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Speaking as someone with some skin in the game, Youtube is a platform for selling advertising. Any side-benefit of it being slightly useful as an educational resource is entirely coincidental to its

In my experience there is a great deal more noise than coherent signals on 'YouTube" when it comes to anything of a technical nature, especially when it comes to R.F. design for some reason... on the

I tend to agree with David on S/N ratio of this yutube stuff. There's plenty of smart clever people putting stuff up, but the yutubes seem to be way too long - probably to keep viewers on-site to

wrote: I think the signal to noise ratio on YouTube is exceedingly low. YouTube seems a magnet for people to explain what they don’t understand, then be worshipped as experts by many others. ? I

I'm a bit of an instrumentation nerd these days. I rarely need to do RF measurements at near-DC frequencies (that is < 2 GHz) but I can't afford a VNA that will cover my ranges of interest.? I have a

I quite agree it's "an analog DSO". The short memory makes the FFT update *much* faster than my 20+ Mpt DSOs. But a 465 is mentally what I'm comparing it to. One that can do a good FFT and overlay

Can't say where other's went to EE school; but.. IMO... and in my university... it might have been different. I'd say that tech talk on YouTube is mostly edutainment (nothing wrong with that for

Besides being 'light' on memory (Which... IMO... seems odd... but is probably for 'reasons?') [ Don't ask me what 'reasons' means; but, apparently some people think it explains 'stuff' ...not sure.])

The trimming is only worthwhile if you are doing a first principles calibration using a sensitive null detector and water bath power measurement to calibrate the binary ladder. Otherwise buy stable

Here the DOS1104 compares the F***Elec FY6900 and a Keysight 33622A generating 10 MHz square waves. The faster risetime is the Keysight. Both 128 trace averages. I should note that a flaw in the

I neglected to mention I priced the list out on Aliexpress last night at about $600. I think that is fantastic as it's a sum a student can afford. And actually move easily at the end of the school

People seem to be skipping over the " absolute cheapest acceptable quality RF suite" part. I have a nanoVNA H4. It's nicer, but more money. This is as cheap as I know of with quality verified against

Reg, I would upgrade to: NanoVNA-H2 tinySA-Ultra If operating portable outdoors I would upgrade to SAA-2N. It has a brighter screen and push buttons which are far less cumbersome than the thumbwheel

Hi Reg, Certainly the TinySA Ultra. Well worth the difference over the standard one. Also I would look seriously at the Rigol DHO802/804 much better build quality than anything Owon has to offer.

Before I realized I was old and could afford the good stuff, I was very focused on low cost T&M kit. Here's my current absolute cheapest acceptable quality RF suite: Hanmatek DOS1104 F***Elec

[email protected]> wrote: Clearly trimming values adds to the time & cost, and personally I feel it would be better to spend the money on better quality capacitors. From my own perspective, I could

Erik, No sense calibrating a $100 Chinese counter with a GPSDO. The OXCO will do for that. A lot depends upon how this is done, mailing or meeting. Calibrating a 5386A needs a GSPDO People with lots

Because that gets you a range of precision values all of which are precisely related. A log detector chip makes a great null sensor for a capacitance bridge. Cal one of the set and they are all done.

Reg, Maybe it is good to be explicit on accuracy ambition level for the RF cal club. As examples: For some people a frequency reference using an OCXO which have been tuned to 10MHz and is shipped cold

drkirkby@...> wrote: Agreed. However for anyone that doesn't yet have a GPSDO, i have a number of the RFTG-u ref 0 units (the one with no receiver) in the UK and therefore with