Total posts : 45366
Hams use the 20 meter band for DX (long distance) operations. The 22 meter band is close enough to the 20 meter band that the characteristics are essentially the same.
Local point to point communication on the 20 meter band is not what it is about. My experience is with 280 watts PEP on SSB and 20 miles is about it and that is where both stations have good antennas and receivers. It is probable that the local range of such a part 15 transmitter and antenna would be comparable to what we have in the AM broadcast band. It would be great if someone who uses this band (and I know you are out there) could comment on their experiences for local coverage. The “magic” of 20 meters comes from the skip or reflection off the ionosphere and not the groundwave propagation. I have worked world wide on this band.
Hams operate what is known as QRP (low power), sometimes involving only milliwatts of power and make contacts thousands of miles away. This is not the norm but it can happen.
As Rich pointed out earlier here, who will be listening? Perhaps if you establish a beacon with CW ID 24/7 someone might come across your signal and QSL (acknowledge receipt).
These are just some of my random thoughts on the subject but I hope they put it into perspective.