INTERFACE FOR HAMCOMM AND JVFAX SOFTWARE

The contents of this design package are protected by copyright laws, you may distribute the contents for non-profit use as long as all files are included and not modified. If you would like to use any or all of the contents commercially or for reproduction in a publication, please send me an email (bo.eriksson@bigfoot.com) describing your intended use and I will comment on how to proceed.

The HAMCOMM.ZIP includes the following files:

HAMCOMM.GIF   Circuit diagram
HAMCOMM.PRN   PCB layout
HAMCOM75.JPG  Photo of assembled board

The print file for layout shall be handled in the following manner. The files can be sent to any laser printer compatible with HP laserjet at 300dpi resolution. Use the DOS command TYPE to send them to your printer, for example:

  TYPE HAMCOMM.PRN >LPT1

Load the printer with semi-transparent plotfilm (laser proof) and you will get a photo-etching film that you can use directly in a positive process. An exposure time of 6-7 minutes is common, but also depend on film and lamp of course.

No other descriptions or support for this project is available from me.

Good luck with your home-brewing!

Bo Eriksson
SM6MDH
Sweden