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DiSlord, Well, I said problem solved, but I flashed Firmware 0.8.4.4 (Built 27/04/2020 -21:32:13) again,? calibrated NanoVNA standalone 10kHz to 2.7 GHz and calibrated NanoVNA-Saver 290MHz to 320

I'd be interested , I have a DSP Receiver which also has people working on a spectrum analyzer program for it which I've been playing with. It, however it has to be tired to a computer to use it.

Hi Erik, I am retired and already participating in firmware evaluation and testing for the OpenGD77 project. This is a project putting hotspot MMDVM code and replacement firmware inside a GD77

DiSlord, I reinstalled NanoVNA-Saver, left the firmware as it was (previous working) and calibrated in NanoVNA-Saver, same problem. After this I realized that while calibrating 2 port I had CH1 loaded

DiSlord, I flashed the previous firmware (Built Apr 25-2020 -23:08:04) that worked well for me before and now it behaves the same as the later firmwares, so probably something has changed in my

DiSlord, This morning I started using the NanoVNA-H4 loaded with your firmware number 3 as yesterday. . 1) Started NanoVNA-Saver. 2) Did a reset in "calibration". 3) Did a full calibration (2 port).

DiSlord, Don't understand either, I always do reset before calibration. Will flash the previous working firmware again today to check if it still works. Jos Op 27-4-2020 om 23:44 schreef DiSlord:

I have made a *table* to better see what is the result of the measurements from the PDF file. Calibration MHz Scan MHz SWR RL dB 0.05 - 900 1 - 30 1.20 20.56 1 - 30 1 - 30 1.19 21.12 0.05 - 900 13 -

I have made a table to better see what is the result of the measurements from the PDF file. For my understanding here the *precision of the frequency* is important. Calibration MHz Scan MHz Step KHz

Not sure yet. Target is comparable to one of the nanoVNA family -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

If you really still need testers, I might be able to contribute. For my day job, I use an HP3585A for phase noise measurements.? Impressive dynamic range on that tank. Also a Rigol for field

This very timely as I have spent the last couple of days looking at Spectrum analyzers to replace my old CTE one. -- Terry VK5TM https://www.vk5tm.com ( https://vk5tm.com )

Dave is correct. The VSWR doesn't vary along the transmission line except for a small variation due to loss of the transmission line. If you do see the VSWR vary, that indicates imbalance on the

On Mon, Apr 27, 2020 at 03:16 PM, Eric Furness wrote: I Upgraded to 0.1.1 All worked ok. How do you get to the TDR function? ===================================================== DISPLAY->TRANSFORM

Only if have problem, if you get correct result, not need do it. Recalibrate need if threshold value change (possible not correct calibration point near harmonic change)

On Mon, Apr 27, 2020 at 01:18 PM, DiSlord wrote: Please not use old calibration, recalibrate after update ========================================= DiSlord, I haven't had any issues with 0.8.4.3 or

DiSlord, Flashed number 3, calibrated NanoVNA-Saver, measured S21 and 49.85 standard see the pictures. Call it a day for now. Jos Op 27-4-2020 om 22:18 schreef DiSlord:

i don`t understand 1 variant is last firmware 2 variant - is 0.8.4.3 (Only 8kHz IF change) 3 variant - is old 0.8.4.4 (2x external freq) You not fogot reset self NanoVNA calibration before calibrate

DiSlord, Flashed number 2,? threshold set to 300MHz,? recalibrated NanoVNA-Saver,? S21 at 0 now,? R+jX? R still not shown, S11 49.85 Ohms standard? way off , Marker 1 an 3 not shown. See