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thats all very interesting ... I'll need to read it a few times to 'digest' all your findings. thanks.

Quarter wave transformer for what frequency???? 54 MHz or 600 MHz.? ? ?Can't have both! 73? Kent WA5VJB Minicircuits does sell broad band 50-75 Ohm transformers.

The best way would be to use a quarter-wave section of 62 ohm cable. Lacking that, you may have to build some sort of antenna tuner. 73, Zack W9SZ

Good question, I'm sure part of it involves no 50-ohm cables, and probably calibration with a 75-ohm load termination, but there may be some other corrections to VSWR, etc. Let us know! 73, Willie

Testing a couple of TV antennas for Signal strength and just curious about what they might look at on the NanoVna. I'll be looking at them through about 70 ft of RG-6 and a SMA to F adapter. Measuring

An excellent piece of work Gary.

The other hams have good ideas but I am older now and climbing up the hatch and into a HOT attic is not going to happen! I just set the nanovna to cover 3MHz to 30MHz and scanned SWR of each to find

Just be sure not to deal with Nooelec. WL

I bought my H4 from R&L, along with adapters to PL259 and BNC, and am quite happy with what I ended up with... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest --

I did a few systematic experiments using my nanoVNA to measure the properties of 49:1 transformers. It helped me to understand these beasts better... Write-up here:

It's the same in other fields.? In optics, density is the negative log of the transmission, so something that transmit 0.1 of the incident intensity is a positive density of 1.? Density is like

Thx for this very helpful hack - this helps me a lot during FW development. But it is sufficient to add the wire (easy task), no need to change the resistor R5 from 1K (original) to 5K (as H4) - this

I had not anticipated this would lead to so many comments. Thank you for great insights. Maybe it feels more correct if we just say RETURN (S11) and leave the word "loss" out. I mean for an antenna,

Lou, don't forget Hz for Hertz!

Need save config Config-Save

I had a similar problem. I placed various value resistors on the coax in the shack where it was easy to work, (50,10,220 etc), then took an ohmmeter in the attic and identified each line. Only one

Negative loss is gain. Coax loss per foot is X not negative X. Attenuation is X not negative X. A really, really, REALLY, simplistic example. I lost 20 pounds. I didn't loose negative 20 pounds. As

Disable calibration, set frequency range 280-300MHz See frequency point there start this Change THRESHOLD frequency to this (avaible in expert menu settings).

Hello! congratulations on your purchase! It is very interesting to look at the PCB of your NanoVNA v3. 5! If of course it does not bother you! Sincerely yours!

Hello, I've been considering purchasing one of these for some time. I'm not an engineer or anything even close, but I am an amateur radio operator who enjoys experimenting with antennas, and this