开云体育

Always perform a reset before setup and SOL. I have a piece of that DX400max 50ft long I do not see that oddity. That cable would have to be really poor to get that result. Several possible things,

As the TCXO frequency is out of tolerances, it's certainly a defect component. As i wrote, i ordered the Nanovna-H at "Wish". I've read, but too late, that this was not the best solution... The

DR Kirkby, That would be a corner case and a very very long cable. Typical cables used ran maybe as long as 100M, so we haven't reached a radar mile yet. Usually we have no reason to make sudden

Try update firmware to my last version and check /g/nanovna-users/files/Dislord%27s%20Nanovna%20-H%20Firmware As i remember old Hugen (and edy555 < 0.6) firmware not fully correct

The NanoVNA-H we produced should not have such a large deviation. Can we provide PCB pictures and test pictures? If it is the version we made, we can provide a new one for free.

With a loop, i was able to measure the TCXO frequency and found 25.997748 MHz instead of 26MHz ! This error correspond to ~ -86ppm, not too far of the output error of -85.5 ppm at 100MHz CW ! As i'm

Thanks for sharing will look into it !

Please read the forum WIKI and notes in the forum FILES sections. You need to install the latest version of firmware for the model of Nano you purchased.

I just got my Nanovna-Hv3.4 from amazon seesii. I was ready to return it because the back states frequency:50k-300MHz. I am looking for the 10KHz starting frequency. Now I see your expert review.

Just by curiosity, i entered a CW value of 100.0086 Mhz and i measured 100.00002 MHz. It should be a solution with Si5351 programmation but, after reading a lot of related information, i don't find a

REF: /g/nanovna-users/message/13681 Hello, again. Well, after the Special Interest shown here, we would like to inform you that, in direct contrast with what Gary O'Neil, N3GO

I'm a little bit disappointed; i measured a CW 100MHz output from my NanoVNA-H received one week ago. The reference of my frequency meter is a 5MHz G3RUH GPSDO and i get a 99.99144 MHz (~ -85.5 ppm

Thank you for your quick reply and data-sheet's link. Rudi

try to see https://github.com/mihtjel/nanovna-saver/issues/125 and

The 50 ohms cables as far as I remember were rated by different manufacturers as 50 to 52 ohms years ago, so my guess is that 51 ohms is on the ballpark. It is also a standard resistor value. Try to

After calibrating, I connected my nanovna to my VHF antenna via a brand new 75 foot length of 50ohm DX400MAX coax. The SWR measurement oscillates up and down every 4MHz or so (see attached). These

Hi, Is it posible for add the big CH0 screen info in version 0.7.1-20200321 by edy555 ? Tnx Andy - ON7BA

https://lcsc.com/product-detail/SMD-Oscillators-XO_TXC-Corp-7L26002009_C96479.html

Bob- thanks will give that a try. Dan KC2STA -- Dan Ziolkowski KC2STA SKCC #4290T Ubuntu LINUX

Hello, Can somebody give me the 26MHz oscillator reference for my NanoVNA-H ? Many TNX in advance. 73 QRO, Rudi, HB9ARI