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Thanks Herb. That will help a lot with my understanding. *Clyde K. Spencer*

Hello Herb, thank you for answering this! :-) You're absolutely right. The impedance steps are only shown in one direction, though: Going up. I've yet to figure out quite *why*, but I am looking into

That's wrong assumption. The Injoinic IP53xx chips are working as step-up converters when powered from LiPo, so it's always 5V on mixers.

Hi Les I would like a case, let me know when you get some done, Thanks Dave Browne 2E0DMB

Sorry, had to run and the keyboard hit the floor. I have downloaded a basic design, and we can mod it as we like. But as I keep saying, the cost will be min. For all Ham radio Lic. Holders. 73 Les

Hi, All I have downloaded a basic design, this is

Expensive I think. Bob

I found the same case that Terry VK5TM did on eBay, item 174039026524. Looks like an interesting case for the -H. The listing also led to this: https://www.thingiverse.com/thing:3818979 73 -Jim NU0C

On Tue, Dec 17, 2019 at 04:42 PM, <bing-wang@...> wrote: Anybody know how to set negative value for reference position. For example, -20dB. seems the num. keypad does not have "-" symbol.

Thanks for the update. Could you use a more robust switch like that on the NanoVNA-F? Looking forward to getting a unit. Mike N2MS

Hi Bing Wang Reference position is the grid lines from lower Line = 0 to top line 0=8 Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] <[email protected]> P? vegne

On Sat, Dec 7, 2019 at 09:06 PM, Clyde Spencer wrote: In the TDR display there are two traces, One Red and one blue. I understand the red but not the blue. Would some please give me an explanation of

Anybody know how to set negative value for reference position. For example, -20dB. seems the num. keypad does not have "-" symbol.

Reminds me of the rising edge of a square wave pulse, That's how i measure TDR using fast edge pulse from Schmitt trigger inverter and oscilloscope. Alan W2AEW has good youtube video on it.

Clyde, I had the same question. Maybe the author of the software or someone else will reply. Roger

Any chance you can add the option of rotating the display graphics 180 deg? I can see the cables coming out of the bottom being a nuisance in some instances. And please get rid of that ridiculous

You are correct Alan, I was too hasty in my enthusiasm.? And when the result is pure resistance there is resonance.? At frequencies above self resonance an inductor acts as a capacitor. Which

I would also like to add my voice to the many that would want to purchase this with a larger screen. How does the larger screen you may or may note use compare with the 4.3" on the NanoVNA-F? The 4.3"

However, the result of distributive C for an inductor which is one appropriate model, shunt C, leads to an inductor value which INCREASES as we approach SRF. The arithmetic for this is; Xt=

Thanks Bob. I'll give it a go. Martin K0BXB [email protected]> wrote: