MiniVNA Tiny works as supposed with my Samsung Galaxy J5 over a standard OTG USB cable. No problems. Many thanks for this. I can't define the number of samples on the calibration though. I think it has a fixed number of cal points. (update 19/08/2016: I've noticed that there is some great discrepancy on the measurements between the Android Blue VNA and the desktop application vna/J 3.1.9. For example, the cable loss of a 0.5m RG58 at 144MHz is given as 0.6dB, while on the vna/J as 0.28dB, which is half of the BlueVNA calculation. I can, however, suspect that the limited cal points on the BlueVNA, compared with the 20000 cal points on the vna/J I used can be a reason for this difference.)
The miniVNA Pro along with the Blue VNA app is a dynamite combination. Not only do you have all the capabilities of the VNA Pro, you add the ability to analyze your antenna at its RF connector so you eliminate any coax influence. You can also stand far enough away so that your body does not influence the readings. The great part is being able to view all the parameters of whatever you are examining on your cell phone. Just as with the full PC Java version, when you run a test, the app records all of the parameters which you can review one by one, or as overlaid, or download to your PC later. You can pinch out or in to expand or contract the scale and, basically, you have all the functionality of the full PC program in your hand. I love this app and find it exceptionally useful in the field. This is probably the most easy to use analyzer and app made for use by ham operators, and the most useful.
Best application for VNA It is the best application I've tried for my VNApro antenna analyzer. This Smartphone integration is better than the similar application on PC.
Thanks Dan for this wonderful app. I bought a miniVNA tiny because of this app. I did a quick Cable test with the 0.2m RG223/U cable with a known velocity factor of 0.66, but the results after a Run, kept showing length of cable is 0.15m. That is 25% difference. Not sure what did I not do right? I test the cable with the laptop software and that was accurately measured at 0.66 velocity factor, and length as 0.2m. Appreciate your advise
Used to work extremely well via bluetooth but now fails (unusable) with a lot of Java exceptions since phone upgraded to 6.0.1 - is this a known issue?
Changes in 0.9.6-3:
- full screen (immersive mode) with Android >= KitKat - navigation buttons are now hidden
- Bluetooth broken again in Android 6. Add back ACCESS_COARSE_LOCATION permission as this is required for Bluetooth discovery
- files saved with version < 0.9.5-1 are loaded incorrectly
Please send me a mail if you have any issue with the application before giving a low rating in Play Store. Thank you. Dan