|Some time ago, Museum Jan Corver announced that it
had plans to develop an APRS modem and make it available as a DIY building kit.
Arno PE1ICQ and Jeroen PE1RXQ have designed an APRS modem that can
be fitted directly into the Bosch
KF161 rig. The circuit is quite similar to the popular TinyTrak modem, but both the PCB and the
software have been redesigned completely from scratch. The KF161-Tracker is now
available as a building kit from the Museum. Any changes to the manual,
enhancements, bugfixes, etc. will be made available through this page.
|This is one of the first prototypes of the
KF161-Tracker. The PCB can be fitted directly in place of the 'selective
tone unit' (5TVO) of the KF161. The connectors at both edges of the PCB were
taken from this unit. |
It's a double sided PCB, with solder mask and silk screen (white text). As we've only used standard 'through hole' components (i.e. no SMD) it can be built by virtually anyone. At the centre of the PCB is the Microchip microprocessor, a PIC16F628.