Progress

• December 15, 2012
• All bodies obtained
• All MMICs obtained
• All feed thrus obtained
• Decmeber 17, 2012
• Dowel pins ordered
• Single Layer Caps obtained
• All RF boards obtained
• January 13, 2013
• Bias board parts counted, parts ordered, parts acquired
• Bias boards assembled
• Tested 37 of 47 assembled bias boards
• Assembled 10 of 47 of the units
• Test and trouble-shot 4 of 10 of built units
• February 13, 2013
• All Bias boards assembled and tested
• Assembled 30 of 47 of the units
• Test and trouble-shot 25 of 30 of built units
• Happy with noise figure of aobut 1/2 of the units
• March 29th, 2013
• All 47 units assembled
• All units trouble-shot
• Measured noise figure of all units at 78,192
• Measured noise figure of sufficient units at 76.030 for EU oreder
• Shipped units to EU / UK hams
• Evaluated untis for 77, 77.2, 79 and 80 GHz
• April 17th, 2013
• All untis for 77, 77.2, 79 and 80 GHz selected
• Accurately measured units for those freuqencies
• Shipped All Remaining Units (except those who asked for delayed shipment)

I am pleased that all shipped units had noise figure, accurately measured, below 5.5 dB, and at lower frequencies some achieved 4.8 dB. At some future MUD Conference, I will give a wrap-up talk about the experiences of doing all this.

Thanks for your patience. Those who have received their parts are invited to contact me with any questions or advice or anything pertaining to using these parts.

Please return to this page for further information about saturation power, care in use, installation ideas, and other topics.

Tom WA1MBA

This page was last updated April 17, 2013