111km lightwave record.m4v





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Published on Apr 10, 2011

On Wednesday 6 April 2011, G8AGN/P and G0EWN/p extended their UK red lightwave record from 87km to 111km, the first time that anyone in the UK had managed to exchange modulated lightwave transmissions beyond 100km. On Sunday 3rd April, a few days before this contact, a group of radio amateurs, including G8CYW, M0DTS, G8KPD, G4KUX and G8POG in the North East of England had also extended the 87km by a couple of kilometres to almost 90km, through a 2 way contact between Race Head IO94VS and Danby Moor IO94NK near Whitby.

G8AGN and G0EWN had been planning this record breaking contact for some weeks and the ideal weather conditions on April 6th, ( excellent visibility and reasonably warm temperatures, for a change), made the pair decide to go for it. Peter, G3PHO, was asked to go to the Sheffield end of the path to (a) act as an independent witness and (b) to see if his own receiver (built over five years ago) could receive over 100km.

This short video was shot mainly under total darkness, with no anciilary lighting, so expect some long periods with audio but no obvious video:-)

Not to be outdone, the North East group went out a few days later to make the first G to GM lightwave QSO, albeit not at this kind of distance.

This healthy rivalry can only be regarded as good for the development of amateur lightwave experimentation in the UK.

G8AGN and G0EWN with be giving a lecture on their lightwave experiments at the UK Microwave Group Microwave Round Table convention to be held at BT Martlesham on Sunday 17th April 2011 (see www.microwavers,org) and later in July at the Finningley Microwave Roundtable near Doncaster (www.g0ghk.co.uk/).



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