3B8FO conducted some very successful digital mode tests using vara of winlink this morning on the following bands 15,20,30,40m.
Tests were carried out with winlink Radio mail server (RMS) of 3B8DU.
Power used was 10W and antenna was NVIS inverted -L 160m multiband with MFJ auto-ATU.
Software used is winklink express which can be downloaded from https://www.winlink.org/WinlinkExpress.
Winlink express is a free software used for hf mail and P2P standard emcom file transfer .To prevent the nagging registration reminder you better get a registration key for 24$ .
For the time being we have two sysopt RMS 3B8 land station ,3B8DU and 3B8FO.
You will get detailed info about vara from the link https://rosmodem.wordpress.com/2017/09/03/vara-hf-modem/
You can get interesting info about Modern Digital Modulation Techniques from
http://www.electronicdesign.com/communications/understanding-modern-digital-modulation-techniques.