Need to send Nordic FOB signals from laptop

I’m remotely controlling Attiny based hardware using the Nordic Fob, and a transceiver. It’s up and working. So, I have the AVR development software and programmer–that’s what I used for getting the software on the receiver hardware working.

I’d like to send the same signals the FOB sends using a laptop. What’s the easiest way to do that?

I have a Nordic Serial Interface Board. I bought it for this application, but it seems it’s really intended to provide a wireless serial interface between two PCs. But, would it make sense to run my on own software on this hardware to transmit the same signals the FOB does?

Looking for a way I can buy hardware, develop software if needed.

Thanks,

Dave Thomas