[Hamlib-developer] Model 2051 dump explanation please

[sramp <sra...@gm...>]

Hello Georgina,

I currently use SDRuno and hamlib and it works well.

SDRUno, being a software application, doesn’t directly connect to physical
serial ports. To enable communication between SDRUno and other software
that uses serial communication (like hamlib), a virtual COM port is used as
an intermediary.

A null-modem emulator is a software tool that emulates the behavior of a
null-modem cable, which is traditionally used to connect two serial devices
(like computers or devices with serial ports) for communication.

To create a virtual COM pairs it is possible to use a null-modem emulator
called com0com.

Instead of using physical serial ports and cables, com0com creates virtual
COM port pairs. These are pairs of virtual serial ports that are connected
to each other as if they were physical ports with a null-modem cable in
between.

For example, if you create a pair COM4 <-> COM5, data sent to COM4 will be
received by COM5, and vice versa.

 In the example of COM4 <-> COM5:

     – SDRUno communicates with the virtual COM port COM4.

     – COM4 is part of the virtual COM port pair created by com0com.

     – COM5, the other end of the pair, is connected to hamlib.

     – Therefore, SDRUno <-> COM4 <-> COM5 <-> hamlib forms a complete
communication chain.

In summary, the null-modem emulator (com0com) is used to create virtual COM
port pairs, allowing SDRUno to connect to a virtual COM port, which is then
linked to hamlib through another virtual COM port, establishing a
communication path for controlling amateur radio equipment.

You can find more step by step instructions to connect SDRuno in my web
site at this link https://sramp.com/?p=556