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pins may have the same definitions, but is the supporting circuitry the same. FWIW, pin 16 on the MAX is Vcc-rf, and Vvco on the ADF. Vvco is pin 17 on the MAX. It's also Vvco on the ADF (it's on two

LiteVNA series use MAX2871 generators (and allow work up to 6.3GHz, and to ~9-12GHz if use haromonics, but low perfomance)

NanoVNA-F uses an ADF4350 already. Good point about register maps being different, but the MAX and ADF are pin compatible last I checked

Changing PLL is a major redesign of both hardware and firmware (that is, it's not a pin for pin drop in). The MAX2870 only goes down to 23.5 MHz which is fairly important for a lot of users. For that

See LiteVNA64

Does anyone know of any currently-on-the-market NanoVNA hardware revisions with MAX2870/MAX2871 PLL's? Seems like they have better performance at higher frequencies than the ADF4350/4351, etc...

I think you meant 90 degrees apart... I'm not sure that the reduction in Mutual L wouldn't be countered by the increased trace length. Either way, we're talking nanohenries.

49.9Ω is a standard E96 1% resistor value. There is an advantage to using two 100Ω resistors in parallel, which is decreased inductance, especially if they are arranged 180° apart to minimize

Just a small suggestion to make things easier to follow. There are more than two dozen entries on this thread "Through calibration". Is there any way to print out all of the response as one word

You should not need a special driver for Windows 10 to use this nanovna with NanoVNA-Saver or NanoVNA-app software on your computer. Windows normally will automatically load a default driver that

Can someone point me to the proper windows 10 software and driver to this version, please ? And, do I have the latest firmware version ? Thanks NanoVNA-H HW 3.5_LS_MS Based on DISLord edy555 Version

I used some 50 ohm thin film 0805 SMD resistors in my parts pin. Thin film resistors are able to achieve much lower tolerances, have lower noise, lower parasitic inductance, and lower capacitance

Couple more questions on that jig: 1. Should the coax be as short as possible? 2. For the open plate, you must necessarily have a “backer board” to attach the two copper pieces to. It appears you

@Roger, when building the simple test jig you pictured above, what are the best type of resistors to use for the LOAD plate? I think some types are to be avoided, but can’t recall which.

It seems to me that this is the *only* solution, especially for a very asymmetrical antenna. Indeed, the 12.1 m coaxial cable is part of the radiating system. I even think that it should be connected,

First measure the loss of your cable using your nano vna at the frequency of operation. Now convert this to a resistance which you can add to your antenna as a source. For e.g. 50 + 0.1 ohm say. Then

Also, On YouTube you can find some really great info Odeon IMSAIGuy and Joe Smith. The later has developed an excellent Desktop GUI based on NI Runtime and it’s pretty shit hot. Though I think

Though in possibly the wrong group, run your calibration procedure with the length of coax that you wish to be left out of measurement attached to the VNA you are using. Ive found that using the cal

what I do is make the calibration at the end of the coax (open, Short, Load), and then save that cal set. I don't think Nanovna-saver can do a full deembedding. It can take out a length, but not the

One way is to calibrate the NanoVNA with the calibration loads connected at the far end of the coax cable, where your antenna is normally connected. That is, calibration loads connected INSTEAD of