开云体育

The first 2 pics look OK, but then you did something wrong to your VNA. Usually 80 m wire antennas are very narrow and cannot cover the complete 80m band. To make it broadband use multiple wire

Ive had this issue a few times on win 7 sp1,seems the windows updates screws the drivers up,normaly reinstall the st whatever it is driver and then it works,not sure on win 10 tho as i hate it with a

hi all i have a 80m dipole set for 3.775 Mhz,it seems to work rubbish,ive just done some adjustments,,take a look at the pics of it on the vna,does it look ok,views welcome,cheers m3vuv.ps,forgot to

The trace capacitance is ~ 6.5 pF before and after the modifications. The inductance is 0.046 uH. Insignificant? The PCB is small, 17mm x 25mm, not much trace area/length. Allison, The only examples I

A bad cable is among the first things to suspect.

From: Pierre Martel Hi David, Do you have some information about the maximum dynamic range the pluto can do in sa/tg mode? ==================================== Pierre, I've not seen any specifications

From: Leif M Are any these able to show close sidebands. Like what happens with 1kHz or 100Hz SSB modulation ================================ The minimum receiver bandwidth range is currently 2 MHz,

I have discovered that this happens and everyone tells you the problem has been solved. But when you try all the fixes, it still does not work! It seems that the WIN10 virtual comport gets confused by

Thanks, Dragan - clearly seen on the web page! Parts ordered... Dave

Recommended capacity and dimensions are listed on tindie page. wrote:

The NanoVNA output with older firmware is around the levels you posted. With Hugen's latest firmware it goes up to 0 dBm. Let's assume you are using the older firmware and you want to get a test level

Please excuse this post if it's been covered previously, but with a nanovna-v2 enroute via tindie, I realized I believe it is not fitted with a battery by default. Is the battery specification (part

All nanovna-h sold by us have version number marks on the PCB. Since rev3.4, we have also added version number marks on the shell labels. hugen

In case it matters - version 0.4.0-2-g7c2f745 No version marking on any of the PCBs as far as I can see (I took off the front and back covers).

Kerr, I have wound these high ratio transformers using FT50-43 and FT37-43 toroids and always found leakage inductance which affected VSWR, Bandwidth and Insertion Loss. I then read about W8JI's

Hi all, I bought a new NanoVNA-H on ebay and received it today. It seems to work, but when I connect it to a laptop using the supplied USB-A to USB-C cable, I get a warning "USB device not recognised.

Hi David, Do you have some information about the maximum dynamic range the pluto can do in sa/tg mode? [email protected]> a écrit :

Ground loop due to residual inductance. EMRFD has a detailed example of what that is and how it can degrade a filter. Experimental Methods for RF Design, ARRL press. Allison ----------------- No

Any idea when it is available at Ebay. I am lazy and would not want to open one more account to somewhere.

Are any these able to show close sidebands. Like what happens with 1kHz or 100Hz SSB modulation