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There is no second harmonic from the square wave of the Si5351, only the 3rd and 5th harmonic.? Also if you look at the specs of the SA612 it's only up to nominally 500MHz. The latter is pushed way

I'm using the latest FW 08_02_19 800_ch version. I have a possible bug. Set sweep range: Start 46 MHz Stop 54 MHz Then set Marker | Center. You'd expect the marker to be a 50 MHz, but instead it's at

.... and frequency error on my unit at cold start is 237 Hz at 900 MHz = 0.26 PPM WA8TOD

Elaborating: The "measurement range" quoted by the manufacturer is the range between the displayed carrier level and the displayed noise level. That range deteriorates from 300 - 600 MHz because the

Jim, Go to your local thrift store or recycling depot (or junk box) and look around the electronics section for portable devices that might use that type of switch. A lot of MP3 headphones use them.

Mine meets that specification. WA8TOD

So is the vendor lying when the manual says:Measurement range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB(600M-900MHz);Port swr <1.1 Frequency error <0.5ppm?Sent from my Samsung Galaxy smartphone.

Is true its handy to have that switch working, but you can still fully operate the nanovna without it. Everything from the touchscreen can be done, including drag and drop the markers... Cheers! LL

Hi Oristo This looks great! Really helpful. I have spotted a couple of differences between it and what I'm seeing with the 2 trace antenna analyser firmware on my Nano. I believe the 2 trace version

Anyone know where to get parts for these. I broke the Multifunctional switch (Jog Switch) on mine and would like to buy a replacement. Jim K.

Fahnestock clips take me back to Jr. High School Electric shop, where I got my ham radio license in 1956. Stuart. K6YAZ

Hello All ! with my unit the charging is limited to just under 500ma regardless even tho the charger is I am using is good for twice that much. So far I am pretty impressed with this little gizmo !

Dave, I solved this to some extent by cutting screwdriver slots in the back of the short and load, allowing the contacts to be held (somewhat) steady while the nut is tightened. It is a bit awkward to

The error mathematics for a one port VNA measurement with SOL is interesting to investigate. Given the assumption that the short and load are handled as ideal with reflection coefficients of -1 and 1,

There appears to be TWO different loads provided with the NanoVNA instrument. I reported this in an earlier message. The 50 ohm termination with the white gecko unit was pretty poor and demonstrated a

Wow, I have not seen those since I was a child, say age 13! Yes, I suppose they would work fine! What I had in mind and what I am currently having pretty good success with is a Pomoma grabber cable to

Anybody wish to volunteer to perform the task of loading and comparing firmware’s and/or versions/release levels? It would be nice to avoid the judgmental pitting of one against any all others; so I

I made some further measurements using the 8753 setup. I did the OSL cal on one port and looked at both the Smith chart as well as S11. I didn't bother with the cheap BNC load.? I used averaging (16)

Alan, Alligator clips are so yesterday... I've got some great Fahnestock clips for you! ;-)

Yes, I had thought about a video on that. I have a video camera, but since I am a Unix person I had problems getting the data off of the card reader. I tried a virtual machine, but that didn’t work.