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Norfolk to Lord Howe Island Great Circle Distance

On March 31st 1931, Sir Francis Chichester left the Northern Tip of New Zealand on an East to West flight across the Tasman sea. He stopped to refuel at Norfolk Island and Lord Howe Island. Let’s determine the great circle distance and bearings that his Gypsy Moth float plane Madam Elijah ZK-AKK had to fly […]

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Telecommunications

Balcony ATSC HD Television

For some time I have wanted to see how many television channels I could receive from the CN Tower in Toronto. I can clearly see the TV antenna at the top of the tower from my apartment balcony, although it is boxed in on both sides by buildings. The 7.6Km Google Earth path is shown […]

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Telecommunications

RTL-SDR for Weather Radio

A simple RTL-SDR receiver can be used to receive marine weather forecasts. The unit is small and inexpensive (approx. $25). It can be controlled by using the software program SDR# or other similar programs. The picture above shows my unit plugged into the usb port on the left side of my laptop, the display shows […]

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Navigation

Intercept at Trillium Park Lat = 43.6296degN Long = 79.4095degW

“I must go down to the seas again, to the lonely sea and the sky, And all I ask is a tall ship and a star to steer her by;” from Sea Fever by John Masefield Currently I am calibrating my 3 sextants from several known locations in Toronto. One requires a water horizon and […]