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What I wanted to say here is: A quarterwavelength at 500 kHz = 150m electrical. A 1/4 wave physical cable with VF=0.78 would then be 150 x 0.78 = 117m long or with a VF of 0,66:聽 150 x 0.66 = 99m So

I've measured windowline many times using the NANO - something I can not easily accomplish with the HP 8753C. Be sure the NANO is not connected to any conducting cabling, chargers, USB cables, or

I'm wondering if the correct way to measure the length of window line with a NanoVNA is fundamentally different than that of measuring coax. I'm following the method described by Arie

Hi , some time ,is it necessary to force the installation of the STM drivers as wrote on readme.txt , inside the directory of the en.stsw-stm32102. / (C) COPYRIGHT 2018 STMicroelectronics *

This solution solved my issue, which was exactly the same as OP. Thank you sir!! Tim NC0Q

David, The SD card routines have been tweaked to work with most TF cards in SPI mode. Unfortunately, not all cards support that mode of operation. Most newer cards do support SPI mode.

I could not find any of my SanDisk 16gb cards that would work. Switched to a Samsung 32gb and it worked perfectly.

Yes, I'd put the 20 dB pad on the UUT output (i.e. the CH1 port, not the CH0 port).聽 Then you do a calibration (with the pad in place).聽 Measure your UUT, add 20 dB to the S21 magnitude. You could

I think Jim was saying two things: 1) Calibrate it normally and then measure a known device, like e a 20dB attenuator, and see if you get a sane result. 2) If measuring a (say) 20dB amplifier, put

Hi , in my opinion , calibrate the S11 port , with 20 dB of attenuation applied , make non sense . Maurizio

If you check with a thru and/or a pad, do you get the right values (i.e. did you not damage anything). You can put 20 dB attenuation at the output of your amplifier under test. Calibrate (Short, open,

Trying to use log mag and not working now. I think I overload S21 with more then 10db. What is the fix anyone now? I鈥檓 hoping some simple right at the port

For information only: Ham-Con this year will be both in-person and online. It is scheduled on Feb, 26th, 2022. Before Feb 20th, entrance is $6, after it is $10. See all the information on

Did anyone read my initial reply to this thread? All this was there, but not using the TDR. Dave - W脴LEV -- *Dave - W�

This one is very easy to answer as a cable engineer having used both TDR and OTDR Test Equipment in the past. All you do is get an exact known length of cable, attach it to your TDR, dial in a vp

Hi Bob, What I wrote about the 150m is not a calculation of a cable length. I was showing that the electrical length is 200m for a physical length of 150m. :-) About the quality of the nanoVNA H3.2

Boy, the guys at CERN should have bought a Na

Hey Daniel: Yes, there is an accessible piece of software for the NanoVna built by a member of this list Bruce KC1FSZ. I am also a blind op and now use Bruce's software very effectively with my

Hello I have a white stick operator friend who has a talking kenwood radio, uk amplifier screen reader compatible linear. He would like to know if there is any suitable windows software. I tried NVDA

Great, thanks!