Data

摘要

Murray Greenman, ZL1BPU, reports on several software packages for data modes by ZL2AFP, mainly for weak signal working and propagation monitoring. All are available for free download, see websearch. The various software packages are:rnA narrow-band chat mode designed for use on the low HF bands under NVIS conditions. Sensitivity is very good and the mode is, by design, immune to mistuning and drift. It is very robust, being tolerant of severe Doppler and multipath propagation problem and gives excellent reception even without optional forward error correction.