G4BAO.COM Microwave Amateur Radio Station, Waterbeach. 8km North Of Cambridge JO02cg
To Contact me: Skype johng4bao ON4KST Microwave Chat E-mail john at g4bao dot com QTHR Home About me  My Equipment  Projects 3400 MHz PA p1 3400 MHz PA p2 3400 MHz PA p3 3400 MHz PA p4 3400 MHz TXvr p1 3400 MHz TXvr p2   3400 MHz TXvr p3 3400 MHz TXvr p4 GB3CAM Andrew 23cm PA  modules     Related links Downloads	GB3CAM 24GHz beacon Allocated Frequency - 24048.870MHz Current Frequency  Output power - 250mW Location - West Cambridgeshire,   IO92wi,   33m ASL Antenna - Horizontally polarised slotted waveguide at 31m AGL clover leaf pattern QTF approx 10dBi to SE/NW, 6 dBi SW/NW.      Introduction The idea for adding a 24GHz beacon to GB3CAM came out of some musings on the success of the 10GHz beacon. Mainly while cycling to work, in August 2007 and in a subsequent series of emails betwen myself, Bernie G4HJW and Sam G4DDK.  The idea came together very quickly as I already had a 12GHz multiplier, and Chris GW4DGU was keen to try out his design for a new ultra- stable  oscillator known as the "DISTAW". (pron. dish-tau) . Apparently distaw is a Welsh adjective meaning quiet or silent. So from concept to on air took just 13 months. It would have been 10 months if I'd not blown up two PAs in the process, but that's another story!   GB3CAM Supporters Bernie, G4HJW - GB3CAM concept. Design, build and test of 3cm beacon. John,  G4BAO  -  24GHz beacon design build and test. Chris, GW4DGU - 24GHz beacon reference oscillator. Dave WW2R/G4FRE  - keyer   Paul, G4AJE - Beacon site Ian G4AKD - Trial site for 3cm beacon Ian, G8KQW, Brian G4NNS - 24GHz antenna build and test Tom, G4TWJ - first 24GHz PA Sam, G4DDK - second 24GHz PA and moral support when things began to fail! Phil, G8MLA - third, and hopefully final 24GHz PA Murray, G6JYB - Ofcom Liaison. Alan G3NYP Connectors   The UK Microwave Group for financial support. The shutdown operators. G4HJW, G4BAO, G4BEL, M0BXT