MEPT - a WSPR beacon

VERSATILE WSPR BEACON for MOBILE and FIXED applications

MEPT = Manned Experimental Propagation Transmitter

It took me a couple of month - but now it's (almost) ready.

A versatile beacon concept that consists of a number modules that can be combined according to the application.

Connectors:

• USB interface to connect to a Windows application for configuration
• serial interface to attach a GPS mouse
• SPI bus to interconnect the modules
• ICSP for in circuit serial programming of the PIC processor

Features:

• Configuration software for Windows
• Beacon runs independent from PC
• Time and Location can be derived from GPS signal
• Autonomous generation of WSPR data string in local microcontroller
• Up to 8 different filters selectable through filter switch box
• Up to 4 Attenuator networks selectable through attenuator switch box
• Multiple DDS & PA modules attachable to one controller
• DDS & PA module for 1.8-50MHz with up to 15W

At the moment there are two modules. The CPU box with a DDS/PA module and a switch box that can hold up to 8 filter and one attenuator modules

Here you can find an overview of the possible configurations

MEPT CONFIGURATIONS

A detailed description of the individual modules can be found here

MEPT CPU

MEPT switch module

I have a long list of improvements and additions I want to create to my beacon system. Here is a list of my plans (Although I don't know yet where to find the time to do all that)

MEPT_Development_Plan

Weiter Informationen: http://www.oe1ifm.at/