How to send binary data in netcat to an already established connection?

Question

I can do the following to send binary data in netcat:

echo -e '\x80' | nc host port

But I don't want to do it like this, what I want is to connect to a server:

nc 192.168.1.115 12345

And then send some text:

aaaaaaaaaabbbbbbbbbbccccccccccc

And then send some binary data:

0x80 0xF4 0x12

How can I do that?