Delay Key Option, to get the transmitter unit keyed approx. 10 seconds after last received signal.
Seen from component side with upper side tracks.
626622
4-0-26622
12 MUTE AF-AMP
11 KEY
10 MIC. OUT
9 MIC. IN
8 EXT. MUTE LS.
7 +13V INT.
6 DISTRESS
5 GND
4 TELEPHONE
3 AUX II
2 AUX I
1 ALARM
1
2
3
4
5
6
7
8
9
10
11
12
470
150
1M
R2
R1
R3
C1
C2
10uF
470p
T1
BC548
T2
BC548
1n
C3
C4
100n
P01
DELAYED KEY OPTION (6)
NC
Page 2-10a
9520
2 INSTALLATION
RT2048
DELAYED KEY OPTION MODULE (6) RT2048
ECI A/S
5-0-26622/2-0-25473A
626622
POSITION
DESCRIPTION
MANUFACTOR
TYPE
PART NO.
C1-6
CAPACITOR ELECTROLYTIC 10uF 20% 25VDC
ELNA
RBL-25-V-100-M-V2Z-T58
14.661
C2-6
CAPACITOR CERAMIC 470pF 10% 500VDC
KCK
RT-HM60 SK YB 471 K
16.095
C3-6
CAPACITOR CERAMIC 1nF 10% 50VDC CL2
KCK
RT-SK-HE50 SJYB 102 K
16.160
C4-6
CAPACITOR MKT 0.1uF 10% 63VDC
PHILIPS
2222 370 78104
11.136
J1-6
PLUG 1/10" SIL 12 POLES
EURO
DIP SL 12 O Z
78.328
R1-6
RESISTOR MF 470 OHM 5% 0.33W
PHILIPS
2322 187 7347
02.464
R2-6
RESISTOR MF 150k OHM 5% 0.33W
PHILIPS
2322 187 73154
02.524
R3-6
RESISTOR MF 1M OHM 5% 0.33W
PHILIPS
2322 187 73105
02.544
T1-6
TRANSISTOR AF BC548 NPN TO-92
PHILIPS
BC548 (-A/-B/-C)
28.070
T2-6
TRANSISTOR AF BC548 NPN TO-92
PHILIPS
BC548 (-A/-B/-C)
28.070
Summary of Contents for RT2048 VHF
Page 1: ...INSTALLATION MANUAL SAILOR RT2048 VHF ...
Page 4: ......
Page 11: ...1 INTRODUCTION RT2048 Page 1 7 9403 BLOCK DIAGRAM ...
Page 12: ......
Page 22: ...2 INSTALLATION RT2048 Page 2 10 9346 626945 625473 ...
Page 24: ...2 INSTALLATION RT2048 2 8 REAR VIEW OF VHF RT2048 25567 9350 Page 2 11 ...
Page 26: ......
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 38: ...5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RT2048 Page 5 2 ...
Page 89: ......
Page 90: ...Thrane Thrane A S info thrane com www thrane com M2048GB Issue E 0820 ...