User's Manual Part 5

  !"#$% 
  
b Solder the chip capacitors onto the replacement transistor PCB, in the positions
shown. Refer to the table below for capacitor values and the distance ‘d’.
 The distance ‘d’ shown in Figure 8.3.3 is measured from the edge of the transis-
tor top cap to the centre of the capacitors.
c Solder the 2 SRF16 resistors in the positions shown. Keep the leads as short as pos-
sible and ensure the resistors do not cause a short circuit.
5 Replace the radio type label and type approval certificate number label on the
heatsink fins with the new type label and corresponding type approval certificate
number label.
 ;4
1 Adjust RV324 to set the required output power level.
 If the output power is set to 1W for RF control purposes, program the radio for
high power and adjust RV324 for 1W.
2 Seal RV324 with permanent adhesive so that the power cannot be readjusted.
 
Frequency Range:
T2000-500 .. 400 to 470MHz
T2000-600 .. 450 to 520MHz
Supply Voltage .. 0.8 to 16V DC
Power Output .. adjustable 1 to 7W
Temperature Range .. -30°C to +60°C
Stability (power output set to >1W) .. transmitter stable into 5:1 VSWR
(all phase angles)
* d is 13mm if Q305 is a BLW81 transistor
T2000-500 T2000-600
Capacitor Value 22p 18p
Distance (d)
14.5mm
*
11.5mm