You know how you instinctively hold your breath when trimming stuff? With these little crystals being such great thermometers it does make sense not to breathe at them...
@nascom1 Also, as I understand it at least, USB ranging (JPL developed i belive) was the primary mode of navigation. Inertial got all the glory but USB was how they actually got to lunar orbit. That ranging pseudo-random code arrangement they used was kind similar to how GPS does it.
@nascom1 I think itβs an occupational thing. If you do it for a living it looses a bit of itβs magic. At least it does for me. Even though, Iβm happy there are people out there that preserve this stuff. Iβd hate to see the knowledge get lost in time.
@nascom1 @dave_universetf We have a similar problem in ATC. In tech. ops. we have to understand RF theory and be able to splice coax, use a VNA and do hands on fault-finding. It's hard to find candidates that have that theoretical background, hands experience and that are willing to work ops.
@nascom1@damienmiller I read somwhere that you have two S-band TX on the 70 meter. One rated at 20 kW and the other at 400 kW. Is that still the case? If so, when is that used? Radar?