The worst I've encountered is the very audible signal from the adjacent turn
so to speak.
I wonder what your sample had been played on though.
Brian

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Don Pearce wrote in message news:4992beba.108434515@localhost...
I was interested in how heavily modulated vinyl could be, so I popped
an old record (Long Hot Summer Night, Jimi Hendrix, Track Records
1968) under the microscope for a look. And what did I find? Two
adjacent grooves clearly broken into each other:

http://81.174.169.10/odds/grooves.jpg

Was this a really common back then, or is this kind of thing a rarity?

d