I think the program you are after is called ser2net. It bridges serial streams to TCP ports of your choice. In Ubuntu / Debian do the following:
# apt-get install ser2net
then edit /etc/ser2net.conf and set up a line such as this:
2000:telnet:600:/dev/ttyUSB0:115200 8DATABITS NONE 1STOPBIT banner
and finally restart the service
# systemctl restart ser2net
The config file / man page are well documented but to clarify this will run a TCP service on port 2000, type telnet, 10 minute timeout, connected to /dev/ttyUSB0 with the relevant serial settings. I'm not sure what type of client software you're connecting to your transciever with so you may have to change the connection type from 'telnet' to 'raw' and play with the options, remove the banner etc.