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Re: SWR on impedance other than 50 ohms #measurement
Note, with clearer screen captures: 50-ohm cal: S11 reads 304.88 ohms real as a folded dipole shoud (on the right of the chart right where it sould be for 300- ohms real) 300-ohm cal: S11 reads 53.5
By W0LEV · #11014 ·
Re: Android app cable not working!
--------------------------- Same with me. I used the charging cable that came with my Xiaomi Mi9, with the USB C connector connected to the NanoVNA, and the USB A connector connected to this adapter
By Alberto I2PHD · #11013 ·
connectors grounding
Hi all,just a quick question,i notice the sma connectors on my vna are fragile where they join the pcb,i have some beter ones,i thought of fabricating a piece of copper sheet and mounting them on
By Paul M3VUV · #11012 ·
Re: Simultaneous S11 and S21 measurements ?
Yes ________________________________ Sent: Monday, February 17, 2020 4:20 PM To: [email protected] <[email protected]> Subject: [nanovna-users] Simultaneous S11 and S21 measurements ? Is
By KC1MBX@... · #11011 ·
Simultaneous S11 and S21 measurements ?
Is the nanovna capable of showing Simultaneous S11 and S21 measurements in one Sweep, like the DG8SAQ VNWA 3EC ? I think I recall something about this requiring two detectors? Beginner. Neal
By Neal AB6G · #11010 ·
Re: SWR on impedance other than 50 ohms #measurement
Thanks, so the only thing I should do is to multiply the impedance/resistance/reactance values by 6 and they should be correct? Also looks like the attached picture became very low resolution after
By goscickiw · #11009 ·
Re: SWR on impedance other than 50 ohms #measurement
Having calibrated to a 300-ohm standard, then why not multiply the measured value by 6? I believe there is a place in Saver for a multiplier or arithmetic. Note in your 300-ohm cal. presentation of
By W0LEV · #11008 ·
Re: Functions of the rocker switch
Yep, I found this behavior after FW update... rocker switch change ¡°center¡± frequency instead of moving marker.. sometimes works weird on my unit and it drives me crazy...
By Stepan Synek · #11007 ·
SWR on impedance other than 50 ohms #measurement
Is there a way to make the NanoVNA show the SWR as close to 1:1 on 300 ohm antennas when measuring directly without an impedance transformer, while still showing correct impedance? I need to measure
By goscickiw · #11006 ·
Re: Android app cable not working!
As I understand this, if a cable can communicate the phone with a PC, it cannot be used with a phone. A "normal" cable is due for connecting the PC, as a host, with a peripheral, being it a disk, a
By EB4APL · #11005 ·
Re: Android app cable not working!
Yes the app works fine.
By Ronan Daly · #11004 ·
Re: Android app cable not working!
Thank you, I wasn't enabling that flag (didnt see the documentation, moving too fast and assumed the s/w would provide a dialog about any settings, my bad) So the flag is set in the android chrome,
By Kayak · #11003 ·
State save/recall #firmware
I'm running nanoVNA @edy555 version firmware v0.5.4. Is there the ability to save the state of the nanoVNA over power cycles? I have the battery installed, and I can recall 0-4, but not save anything
By g8kuw@... · #11002 ·
Re: Android app cable not working!
On Mon, Feb 17, 2020 at 09:23 AM, Ronan Daly wrote: " I use a generic unbranded one that came with a chinese tablet and it works fine with my Galaxy S7."
By hwalker · #11001 ·
Re: Android app cable not working!
If your phone has a micro usb port then try an adapter like this one
By Ronan Daly · #11000 ·
Re: Android app cable not working!
On Mon, Feb 17, 2020 at 09:07 AM, Kayak wrote: I went to your web app online with my samsung (j7 prime) and still "no compatible devices found"
By hwalker · #10999 ·
Re: Android app cable not working!
Thanks Herb I must have missed that. This time, I went to your web app online with my samsung (j7 prime) and still "no compatible devices found".. This is the cable (below): I am not sure what to try
By Kayak · #10998 ·
Re: Android app cable question
Kayak, That's one of the ones I got but it didn't work with my phone. -- Chuck, W5USJ
By Chuck Carpenter · #10997 ·
Re: Android app cable question
Herb, That may be the problem I'm having. Tried two different cables and NADA... My phone is a micro type so I got USB-C to USB-Micro/M -- Chuck, W5USJ
By Chuck Carpenter · #10996 ·
Re: Jog wheel switch causes problems #parts
Also, see this topic /g/nanovna-users/topic/69846009#9783 . - Herb
By hwalker · #10995 ·