RF Technology Eclipse Repeater &
Trident Micro Systems NTS/ Passport Controller
Cable Pin Out Description for NTS and Dual Repeaters
DB-25M
Description
1
RX Disc Aud
2
TX Audio
3
TX Data
4
TX PTT
-
Com. Alarm
9
Audio Ground
12
(Shield N/C)
DB-25M
Description
14
RX Disc Aud
15
TX Audio
16
TX Data
17
TX PTT
-
Com. Alarm
22
Audio Ground
25
(Shield N/C)
NOTE: Shield wire is connected to Ground at Repeater end ONLY
Eclipse Transmitter Setup
Item
TL
Set JP4 for Pins 1 and 2 (shorted, up position) ie HiZ input – Audio in
TL
Set JP6 for Pins 2 and 3 (shorted, other position) ie 20dB attenuated
TL
Remove jumpers JP9, JP10, JP11. Disables the dc loop switching.
TL
Remove JP8, not required.
PD
Remove R46 (10K), C39 (1N0), C116 (1uF), R127 (470K)
Replace R127 with 1M Ohm resistor
Using the wire specified, connect Pin 6 of JP8 to the junction of C116 and
R127 (which is adjacent to screw mounting hole). Secure the wire with
tape or silicone adhesive
Eclipse Receiver Setup
Item
TL
Remove jumpers JP7, JP8, JP9. Disables the dc loop switching
TL
Locate C35, 0.47uF capacitor on pcb (U3 pin 6 to U2 pin 5) and replace
with 1uF polyester capacitor (if not already done)
TL
Apply RF signal to RX antenna port (channel frequency) @ -70-100dBm.
FM modulated with 1000Hz @ 1.5KHz of deviation
TL
Adjust Discriminator Audio level control RV1 (located near U2) to
1.1V p/p for Trident Raider
Eclipse/TMS trunking
Y-CABLE (1 x DB25M to 2 x DB25M)
NTS
Colour
Yellow
Blue
Brown
Purple
White
Green
Ground
Black
NTS
Colour
Yellow
Blue
Brown
Purple
White
Green
Ground
Black
N/C = Not Connected
Trunking Card REPEATER 1
DB-25M
20
19
7
6
4
13
25
Trunking Card REPEATER 2
DB-25M
20
19
7
6
4
13
25
Serial No:
Description
Serial No:
Description
1
Links
Description
PS4-Disc
RX p18 Disc
PS3-HiZ
TX p4 HiZ[+]
-
TX p18 Tone[-]
-
TX p3 PTT
-
RX/TX Alarm
0V Ground
Shield
0V Ground
connect
Links
Description
PS4-Disc
RX p18 Disc
PS3-HiZ
TX p4 HiZ[+]
-
TX p18 Tone[-]
-
TX p3 PTT
-
RX/TX Alarm
0V Ground
Shield
0V Ground
connect
Freq:
Freq:
Check
Check
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