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Hi Ed, Thanks for your good comments.? I wanted to try making my own transformer but I realized that it was not so easy ! I should try your suggestions on my transformers. Yes, I have a 4342A? Q

Stabilizing the excitation voltage via a feedback loop is quite a common feature of many RF signal generators. Look at Marconi 2022 for example. This uses hot carrier diode detector to monitor the

Hi Jacques and Mikek, As you can see, I have joined the group. Jacques, I enjoyed reading your report on this stuff. You really dug deep and figured out a lot. Nice work. One thing I wonder is that if

Even a blind squirrel can find a nut once in a while. :-) The complexity is over my ability, I sometimes see the big picture and even a block diagram, but can't design. Yes, but once designed, it's

Hi Mikek, I just did some simple simulations and yes it would certainly help to stabilize the 30 mV drive voltage. Then the Rs value doesn't matter, as you wrote. In the case of the HP4342A, at worst

Hi Jacques, I've been beating this dead horse for a while, but your figure on page 23 of the Rs curve over frequency of the drive transformer, makes my point. The drive level will change with

You might want to pose this question on this forum. There are quite a few antenna experts there. /g/antenna-research/topics Don Bitters On Sat, Jan 14, 2023 at 5:57 PM, Neil Smith

Hi folks, does anyone have experience of a Fabry-Perot Open Resonator for dielectric solid and fluid characterisation at microwave/mmwave? I want to build one (!) but not simply copy how it's been

http://techlib.com/electronics/GPSstandard.htm " Imagine that one day you wake up to learn that all the GPS satellites have been destroyed. What's happening? War? Super-massive solar flare? Whatever

Norbert, Do you have 274-X Gerber files for this project? Sam W3OHM

Hello all, some years ago I developed together with Georg (DL6GL) a very precise True RMS-Millivoltmeter. https://dl6gl.de/true-rms-millivoltmeter.html Under the above link you can find all relevant

Change of frequency with orientation is a? well known property of quartz resonators and is a function of how the crystal is suspended , there are six axis of interest x,y & z up or down.? It has

Jeff take a look at the ke5fx website Pete G4GJL wrote:

Tom, who runs leapsecond.com has climbed mountains with Cs clocks http://www.leapsecond.com/pages/atomic-tom/ That’s a great website. His atomic wristwatch is nice too

You might want to take a look at the original paper by Pound and Rebka (https://en.wikipedia.org/wiki/Pound%E2%80%93Rebka_experiment is a good start). You'll see what they needed in order to make a

Hi Robin, If by relativistic effect you were alluding to gravitational redshift, the answer is no, this wouldn't fit. You'd expect this observed magnitude of shift only with a multiple-thousands of

Jeff, if you imagine gravity as a force vector going through the crystal in the oscillator, you can imagine a *minute* deformation of the crystal as the vector is rotated through 90°. That

As the socio-/psycho-paths continuously out themselves such snips of insight are very much on the topic of the very survival of humanity. That said, lists such as this aren't the place but the

wrote: I don’t know if you can delete your own posts on the forum - I have disabled editing, but I am unsure if deleting is possible. But whilst some people choose not to receive emails from the

I don't know why you would delete it, I see some interesting links and tested information. I'll copy the whole thread for my chemist son that is doing mostly mechanical now. I've read it twice I don't