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Published byBrice Cummings Modified over 9 years ago
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Getting On the Amateur Bands Below 10 GHz Marty Woll N6VI
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The Plan “Blade” concept for stacking & packaging Common interface and mounting Compact enough for vehicle rooftop Use commercially available building blocks
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The Components DB6NT transverters (144 MHz IF) DB6NT amplifiers (~10 dB power increase) DB6NT SEQ-2 sequencers Surplus SMA SPDT relays for T/R Surplus SMA SP4T to switch IF & Ref Osc Traco voltage converters for relays Surplus UT-141 jumpers (re-bent to suit)
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Kitchen table wasn’t big enough
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Assemblies before the point-to-point wiring
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2304 transverter was positioned to accommodate its integral heat sink SequencerVoltage converter
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3456 used surplus PA (under $60) Had to attenuate transverter output
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5760 was the easiest layout
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For 10 GHz, used a pipe cleaner to measure the required UT-141 loop
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Packaged up in a Halliburton camera case back to front: 2, 3, 5 & 10 GHz
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Side view showing control switching in back Cooling vents on side and bottom of case
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It’s not the prettiest wiring job in the world......... but it works (so far)! - Over 100 QSOs each weekend of 2012 10 GHz & Up - Survived numerous 10-grid-square contest roves (700 to 800 miles each) without complaining -Worked rovers quickly with one-switch band changes -- Stop-and-go operation; no on-site set-up
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Have a great meeting! Sorry I missed it; still packing for morning departure to Frazier for June VHF Contest Hope to work you from DM04ms this weekend! 73 de Marty N6VI
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