On 10/24/17 11:54 AM, Bob kb8tq wrote:
Hi
If you have the money, almost anything can be (and has been) done. It’s rare to
find a
real world application where this kind of thing is considered cost effective.
Fancy
radar systems are about the only thing that comes to mind. Radar of
this sort is always high cost / low volume.
Deep Space Network stations or other applications (VLBI) where the
measurement uncertainty is like ADEV = 1E-12 in 1000 seconds. There's a
whole analysis of the temperature effects on the fiber optic
distribution components, for instance - and they're buried 2 meters down.
At "billions of dollars in 1960/1970" I think DSN fits in Bob's high
cost/low volume bucket.
Bob
On Oct 24, 2017, at 2:10 PM, Hal Murray <[email protected]> wrote:
[email protected] said:
My applications were broadband. If I remember correctly, aggressive
bandwidth limiting can cause phase shift problems due to temperature
changes unless one is careful in the design of the filter.
Does anybody ovenize amplifiers and filters to avoid that problem?
--
These are my opinions. I hate spam.
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