The new frontier?
These days Amateur Radio is broadening its horizons considerably towards
the low and high frequency ends of the spectrum. Recently I participated in
Steve VE7CA's 473kHz 630m crossband night November
1st UTC. Earlier this year I had my first QSO on Infra-Red.
I made a Video and PDF about Light Wave basics:
1. A video about Light Wave Communication.
2. Light Wave Communcation
My Light Wave Gear:
Below I have some photos of my Infra-Red gear which I used to QSO with VE7SL,
who was 70Km away and at sea level, from about 300m on a nearby mountain (to
guarantee our first try would work!). We had very strong signals both ways
using MCW. I could even see the red light flashing by eye! Code copy was
considerably easier using the MCW receiver though! The gear was not difficult
to build and expensive.