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Folks, Please use the SEARCH feature of the forum.? There is a thread called: voltage sensing diode Look for it?/g/nanovna-users/message/5526 It's D2 beside the battery connector On

frequency, it may not be much of a change, maybe a few MHz. I'm sure you mean a few KHz. Should be clear from context, but just in case somebody is confused...

Hi Steve; Gee... I can attach pix with any of my 3 iPads, 2 iPhones, and my iPod. My gripe is that I can’t use them for much more than lethargic web browsing once Apple obsoletes their support. :-(

You said that you are attached to the "facade of my balcony". Your antenna will be affected by the building structure and the fact that you are close to the ground. Both of these will affect the

Not a stupid question.. Lower than expected isn't unusual - all manner of things around the antenna "loading it down" will tend to reduce the resonant frequency. What I do is fold or crumple the

Thanks Steve! Bob

Are you using bare copper wire or wire with an insulating cover copper wire like house wiring? Generally when I build an antenna, I start with the following formula taken from the ARRL Handbook:

You don't change the SWR by changing the length of the cable.? It's the dipole itself that needs adjustment. Your goal is to adjust the dipole length for minimum reactance at the operating

First you must include the velocity factor of the wire - typically .95.? That brings the length down to 4.75.? Also, as the wire gets closer to the ground, the ground capacity makes the wire look

Hey, I've got a halfwavelengh dipole hanging on the facade of my balcony, it's two 5 meters wires connected through a 1:1 balun to work in the 20m band. I tried to optimise the length by cutting wire

Hey, I've just received my nanovna this week, and started to optimise the length of my half wavelength dipole wire, it's just two 5 meters wires connected with a 1:1 balun and attached to the facade

Here is the latest 'official' firmware update for the H4, it comes from Hugen's own repository. https://github.com/hugen79/NanoVNA-H/releases

wrote: 3 GHz full 2-port would be great if it had 4 receivers, which would allow unknown thru calibration. That’s a massive advantage. But without a display I would personally not buy. Dave. -- Dr.

Hi Bob, There is a document in the hardware mods section of the forum's files that tells how it was done..?

Steve, can you point me toward that display, and any instructions to retrofit? Thank you. Bob K6DDX

Ok, I just read the Whole msg: you've reflowed around the ribbon cable. Did you do a continuity check from the digitizer input pins on the uP to the solder pads? It's not a software issue. Either the

I had an interesting experience with a touchscreen. It was actually a working nano v2 for which I bought a 3.2” screen with the same interface via Ebay. On plugging it in, all worked except the

Dear Gary, Agree wholeheartedly. My stable of nano devices consists of an original v2, a v2 with 3.2” screen (much easier to use) and a v2 with 4” screen and n connectors about to arrive.....and a

Regarding this post from Gary from yesterday, a few quick explanations that may be obvious to some. Also a bit of what should be considered wild speculation on my part. Some nanovna firmware uses the

1: Try made calibration first Use leveler select Config->Touch cal Touch top+left screen side Touch bottom+right screen side After check work, use Config->Touch Test If all good - Save config