Presentation on theme: "GM4CXM and GM3WOJ Personal 10 GHz Beacons"— Presentation transcript:
1GM4CXM and GM3WOJ Personal 10 GHz Beacons Alan Dimmick GM0USI andBrian W Flynn GM8BJF
2Personal Microwave Beacons Beacons are a good way of generating interest in microwaves – signals there most of the time!Also keep the bands occupied!Bit of a nuisance at your home QTH if active yourself!
14Origins of the Beacon Project Dawned on me that some of the Cairngorm peaks are LoS from both Edinburgh and Lowlands and East Coast of Ross and CromartyPlanned a QSO using “Grampian scatter” from Chris Tran’s QTHChris offered to Host a beacon if I provided it.
27Beacon Specification Callsign GM3WOJ Location IO77WS62 Mode(s) JT4G + FSKFrequency MHzReference OCXO (Usually within 500Hz of nominal carrier frequency)Power 700 mWAntenna 35 cm off-set parabola (Ex BSB dish)Beamwidth 7 degreesBeam heading ~165 degreesJT4G timing GPS
28Acknowledgements Chris Towns G8BKE – Donation of PA Susan Kivlin – Soldering of LMX2541 to PCBDavid Anderson GM6BIG – Donation of OCXOChris Tran GM3WOJ – The location.Andy Talbot G4JNT - for doing the hard work sorting out the JT4G coding.