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Same here. I've been very happy with it. Zack W9SZ

Back in the 70's I worked for GE testing yokes on TV's. The yokes had a couple of layers of #22 enameled wire etc... I say all this to open some ideas or complaints regarding using these yokes to do

Well, some of them kind of do.? ? ?Part of Dynamic Braking! Kent

Randl.com is where I got my H4.

EV's don't have "alternators". :0)

As someone who just got nanoVNA 4 from amazon I recommend following this guide from nanovna.com to ensure you get a legit one that is firmware upgradable. https://nanovna.com/?page_id=121

I THINK you can buy the nano VNA 4 on Amazon.

Hi Paul There are no devices shown in gray. nanoVNA-QT can't see the device. Instructions in https://nanorfe.com/nanovna-software.html say it needs a driver. I installed CypressDriverInstaller_1.exe

Hi Steve yes, I have 4 cables, all check good using other devices Thanks

Hi Brian, Have you tried a different USB cable?? I use the same cable that I use with my Android cell phone and it works perfectly.? I use Win 10 and I never had to install different drivers...

I don't think you need to add any drivers on Win 10... (Pretty sure, I didn't, anyway. But it's been quite a while.) You might try going into Device Manager, select View / Show Hidden Devices, and

I posted this query on Jul 17 #33483 There were no helpful replies. I have tried installing every USB driver I can find for the nanoVNA but none of them makes the nanoVNA appear in the list of USB

For large, high-Q coils, some crystal set builders use a styrofoam cake dummy like this: https://www.webstaurantstore.com/6-x-4-foam-round-cake-dummy/246CDRD46.html Styrofoam is as close to air as

We use blocks covered with static dissipative film (Amstat, etc.) The surface resistance is sufficiently high that it doesn't load the RF system, but it also prevents the charge that inevitably

Large styrofoam blocks are the "standard" in professional communities. At home, with all the RF test equipment, I use either corrugated boxes or an empty 50-gallon rubbish can. I could buy large

Corrugation should lower the dielectric constant and loss of any material roughly in proportion to its air content. So corrugated cardboard should have better specs than the uncorrugated cardboard

One can easily MEASURE the εr of the corrugated box material. Build a parallel plate capacitor using aluminum foil, single or double-sided FR-4 PCB, or some other creative set of flat conductors.

Possibly the εr rating of the corrugated paper, itself, is well above unity, which I seriously doubt. But a large box is pretty much all air with an εr miniscually larger than unity. Dave - W?LEV

I used to use cardboard to support things until I found these 1 MHz specs for cardboard with a density 0.5 ounces per cubic inch: dielectric constant 6, loss tangent 0.04. By contrast, styrofoam type

When I worked on GPS initial design we had a rigorous spec for the noise temperature of several of the receivers. This was in the late 1970's. We could not make the spec with anything from the US at