开云体育

Brent, Please browse the forum Wiki and Files sections. You will find PDFs and links to various User Guides that detail the flashing process and other neat stuff about the nanovna. plese remember -

Thanks, John. I thought it might be something like that. And I've learned a second thing from your reply, how to update the firmware. Is there a specific site or download I need to be connected

RESISTANCE IN YOUR COAXIAL CABLE STUB Your antenna has R = 0 Ω. The R+jX (Ω) chart allows for positive and negative R values. 1) What is the significance of R = 0 Ω in your “antenna”; Is

Full set of plots for my current setup I am pretty sure they show the gypsy antenna is not that good now to find a way to improve it.

Here you go

Brent, My NanoVNA has a couple of circuit pads at that location (VDD and BOOT0). When shorted together at power-up, they cause the NanoVNA to enter DFU mode for firmware update. I suspect your unit

I'm a new user to the group. I did a search on the topic but was unable to discover what the small momentary push button switch in the center of the right edge of the nano VNA does. None of the online

The following files have been updated in the Files area of the [email protected] group. * //NanoVNA PC Software/NanoVNA-App.rar ( /g/nanovna-users/files//NanoVNA PC

Thanks for the responses. The nanoVNA I have now I managed to break the s11 connector off the circuit board but I did repair it successfully. Then I 3D printed an enclosure to help protect the

There's 20dB of attenuation between the external port and the mixer. More likely a overpower situation would blow up the resistors in the attenuator before it cooked the mixer. The series resistance

Bruce: You might have caused the AD602 devices to open, as they have almost zero protection, aside from a capacitive input. The level of R.F probably killed them. The devices are readily available,

correction? email is DOT NET? ?as? ?n8cdw@... not . c o m *Sent:* Tuesday, November 03, 2020 at 10:51 AM *From:* "Ed March" <shop101@...> *To:* [email protected] *Subject:*

The nanoVNA H4 is in stock at R&L Electronics as of today, 11/03/2020. I just ordered it along with the $7.95 test kit (circuit board with connectors, etc.) Ted, KX4OM

I'm posting this for my Friend Carl who has a nanoVNA-H4 for sale $52 Shipped Conus n8cdw@... 815-703-9472 Pictures on linke below http://a101.xyz/Carl/VNA-for-Sale-N8CDW.png Contact

Im just posting this for a friend Carl has a VNA for sale Contact Him for Details *Sent:* Tuesday, November 03, 2020 at 2:23 AM *From:* "Simen Tobiassen" <simen@...> *To:*

Is it cold enough? Remember, the performance of an antenna is inversely proportional to the temperature at the time it was erected. 73, Zack

Thanks all for the valuable input. I will check into the modeling programs.

Thank you, Jean-Roger, for taking the time for an extensive answer! I had to lay down flat on my bed with this one ;) This response got long. I tried to get it all in there, not necessarily

Thank you Christian, for answering! Complex Scattering (including the impedance from S11) refers to all the S-parameters being calculated from readings of scattered current and voltage waves, being

Thank you for answering, David. This is also what I know and related to, with both the Impedance and Admittance having a Real and an Imaginary part. But Jean-Roger have got to the core here; The