Is an isolator overkill when measuring a Gunn diode oscillators output power?
Not even the frequency, just power.
#ghz
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Quick antenna switch kludge.
No power yet, as the TX side of that radio is nowhere near working yet.
Also need to buy more large tips for the radio clubs big, good iron.
The weller used here was just not enough.
Why are there no #8bit #CPU with #GHz #clock-rates?
Here's some answers
https://forum.arduino.cc/t/why-are-there-no-8-bit-cpus-with-ghz-clock-rates/115783
> Most 8-bit AVR chips have a maximum clock of 20MHz. For many applications that's enough, but it made me wonder: why do even modern 8-bit CPUs lag so far behind 32-bit CPUs in terms of clock rate?
Arduino Forum · Why are there no 8-bit CPUs with GHz clock-rates?Most 8-bit AVR chips have a maximum clock of 20MHz. For many applications that's enough, but it made me wonder: why do even modern 8-bit CPUs lag so far behind 32-bit CPUs in terms of clock rate? I can see why 8-bit CPUs lack sophisticated features to deal with several program instructions simultaneously, but is the difference entirely down to pipelining? Or can 32-bit chips carry out a complete instruction cycle in less time than an 8-bit chip? And if so, how? Please excuse the slightly OT po...
Clock output from RP2040.
IIRC span was 1MHz - 1500MHz
Output was from RP2040 GPIO (I think it was GPIO21, as that's GPOUT0 and that can output more direct from the clock peripheral) thru a 10pF series cap to the spectrum analyzer input.
Setup for setting setting up the power meters and the drive amplifier output power.
#hamradio #GHz #ghz_bands #2.4GHz #13cm
Manual waveguide frequency meter.
Just rotate the micrometer until you see a peak on the detector diode being fed to the BNC.
Then read the frequency from the scale.
Whee, new lab additions.
Might finally dare to power up those X-band amps and see where they operate.
And possibly even the ancient surplus 6GHz TWTA.
:D 6.1eur BK4802 based radio from aliexpress has detectable harmonics up to ~12.5GHz.
Spot the missing thing.
A centimeterwave kludge to cap off the radioclub evening.
And I did verify that it worked on the centimeter bands.
What uses would there be for 7638MHz and 7554MHz DRO oscillators?
Not phase locked, so not super stable, don't multiply immediately to any interesting bands either, so not that usable as a marker either.
And these have a negative supply voltage.
Made a quick combination of DC-block, volume control and BNC to 3.5mm adapter for testing a rather vintage Wiltron made 4GHz detector.
#GHz #ghz_bands #Wiltron #Crystal
Everybody has a #GHz bucket.
Right?
Here's an #introduction of @frederikhahn as part of my agenda that #nice should be a characteristic demanded of academics.
In the past few years Freddy has been gently cracking his head on how to remove bottlenecks in a #quantumNetwork. He focused on relevant #quantum states and tweaked their parts like he tweaks parts in his bike to make it run seamlessly
https://arxiv.org/abs/1805.04559
(Local complementations interest me for #quantumCompiling: the unitary encoding the repetition code can be turned into a gate between any two qubits because one can distill Bell pairs out of #GHZ states.)
Rick came from Berlin to the #quantumInformation #workshop in #benasque by train. His tap water canister was half empty: he realized that meh whatev he can travel half Europe and not eat if the food is not what he wants provided he has water to last him even more than 24 hs.
Frederik is a scientist who leads by example, is sustainably concerned about the #climateCrisis but look at him shining. His #intermittentFasting skills allowed him to be chilled after a strainous long distance travel but I learn from him that being nice and chilled is a muscle we can all train.
His integrity at work reminds me that it's not impossible to keep our humanity first and also excell at research. I wish we had an equivalent of #citationMetrics for acts of kindness in academia.
These photos were taken on a Friday, on Monday that week he defended his thesis. In style, which is his style. For his #phd hat I'd add a phone charger, his daily cycling suffices to top up the battery. I don't know how to symbolize my thanks for having made my local science world wholesome, one #introvert thought at a time, but: thank you for caring, Dr Hahn!
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