NanoVNA-H4

[HomerBB]

I got a little bitty nanovna a while back and didn't like it. I fussed about it and gave it away to someone who uses it.
Now, I'm trying again with a newer version 4" screen model. I may need help...

 

[Low_Boy]

There is a guy on you tube, 102 mobile that makes antennas and watching him use it makes it look like a easy task

 

[Captain Kilowatt]

I got a little bitty nanovna a while back and didn't like it. I fussed about it and gave it away to someone who uses it.
Now, I'm trying again with a newer version 4" screen model. I may need help...View attachment 57045

I bought the same one last fall. Never got around to learning how to use it yet. Oh well, one of these days I will.

 

[HomerBB]

I bought the same one last fall. Never got around to learning how to use it yet. Oh well, one of these days I will.

Couple old dogs trying new tricks. They say it ain't no use...

 

[Moleculo]

Send it to me...I'll figure it out and shoot a video and then send it back.

 

[binrat]

I got a little bitty nanovna a while back and didn't like it. I fussed about it and gave it away to someone who uses it.
Now, I'm trying again with a newer version 4" screen model. I may need help...View attachment 57045

I bought the same. Tried it outside tuning portable antennas. Drove me crazy so I sold it.

 

[HomerBB]

Send it to me...I'll figure it out and shoot a video and then send it back.

I have at this point gotten it calibrated, set it to read SWR, and checked every antenna system I have from the shack. What I haven't figured out is whether it's possible to limit the display to showing info/traces for SWR, Resistance, and Reactance only, and how to do it.

 

[HomerBB]

I bought the same. Tried it outside tuning portable antennas. Drove me crazy so I sold it.

If an analyzer that covered 160m - 70cm didn't cost so much I would have gladly bought one instead of the nanovna. When the things cost as much as your radio and antenna system combined that's just too expensive.

 

[HomerBB]

My NanoVNA-H4 experience has come to an abrupt end. The thing is too fragile. The least amount of pressure on the SMA connectors and they tear off the board. Now the terminal itself is broken and I lack the skillset to make a repair. Even if I had the skills one of 4 solder points on the terminal is broken off and I'm without a replacement. I now have an $80 piece of junk.

 

[Captain Kilowatt]

My NanoVNA-H4 experience has come to an abrupt end. The thing is too fragile. The least amount of pressure on the SMA connectors and they tear off the board. Now the terminal itself is broken and I lack the skillset to make a repair. Even if I had the skills one of 4 solder points on the terminal is broken off and I'm without a replacement. I now have an $80 piece of junk.

Well that's not good. I bought a set of SMA adapters and a couple of short SMA-SMA cables to allow movement without stressing the mounted connectors. SMA connectors are far too fragile to be connected directly to even RG-58 cable.

 

[HomerBB]

I suggest if anyone buys one they should add some silicone between the SMA connectors and the VNA body.
Mine broke just trying to finger tighten the SMA nut onto the connector. The spacing is too close and the connector being unsupported by anything but surface mount type solder joints makes for an awkward potentially disastrous weak joint.

 

[HomerBB]

I have ordered this test kit so as to use one of the SMA terminals as a replacement for the broken one on my VNA. I have a friend who may be able to restore it.