the 400 is set up at factory for 9 khz spacing. To change to 10 khz:
With the radio OFF, press and release the AM button once.
Immediately press and release the STEP button. "10 KHZ" now appears in
the right side of the display and will disappear in a few seconds.
The change will be permanent in the radio's memory as long as
batteries are not removed for 10 minutes or more. Use same procedure
to return to 9 khz spacing, if desired.
(there is no way anyone can figure this out without the manual)
>Immediately after I picked up a new YachtBoy 400 the manual
>disappeared. I imagine it will turn up again, but in the meantime I'd
>sure like to figure out how to change from 9 kHz channel spacing to 10
>kHz. Can anybody point me to an online manual, or just give me the
>secret -- I've tried every combination of buttons I could think of!