All Details & GPS Waypoint

Member's Comments on Telegraph Hill...

• Chris Pearson says...
• From London to Portsmouth is about 60 miles. The year is 1796. What was the shortest time in which you could send a message and get a reply between the two towns? The answer is fifteen minutes using telegraph apparatus on hill tops (about 10 mies apart)A shutter telegraph station had six pivoted boards, which could be swivelled by the ropes leading down to the cabin, so they were either visible or edge-on. Six shutters gives a 6-bit binary code, allowing 63 non-zero states to be transmitted. These were allocated as the 26 letters of the alphabet, ten numerals, and some useful preset sentences, such as "Defeat the French Navy immediately".(!) Data-compression was used in the form of omitting the vowels in common words. The preparatory signal could be sent from London to Portsmouth, and be acknowledged in two minutes; an early version of the "ping".
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Telegraph Hill's Ten Nearest Neighbouring Hills...

Apple Down (1.1km)Compton Down (1.8km)Harting Downs (3.5km)Beacon Hill (4.2km)West Harting Down (4.3km)Chalton Down (4.9km)Oakham Hill (5.2km)Torberry Hill (5.4km)Bow Hill (5.5km)Head Down (6.4km)

Telegraph Hill has been climbed by...

Adrian Andrew Brown Areluctant-triggeR Chris Pearson daveyf2001 Denise jonglew oakesave PaulOnFoot PeterD PGCE rhw Sprog stevent0809