We have been working for some time, designing a more complete prototype Arctic Tracker. The plan is to produce up
Tracking, internet and igate
I have been busy hacking the tracker. Now it can connect to a server on the internet, it can function
Working with the WIFI module
The Arctic Tracker lab model has a main microcontroller unit (Teensy 3) and a ESP-12 WIFI module. Now, can we
Assembling and testing the tracker lab model
The picture above shows the PCB for the Arctic Tracker with most parts mounted. It was straightforward to solder the
The quest for open software for the ADF4351
It seems the ADF4350/ADF4351 is a versatile little RF synthesizer, ranging from low VHF to well into the microwave spectrum.
Designing a lab model
The Arctic Tracker project is not dead (yet). The idea is to develop a tracker device with traits like these:
Receiving APRS packets
Receiving and decoding of APRS packets is now implemented and it seems to work. It is more tricky than sending
Transmitting APRS packets
APRS packet transmission is now tested and it works. It is clear that the SA818 radio module is not usable
Linking Yaesu DR-1X repeaters without expensive hardware
My club has two DR-1X repeaters on the same site. One is on 2 meters, the other on 70 cm. We
Interfacing the DR-1X Repeater
The documentation for the Yaesu DR-1X repeater has a number of shortcomings. This post will describe my findings so that