Getting On the Amateur Bands Below 10 GHz Marty Woll N6VI
The Plan “Blade” concept for stacking & packaging Common interface and mounting Compact enough for vehicle rooftop Use commercially available building blocks
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)
Kitchen table wasn’t big enough
Assemblies before the point-to-point wiring
2304 transverter was positioned to accommodate its integral heat sink SequencerVoltage converter
3456 used surplus PA (under $60) Had to attenuate transverter output
5760 was the easiest layout
For 10 GHz, used a pipe cleaner to measure the required UT-141 loop
Packaged up in a Halliburton camera case back to front: 2, 3, 5 & 10 GHz
Side view showing control switching in back Cooling vents on side and bottom of case
It’s not the prettiest wiring job in the world but it works (so far)! - Over 100 QSOs each weekend of 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
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