AS1 - Audio Squelch Board

The board has a Micor squelch circuit, Rx and Tx audio buffering and PTT buffering.  The board has mounting holes for a GE MVP and GE Century radio as well as mounting holes in the corners for whatever else you want to put it in.  The circuit is basically a reformulated Dillo 1016.

The connectors on the left side ( a 10 pin header or DB-9 ) are for external connection to the control system.  The connectors on the right side are (top) for plugging into a PL encoder / decoder and (bottom) for interface to the radio itself.  One advantage of this board over the 1016 is that all connections go through header connectors so you can just unscrew the board, lift out the headers and swap the board.  Easy to field replace the unit.

Rev B - Production Version PCB  info

AS1 documentation file in .pdf format

AS1 Rev B schematic database

AS1 Rev B PCB Layout picture

AS1 Rev B BUILDERS ALERTS

Radio specific component values

AS1 Rev B documentation with parts placement diagrams

Click here to download schematic viewer
To modify the schematic viewer to show black lines and components rather than colored lines edit the dw.INI file found in the \program files\DesignWorks Viewer\ folder with a test editor as follows...
Change PrinterColors=Yes                 to PrinterColors=ToBlack
Change Signal_Col=Red                    to Signal_Col=Black
Change DeviceAttrs_Col=Magenta    to DeviceAttrs_Col=Black
Change SignalAttrs_Col=Magenta      to SignalAttrs_Col=Black

Rev A - Prototype PCB  info

Picture of the AS1 prototype PCB versioin A in a GE MVP

Download the word file with parts placement and component list  for the Rev A board

AS1 Rev A prototype BUILDERS ALERTS