Davac 4.0 OK1ZIA

Davac 4 was succesfully built by OK1USW, OK1UGE and OK2JTB.

Circuit diagram

PCB

PCB bottom side (600 DPI)
Components placement top
Components placement bottom

Note: 600 DPI have images in Full resolution, MediaWiki uses thumbnails.

PCB www.hamshop.cz

Ondra OK1CDJ has made PCBs and offers it at www.hamshop.cz. Many TNX!

Errata

Jack holes are slightly smaller - user Dremmel milling cutter
Parts values would be shown - use schematic

Parts

Transformer TR-1/1 www.tme.eu

Jack 6.35 K3606D www.gme.cz or K36092B

White connectors for cable pins

Black connectors for cable flat cable

Program the FT232R

As default, the FT232R acts as serial port. But Tucnak uses Libftdi to access it in bitbang mode. Default VID:PID must be changed to distinguish Davac from other USB serial ports.

Linux

I'm pretty sure you can use ft232r_prog. But I have no experiences with it. It you try it, please let me (OK1ZIA) know, I will update this information.

Windows

Under Windows, use MProg. Download File:Davac4.ept and open it in MProg.

Unplug all other FTDI devices and press the Program All Existing Devices button.

Install USB drivers

Linux

You have nothing to do, It will work automatically. Only on specific distributions you may have to set permissions to USB device, which is normally done by udev script.