Ok, no luck really.
First my full setup.
I have a Sending Station:
Uno R3
Powered by wall plug adapter
1 wire connecting the 3 pin to the 2 pin on the Receiving Station
1 Wire connecting the GND to the GND on the Receiving Station
I have a Receiving Station:
Uno R3
Powered via USB to computer
Connections as described above
No other connections on either Station.
The new Serial Monitor output looks like this:
56
57
57
57
57
57
57
57
57
57
57
49
49
50
51
52
53
54
55
56
57
55
55
56
56
56
56
56
56
56
56
56
56
57
57
57
57
57
57
57
57
57
57
49
49
50
51
52
53
54
55
56
57
54
55
56
57
49
48
49
49
49
50
49
51
49
52
49
53
49
54
49
55
49
56
49
57
50
48
50
49
50
50
50
51
50
52
50
53
50
54
50
55
50
Different, but still doesn't look like 1-100 repeating.
Even if it's giving the ascii equivalent of the char they don't repeat properly, I don't think.
I would expect every 3rd value to be the 'end' value.