3 Years later after my comment on the frequency tone, after few research about the facility, this foghorn is NOT IN USE anymore and the "Speaker Tannoy Room" was dismantled/destroyed, he was right next to the helipad, now it's a bare concrete empty place, SHAME !!!! Only the "Engine Room" was stay in place with some minor modification, at 0:14, exhaust pipe on right of the room (next to the windows) + warning sign on door was removed. PS : I'm going to recreate this foghorn sound with real electronic hardware (Replacement of Engine, Generator, Alternators and Coders) with timer for the blast timing (on/off) and Power Amplifier, for those who are interested in this, I can share my development for free :)

I had no idea that Tannoy built systems for this application. ! But being leaders in Horn loaded PA systems. for decades, why not !

is this fog signal still in operation

Thank you for posting this series. Perhaps now the entire production can be posted.

Cloud is ok

is this fog horn still in use now

uslhs.org/sites/default/files/attached-files/1881%20Instructions%20to%20Keepers.pdf

Sounds like some old biddy fell asleep whilst playing a church organ

had to be a terrifying thing when a lighthouse gets hit by a wall of water that one is not sure if its about to crumble on top of them. not for me.

Bunch of wankers

That echo is creepy.

I like this one! it smells to me like a fresh summer day after a rain storm, and tastes of fresh mangoes!

Why would it need an alternator room if the signal is electric?? And what kind of alternators are those? Look like turbines to me.

This is s foghorn, chaps: kzfaq.info/get/bejne/hNSdjNmcrLytaXk.html

For those who want to recreate this sound, try this frequency -> 415 Hz + 565 Hz + 725 Hz

Cool. Been fascinated about lighthouses recently, seems like a job I would love!

OMG sounds creepy af

Sounds like a whistle.

Loved Alderney possibly the best 2 months of my time with Trinity House.

Yay a recording of another tannoy type fog horn. I only know of one other, where the tannoys are built into the lighthouse tower

The means of escaping a tower lighthouse when I served was a coir rope tied to the gallery rail.On one tower we tried to undo the rope but it so old it stayed coiled and when we eventually straightened it and threw it over the side it was about 15 feet too short. Glad I never had to choose between being burnt, breaking my legs in a 15 foot drop or drowning because the rock was under water, Health and safety? Happy days though.

Skokholm in the background. Can't get that viewpoint any more due to lack of cliff!

Gerry Douglas - Sherwood Temporary Principal Keeper Checks operation