I found a tip to clean a tape signal on a Zx81 !
Connect the tape reader on the "EAR" input.
Connect the tape recorder/computer on the "Mic" output.
Type ins this program:
Code: Select all
1 REM HELLO...
2 POKE 16514,0
3 POKE 16515,219
4 POKE 16516,127
5 POKE 16517,211
6 POKE 16518,127
7 POKE 16519,24
8 POKE 16520,249
9 RAND USR 16514
The ZX81 will copy the input program, to the output recorder… with a cleaned signal ...