Wow, I have both the mm2 and mm3 A.E.A keyers and they're special and I am sentimental about them. For many years I use to send code practice over 2 meters and HF with either one of those keyers and they're
both excellent. The mm3 has old DR. qso which would simulate a qso and it actually worked! So, if anyone has those manuals scanned or in some electronic format I'd be very interested indeed also!