Not many people may know it, but the last commercial Morse Code
maritime transmission in the U.S. was sent from Half Moon Bay on
July 14, 1999. The official Reuters article is reproduced here:
It's Taps For U.S. Telegraph By Andrew Quinn SAN FRANCISCO
(Reuters)
It's finally taps for U.S. ship-to-shore telegraph, drowned out by
the high-speed chattering of satellite communications, high
frequency radios and e-mail. Globe Wireless, an 89-year-old
California communications company, Monday sent out what it billed
as the last commercial maritime Morse Code message from North
America, a terse sign-off that repeated The first words transmitted
by the telegraph's inventor, Samuel F.B. Morse, 155 years ago:
``What hath God wrought?'' The message, sent from Globe Wireless'
KFS Marine station at Half Moon Bay south of San Francisco, marked
a muffled end to the U.S. tradition of commercial radio telegraphy,
famous for the dots and dashes of Morse Code, company official Tim
Gorman said Tuesday.
Well, Half Moon Bay is a bit too far for me to drive and
maintain this cache, so I picked an easier spot for me to get to.
Moss Landing is the location for this cache, and at one time they
had a transmitter that transmitted the call letters that are the
namesake of this cache for maritime navigational purposes.
Ironically, it is the advent of computers and GPS that have
rendered such stations obsolete.
To complete the coordinates above, you'll need to click on the
links below and listen to the .wav files and attempt to decipher
the code. I recorded the code at a relatively modest 10 WPM (the
second lowest setting), so if you can imagine, an experienced Morse
Code operator can decipher this gibberish 
at three times that speed.
Important Note: The area near the cache site is fenced off for
dune restoration work. If you find yourself being led into the
restoration area, you need to recheck the coordinates. The cache
area is well away from these areas, and no fence hopping is
necessary.
Quick Note: After getting an email from DavidT21 &
Fisherwoman, I thought it best to downgrade the difficulty a tad.
It's really not that hard of a puzzle. I'd appreciate further input
from finders on how hard they thought it was. BTW D&F have a
similar cache in the Bay Area (GCH05E) that was created before this
cache, if you happen to be up that way. There's is a bit harder
than mine but along the same lines.
Click here for
Northern Coordinates Sound File
Click here for
Western Coordinates Sound File