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What the VNA will not do is tell if a given crystal will oscillate, cleanly and on frequency, in a particular circuit, which is what the OP wants. 73, Don N2VGU

Hi Tom; You might try reflashing the firmware and also the bootloader. Both may have been corrupted when the battery died, and it sounds like the bootloader MB ay still be. -- 73 Gary, N3GO

The basic go no go test as described is fine. However if you want to accurately determine the crystal parameters you will need more work. For HF crystals a good test jig to avoid strays is useful.

Rob, Thanks for the info. I've got a few crystals laying around and I'm basically just looking for a go/no-go on the crystal as it appears dead in circuit. I'll watch the video in the morning, too

Justin, Either should work for just seeing if the crystal has a resonance near the expected frequency. I've just used channel 0 for S11 measurements, with the coax shield to one side of the crystal

Thanks, Rob. Do I need to use both channels or just the "primary?" 73, Justin B. KI5GKD

I use mine often to check crystals when I suspect they may be bad. I have some SMA to alligator clip cables which make it easy. You can over the expected frequency range, and you should see a S11

I'm working on my Heathkit HR-1680 receiver and I have a crystal that I suspect is bad. Can a NANO VNA be used to test a crystal? If so, how? Thanks and 73, Justin B. KI5GKD

Hello, I have a NanoVNA-H4, since 1 year, that worked fine until yesterday: I left it running overnight and this morning I found it with the screen frozen and unresponsive. Cycling power it now shows

You can measure them as you would any other lumped component. Typically you’ll wind up with a Z like 2 + 300k j, which is hard to measure. As to whether the measured Z is meaningful is a whole other

Interesting! "Motorola connector"? I had no idea! Thanks, larry

ground sleeve is sometimes solid and sometimes slashed, with the ground sleeve sectors "bulged" for solid contact, as seen here. The number of slashes varies. diameter. It's a solid conductor; very

Interesting. But I have tried to solder between SMA connectors legs some time ago and it is hard. Soldering several resistors there is probably inpossible(for me). Putting a lot of solder everywhere

How is that done? I can only run basic SOLT calibration. I have several of F to M adapters, but now I would like to work and calibrate without adapters. ( At the moment it really doesn't matter, my

Yes, I forgot that. I am using SMA with V2 Plus4. That is up to 4GHz.

Wasn't the connector used with auto radios called a Motorola connector? The connector has a larger diameter and the center pin is longer than the RCA "phono" connector? Mike N2MS

Official calibration kits from Hugen have been characterised (huge thanks to Kurt Poulsen) with and without the barrel adapter. Use the adapter to turn the male kit into female. Alternatively buy some

You can easily build your own SMA female kit which works quite well. Use PCB board SMA connectors with legs cutoff. Cut the centre pin flush for the open. For the short use copper disc or foil and

You did not mention the specific connector you are using.. Oh and one more thing, what frequency range are you working with?

I use VNA often with a short coaxial. I noticed that a male calibration kit requires an adapter when it is used with a cable. Because cables have a male connector, too. Ebay has only male calibration