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SPECIFICATIONS
      Owner's Manual

RADIO MODIFICATIONS
      DX22B Frequency Conversion
      Clarifier Mod

ALIGNMENT PROCEDURES
      PLL Alignment
      Transmitter Alignment
      Receiver Alignment

SEMICONDUCTOR INFORMATION
      Transistors Voltage Chart
      Semiconductor Datasheets

DIAGRAMS
      DX22B Schematic Diagram (Mar. 09, 2001)

PCB Layouts and Parts
      Main PCB Layout (EPT295013Z)
      Push Button PCB (EPT295031Z)
      Power Supply PCB (EPT0SSB61A)
      Power Input PCB (EPT0SSB91Z)
      Channel Selector PCB (EPT295090A)
      Clarifier, Squelch, Vol. VR PCB (EPTSSB130A)
      RF Power, ECHO, TIME VR PCB (EPTSSB120A)
      Calibrate VR PCB (EPTSSB150A)
      MIC GAIN, RF GAIN VR PCB (EPTSSB140A)
      LED PCB (EPT0SSB20Z)
      EAR Jack PCB (EPTSSB180A)
      SWR PCB (EPT360040Z)
      ROBOT / ECHO PCB (EPT0SSB50C)
      CPU PCB (DPT295040Z) Early Production
      CPU PCB (DPT295042Z) Late Production
      MIC JACK PCB (EPT295070Z)
      MODE Switch PCB (EPT295090Z)

Stock Mic Wiring Diagram

Mic Wiring

1. Ground Shield
2. Audio Yellow
3. Transmit Red
4. Receive Black
5. CH. Up White
6. CH. Down Blue

TURNER 4-WIRE MIC. WIRING
1. Ground Shield
2. Audio White
3. Transmit Black
4. Receive N/C
5. CH. UP N/C
6. CH. Down N/C

TURNER 6-WIRE MIC. WIRING
1. Ground Shield & Red
2. Audio White
3. Transmit Blue
4. Receive N/C
5. CH. UP N/C
6. CH. Down N/C

ASTATIC 4-WIRE MIC. WIRING
1. Ground Shield
2. Audio White
3. Transmit Red
4. Receive N/C
5. CH. UP N/C
6. CH. Down N/C

ASTATIC 6-WIRE MIC. WIRING
1. Ground Shield & Blue
2. Audio White
3. Transmit Red
4. Receive N/C
5. CH. UP N/C
6. CH. Down N/C