History of Portsmouth city to new developments such as Paulsgrove and Leigh Park. On 4 July 1968, an estimated 250,000 people witnessed the return of Alec Rose, a greengrocer in Osborne Road, after he completed his single-handed circumnavigation in "Lively Lady"; he was immediately knighted and made a Freeman of the city. 400 motor-boats, yachts, catamarans and canoes welcomed him into harbour. The University of Portsmouth gained university status in 1992 In 2003 erection was started of a 552 feet high Spinnaker Tower sited at Portsmouth Harbour, and celebrating the city's maritime tradition. Completed in 2005, the tower has twin concrete legs meeting
Frequency of optimum transmission between two specified points on Earth. Synonyms for this term include: Frequency of optimum transmission Frequency of optimum transmission (FOT), in the transmission of radio waves via ionospheric reflection, is the highest effective (i.e. working) frequency that is predicted to be usable for a specified path and time for 90% of the days of the month. The FOT is normally just below the value of the maximum usable frequency (MUF). In the prediction of usable frequencies, the FOT is commonly taken as 15% below the monthly median value of the MUF for the specified time and path. The FOT is