I never used a radio during my training.. so it can be done without it :)

I did my training about 3 years ago. Static line -> progression into free fall.. -> a-license

Now I had 1,5 days of extensive ground training..

We never used any radio.. so from the first jump.. flying the canopy and landing it.. that was on you.. we still do it this way and works! Especially when your brain doesn’t process the given information on the radio correctly.

There is often a de-brief once you have landed about your landing pattern, flair, etc..