Digital modes for amateurradio

I started my first digital voice project in 1982 together with Hartmut, DC2BI; about 8 years before digital mobile phones came up.

May be this was the first ham digital voice project worldwide.

Unfortunately processors were too slow at these times, and there was a part - success only.

We stopped the project 2 years later.

That is the reason, that I am interested in digital voice all the time.

My experience with the ard9800 (AOR)

Some about windrm and drmdv (not up to date)

A lesson on this subject

I use Easypal and have written the german helppages (see helppages left)).