21
SEARCHING UNDERWATER
The CZ-20 is waterproof to 250 feet, and it operates the same
underwater as on land. However, some differences in search
technique should be noted.
1. Tune your CZ-20 underwater on the bottom as
instructed on p. 9. Many divers prefer to use the
Autotune mode, in which case you may want to
run your threshold tone slightly higher than you
would on land. If you’re wearing a hood, you’ll
probably have to turn the volume control to
maximum.
2. Keep the coil as far away from you (and your
dive gear) as possible. Sweep the search coil
back and forth in a wide semicircle in front of
you to cover the bottom in a methodical
manner.
3. Keep the coil parallel and as close to the
bottom as possible. Overlap your sweeps at least
50 percent.
4. Recheck your ground balance every 5 to10
minutes.
5. Remember, observe all the rules of safe diving.
Move slowly, keeping the search coil away from
your dive gear and as close to the bottom as
possible.
NOTE: Keep the search coil away from your metal dive gear.
Search slowly, overlapping your sweeps with your coil as close
to the bottom as possible.
Move slowly, keeping the search coil
away from your dive gear and as
close to the bottome as possible