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I seem to have gotten everything working. The plots show a 280 kHz Murata ceramic filter with an 82 pF load on its output. The dB and group delay curves are similar to those published by Murata for a

When you use a coaxial cable the RF current goes up and down the center conductor and the inner surface of the coax shield. The reason I say inner shield is that due to the "skin effect" the RF

ST-LINK info: /g/nanovna-users/topic/nanovna_bricked/34149616 wrote:

Geoff, this will download the program and documentation: https://tinyurl.com/bd8fde5t Brian

Brian, When I go to this link: http://ham-radio.com/k6sti/mu.htm I get the message that ham-radio.com domain has expired. Is the above link you posted correct. 73, Geoff - W8GNM

When you use a coaxial cable the RF current goes up and down the center conductor and the inner surface of the coax shield. The reason I say inner shield is that due to the "skin effect" the RF

Below is an update on the schedule of speakers and presentations for the Southeastern VHF Society Conference. The conference will be held at the Quality Inn at Exit #4 in Clarksville, TN April 4-5,

Maybe you have a problem with the battery. I would open the NanoVNA and disconnect the battery. Check if it is working. Use a meter to check if there is voltage coming out of it and what it is. Also

You wrote in the title that the unit is: NanoVNA-H v3.5 ? If you have somehow managed to wipe the bootloader (highly unlikely) your only choice left is to connect to the micro directly, using a

How to remove the stored numbers in the recall/empty windows

Thanks. Clyde - but my unit is not -H; I did try the BOOTP - VDD reset, no good, and all the other sequences mentioned. Nothing lets me connect to the unit via USB-C. I do appreciate the response.

R&L was where I got my SAA2N. I also contacted them about the clone issue and I didn't get a reply back, that was 2 yrs ago. ________________________________ Sent: Saturday, March 15, 2025 5:33 AM To:

I got an email response from NanoRFE support with some concerning information. They suggested that the hardware version of my SAA2N "is a clone" and many users have reported issues with it. I was

@Dave : Thanks, 1.86:1 was before I put the PCB into its final plastic case. Then within the case it jumped to 2.6. That's when I calculated the corresponding matching values. I've put an 8.2nHload

I finally managed to implement renormalization for unequal port reference impedances. The images show unequal resistances for a 10.7 MHz Murata ceramic filter. I optimized them by hand for minimum

Further addressing small values of inductance: There is really no need to buy SM inductors which may or may not be apropriate. Small nH inductors can easily be made of short lengths of appropriate

Nico, So you have two issues here... Th first one is that you will have difficulty knowing what the impedance is near the matching network because your measuring system is affecting the results.

Nico, In your case the purchased helical is one half of the antenna. The other half is the "buried" side of the transmission line and the ground plane of your board. When making measurements of the

SUGGESTION: Forget about these "canned" solutions. Download and install SIMSMITH. https://www.ae6ty.com/smith_charts/ There is also a accompanying tutorial at:

It looks like the cal may not be taking. RESET......COMPLETE CAL.......STORE in a register. Go back and verify that the OSL displays as it should. If not, OPEN CASE....INSTALL PROPER LOAD......from