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She is on "leave" if I remember correctly

/g/nanovna-beta-test/topic/76204167 - but you need access permission. -- Terry VK5TM https://www.vk5tm.com

Seems the half wavelenth of coax thing would be accurate only on a very narrow range of frequencies (and harmonics). Calibrating a VNA through the coax can cover as much spectrum as you wish. Jerry,

You can match/measure the feed point of your antenna by using an _electrical_ half wavelength or multiples thereof, between the tuner/analyzer and the antenna. Larry, K4MLA

Even if the standards are 180 degrees apart in phase, the calibration routines need to know the exact phases at each frequency. +100 degrees and -80 are significantly different from +110 degrees and

I have been gone for a few weeks. Where did the downloads for OneOfEleven go? I went to he old GitHub link and it is broken. Gary

On 8/18/20 5:02 PM, Jim Lux wrote: > On 8/18/20 4:10 PM, AA7US wrote: >> I’ve searched for hours and so far come up empty handed... >> >> Does anyone have a suggestion for a soft, clamshell style,

In addition to the suggestions in my last email... There are a wide variety of soft sided cases made for portable games (your Nintendo Switch, for instance) with pockets for adapters, games, etc.

Check out Pelican cases, they have some fairly small ones. Another source is Cabela's (or Walmart, perhaps) - a small gun case might work. Both of those will typically have foam inserts that you cut

Not soft, and you'd need to provide your own padding. But if interested in that retro look, search for "empty cigar box" on ebay. If not considered appropriate for a nanoVNA, could use it for your

While they don't have a zippered area, they do have plenty of room for all the goodies and can be customized with a pre-cut foam section that lets you take out pieces to fit items. Check these out at

I’ve searched for hours and so far come up empty handed... Does anyone have a suggestion for a soft, clamshell style, padded storage case that'll fit a NanoVNA-H4 with enough extra room for typical

I couldn't figure out who from the morass of comments, but somebody wrote "It’s not that important that the phase of the open and short are exactly 180 degrees apart". This is true only if the

And is probably a non trivial modification - you'd need a UI for entering and editing the param

50 years ago: PCAP with punch card decks....;-)

Dave, Thanks. This had been strictly an academic exercise. It is now something to file under "Why short HF whips are so inefficient" I need to start playing with one of the antenna simulation programs

The internal software doe not have not have that cal standard set in it. The side effect is the user then has to "do the math" and adjust as needed. Tedious but still better than not having anything.

[email protected]> wrote: Not if you want to take the unit mobile and use it without a computer, which for me at least is the big attraction of a NanoVNA. Jerry, KE7ER > If I want a laboratory, I

OK, I think I understand now. When calibrating a VNA to the standards, an adjustment is made by the software as to exactly where the reference plane is. The calibration could have been structured such

To do a proper cal on most modern VNA or PNA first the kit used it identified to the machine. The -032kit (SMA) from HP is know the the Agilent E8357 PNA by the kit number and will correct for any