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Hello - I have some advanced troubleshooting questions in regards to touch screen operations - The touch screen operation hasn't worked since day one on one of my NanoVNA's, likely a clone (no shields

Measured on my HP spectrum analyzed. No attempt at precision, and so not calibrated instrumentation results. Relative (between firmware revisions) levels are fine and adequate for the intended

Gary, So, exactly how did you measure those power levels? Did you somehow only measure that component of the incident signal that was at the frequency of interest? I totally agree with all sentiments

Hi Jerry; The power levels I posted are measured at the CH0 port. I haven’t been ambitious enough to try digging into the source code to see where the levels were set. Measuring takes less effort.

Minor correction to my last post: < 1.5 volts into 50+50=100 ohms, so 1.5/100 = 0.015 ma. Jerry, KE7ER

No, it's not the latest firmware. I'd recommend going to the io.group's files, go to DiLlard's NanoVNA-H Firmware, go to NanoVNA v0.8.2_96kHzIF_3.2kHz_sweep_points.rar, and extract NanoVNA-H4

That's done with a spectrum analyzer, not a VNA. >

Ahh I see! Makes sense now! But what if you want to analyze the performance of let's say a complex receiver? Don't you need a high bandwith resolution to see the spurs and intermodulation products and

Newbie NanoVNA-H4 user here with some questions: 1) My unit arrived a couple days ago with firmware version 0.5.0. Is this the latest for the H4 model? 2) Has anyone using macOS with Parallels running

Gary, I'm guessing you might have gotten the -7 and -17 dBm figures from the nanovna firmware, and that this jump at 301mhz is due to a switch from the fundamental to using harmonics. So there is

Roger; With Hugen’s NanoVNA-H-AA installed, the output power of port 0 measures ~ -7 dBm up through 300 MHz. At 301 MHz it drops to -17 dBm and holds pretty tight to that up through 900 MHz. The 900

Thanks all for your great answers! There was indeed no ground, so stupid me :) One of the antennas was a groundplane antenna, and I would have expected somewhat better behaviour there. It was for 2m

If you don't want to mess with console commands could calibrate with a 3dB pad in the cable for the S11 measurement. The round trip attenuation for the reflection would then be 6dB. The bridge is

Attach screenshot example from SD card Also for test i use nanoVNA Saver, and it also can grab 401 point and 800x480 image As i see H4 platform allow connect big display, only one slowdown - Smitch

Many ask about bigger display. For test perfomance i order 7` display module 800x480 resolution on RA8875 chip + FT5426 capacitive touch (exist resistive touch variant, but for finger control this

What frequency did you use to measure the power output? The power is increased when using harmonics. Roger

Gary - The full list of Console commands including the Power one are listed in this groups Wiki. /g/nanovna-users/wiki/12760 These Console commands have been in the NanoVNA firmware

The spec on that one is SWR<1.2 which means a 20% tolerance, or resistance from 40 to 60 Ohms. Most of my 50 Ohm loads are much closer than that. Bob

<https://www.ebay.com/itm/RF-5W-BNC-Termination-Load-5-Watt-Dummy-Load-DC-3GHz-50-ohm/333187213265?hash=item4d938167d1:g:UBMAAOSwTnBc0lU9> Link on eBay for a 5W BNC dummy load with heat sink for $9.75

Hi again Roger; Forgot to add... I measure -7 dBm out of the Ch0 port of my original NanoVNA v.3.1 board running Hugen’s H -AA firmware. This is 6 dB higher than edy555’s original 900 MHz firmware