开云体育

qrp.ddc, Thanks for taking the time to reply. Ham's such as myself are generally looking to purchase specific types of 50 ohm cable such as RG-58, RG-223, RG-6 etc. The cables are all marked by the

Where can I find the later, bug free firmware? Paul

Probably this is the reason why NanoVNA shipped within plastic box. When I buy Li-Ion batteries on aliexpress, they are also shipped in plastic box. It seems that shipping Li-Ion battery requires

Respectfully Dr’s Yin and Pez; Perhaps much of the frustration you must share with Dr. Kirby and myself, and perhaps a few others who might be following for want of discovery of what these exchanges

Hmm. I think polyethylene dielectric coax has a pretty reliable velocity factor of 0. 66. So identify the dielectric before applying the vna to measure its length? A

Thanks!?? Mike WY6K "... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

Mike, The do indeed increase the dynamic range somewhat. The dynamic range at 600 MHz and above is rated at 40 dB and all of the units I tested , even the worst ones, met this spec. I have no uses for

Unfortunately I don't have access to better equipment. The only VNA that I have is NanoVNA and EU1KY single port VNA. Such cipher 25 "meters" or 24.5 "meters" is completely useless, because you're

Hi Thanks! I think I will change the firmware since "sounds" numbers are more important to me than the last 100 MHz. Bo

Hi The way I see the "marker points" is semi-automatic. The user will have to press e.g. the LPF button, if the DUT is a LPF. The S/W then looks from low to high frequency for the selected "marker

So it is already thin.? No help there... Mike WY6K "... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

How thick is your FR4? Thinner board will keep the RF more concentrated in the dielectric below the traces. Dave. -- Dr. David Kirkby, Kirkby Microwave Ltd, drkirkby@...

Oristo, thank you! Exactly what I need! Now, to find time to implement all the things I want to do .. oh, and fix all the bugs... ;-) -- Rune / 5Q5R

0,8 mm.

Hi Maurizio, good to hear that the antivirus cleared it - phew! I don't know if I can do anything to make that go easier, other than put fewer viruses in? ;-) I guess fewer than none is difficult. I

Does this help? "Here is the simplest way to save a widget as an image. This approach works on Qt 5:" ui->myWidget->grab().save("image.png");

Hi Bryan, great to hear that the software just runs, and I'm also happy that the calibration assistant worked out. It was really a last-minute addition, so I'm happy it works! ;-) The plot scaling for

FWIW, calibrating 50kHz to 100MHz with these 34cm SMA-to-BNC pigtails: https://www.ebay.com/itm/254218176301 .. and a generic BNC terminator and female coupler yields lower CH0 LOGMAG when

Hi Bo, now I've gotten to your long list of ideas! Thanks for providing them! Screenshot/image saving is definitely interesting! Currently, the graphs/plots are all painted directly on a Qt widget, so

Thanks Warren.? Mine has those shields.? I have heard that the shields increase the dynamic range above 300 MHz and especially above 600 MHz.? Is that not true? Mike WY6K