
60
Raider Installation and Operation Rev. 1.4.2
GE Master II Repeater Interface (800MHz) - page 1 of 2
The GE Master II Repeater can be modified to allow the Raider to be connected and function as
an LTR repeater. Remove all plug-in cards from the repeater
except
the 10 volt regulator card. This
card is required to supply power to the repeater.
Modifying the Exciter
Locate the exciter and remove the TX ICOM module from the repeater. Remove the set HEX screw
and carefully open the case and remove the insides. Connect a 1/8W resistor with a value of 47K
ohms to 100K ohms (1K on TCXO) to the point shown and connect the other end to Pin 4 of the
ICOM module. Make sure the resistor does not short to anything else, use tape to insulate if
necessary. Assemble the ICOM module.
Remove the exciter PCB and locate the ICOM module. Cut the etch on the TOP of the PCB around
Pin 4 of the ICOM pins. Test the pin with an ohm meter to be sure it is free of ground. Solder a wire
to the pin on the bottom of the PCB and reassemble the exciter PCB making sure the wire isn't
pinched. Connect the other end of the wire to a spare pin on P8/J933. This will be the TX data input.
NOTE:
The frequency will now be slightly different. The ICOM will, therefore, need to be adjusted!
NOTE:
For UHF applications, call Trident tech support at 800-798-7881.
Modifying the receiver
The Raider must be directly connected to the GE discriminator. Due to the low frequency response
of the LTR data, a connection to the receiver is required for reliable handshaking.
Locate the receiver IF-AUDIO-SQ PCB inside of the repeater housing. Attach the center of the
shielded cable to the R607 exposed end as shown. Solder the outer conductor to the metal shroud.
Route the wire out through one of the existing holes and follow the wiring harness up to the
backplane and connect it to the Raider.
Pin 4
Add resistor
GE ICOM Temperature
compensation
solder side
Pin 4
Add resistor
GE ICOM TCXO (Oven type)
solder side
R607
Connect wire
hot here
L604
Connect wire
shield here
Master II
IF-Audio-SQ board
Содержание Raider
Страница 2: ...2 Raider Installation and Operation Rev 1 4 2 ...
Страница 3: ...3 Raider Installation and Operation Rev 1 4 2 ...
Страница 8: ...8 Raider Installation and Operation Rev 1 4 2 ...
Страница 49: ...49 Raider Installation and Operation Rev 1 4 2 NOTES ...
Страница 71: ...71 Raider Installation and Operation Rev 1 4 2 Fig 7 Fig 8 Motorola MTR2000 Repeater Interface page 6 of 10 ...
Страница 79: ...79 Raider Installation and Operation Rev 1 4 2 Fig 4 Motorola GR1225 Repeater Interface page 4 of 5 Fig 3 ...
Страница 94: ...94 Raider Installation and Operation Rev 1 4 2 ...