003 How to get Precise Timing and Frequency to our Lab from Crystals, TCXO, OCXO to GPSDO, BG7TBL

[@MrAsdf1980]

I'm so excited for following step of satellite comm project 🤩🤩

[@HB9BLA]

This is cool tech, indeed!

[@PaulGrayUK]

At school we are taught how to tell the time, as we get older, we appreciate how time tells us and learn to curtail as much jitter in our lives.

[@HB9BLA]

I agree!

[@lmamakos]

A nice observation about the 'pre-aged" OCXO modules. In a similar fashion, the voltage calibration standard that I bought from an eBay seller had a reference that looked as if it was harvested from some other device. So it was already though the initial aging before it got to me. I was less interested in the absolute voltage than the stability, so it worked out well. So nice to have discovered this other channel of yours!

[@HB9BLA]

I decided to create it to do "illegal" stuff, too. I decided to omit any projects where you need a license on my primary channel.

[@daveholden3935]

A clearly explained (as always) new video on your new channel. Thank you. I look forward to the next one. (Until I fixed the enclosure's screening the square-wave 1MHz output of my home-made VE2ZAZ GPSDO filled my shack with 1MHz harmonics to over 200MHz. Not exactly what I wanted !🙄)

[@HB9BLA]

That is the property of fast edges:-). Many GPSDOs use a sine output. Less problems in this respect. These videos are not new. Just cross-posted from my main channel as a start, BTW.

[@imagesbyscott]

Thank you. This is an awesome video. I'm looking foward to the 10GHz project. 73's, K2CK

[@HB9BLA]

This is a cross-posted video. You can watch the QO-100 videos on my main channel if you do not want to wait till I cross-post them.

[@zyghom]

are you sure your wife approved this video Andreas? ;-) man, that was too much ;-)

[@HB9BLA]

So far I had no complains ;-) (Maybe because she does not watch my videos)

[@wild-radio7373]

Very cool 🥰👍

[@wild-radio7373]

TINY HAND!♡ haha luv that!

[@HB9BLA]

Thank you 🤗

[@chuxxsss]

Caesium or Rubidium oven control clock standard, hope it is GPS governed mate. 10 M hz standard.

[@HB9BLA]

GPS is more accurate. And for sure cheaper and smaller ;-)

[@matambale]

Clever, just mount the PCB directly to the face of a metal box!

[@HB9BLA]

I agree!

[@pjn1988]

Please be aware that the ublox cannot precisely generate any arbitrary frequency - you will get missing pulses. It is using 24 MHz source and a frequency divider, which can generate integer divided frequencies only, e.g. 12, 8, 6,... MHz. This is a disadvantage when needing 10 MHz. vy 73

[@HB9BLA]

The GPSDO does not use the clock of the Ublox for the output. The ublox signal is only used to (longterm) change the frequency of the OCXO

[@caspernag686]

Time is not actually a universal standard. One year in space would make you 3ms younger. The only universal standard is the speed of light (in vacuum).

[@HB9BLA]

For my purposes the statement is "good enough". But I am sure you are right.