I have observed an apparent interoperability problem between FoxTrak tracker and Argent Data’s OT3.
Tests have revealed that two FoxTrak’s are not decoded by two OT3s. Continue reading Interoperability of FoxTrak tracker and Argent Data’s OT3 – Part 1
This article explains a method of setting the tx audio level of a Foxtrak using an SSB/FM receiver exploiting Bessel zeros to calibrate the modulator. Whilst the Foxtrak is used in this example, the method can be used with any tracker or TNC that allows single modem test tones to be transmitted. Continue reading Adjusting Foxtrak tx audio using an SSB/FM receiver exploiting Bessel zeros to calibrate the modulator