Re: Nano VNA slides latest edition via k3eui Barry
Hello, Has your presentation been "YouTubed"? Thanks, larry
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Lawrance A. Schneider
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#20731
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Re: Nano VNA slides latest edition via k3eui Barry
Hello, Has it been "YouTubed"? Thanks, larry
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Lawrance A. Schneider
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#20730
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Re: Hardware deficiencies when measuring high impedance with S21
Hello Klaus, how about the ojisan firmware. I have added a patch (2.8 inch LCD only) to make a screenshot with a Python program, see: https://www.rudiswiki.de/wiki9/nanoVNA-V2-ojisanFirmware 73, Rudi
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Rudi
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#20729
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Re: NANOVNA-H GONE NUTS
You made calibration, and after you measure calibration load on this device and get 50 Om? Or you measure calibration load on different device?
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DiSlord
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#20728
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Re: Hardware deficiencies when measuring high impedance with S21
Hi, which firmware have you used? I found out that the newest cloned firmwares for the SAA2 has a worse quality than older. The firmwares until Sept. 2020 are OK. Later versions are not usable. I
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Klaus W?rner
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#20727
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Re: NANOVNA-H GONE NUTS
load measured 50.1 on my VOM as soon as I say DONE it starts is there a repair facility anywhere? Silly thing, I really liked using it for antenna analysis. sigh..
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paul kobetz
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#20726
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Re: Using a nanoVNA to test a transmitter
#newbie
#general_vna
Yes. 5W is +37 dBm. This attenuator can handle 5W continuously, and its 41 dB attenuation will reduce the transmitter signal to -4 dBm. The TinySA max input power is +10 dBm with its internal
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David McQuate
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#20725
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Re: Using a nanoVNA to test a transmitter
#newbie
#general_vna
So, in theory an attenuator like this connected between a 5W transmitter and TinySA would work? http://www.qrpkits.com/attenuator.html
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Cierra
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#20724
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Re: NANOVNA-H GONE NUTS
Need check calibration kit/RF connectors/cable If before calibration all look good, i think problem in 50 Om calibration, check it
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DiSlord
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#20723
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Re: NANOVNA-H GONE NUTS
This is what it does immediately after I save the cal data to 0 slot. Wow
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paul kobetz
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#20722
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Re: NANOVNA-H GONE NUTS
ok it accepted config and all data cleared... yea So far so good.. 73 Paul
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paul kobetz
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#20721
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Re: NANOVNA-H GONE NUTS
HI Roger got it into terminal mode and ran Clearconfig but its not happy w the "1234" Then what ???
By
paul kobetz
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#20720
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Re: measuring Capacitance or Inductance
Drake TR7/TR4310. 73 -Jim NU0C "Dragan Milivojevic" <d.milivojevic@...> wrote:
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Jim Shorney
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#20719
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Re: NANOVNA-H GONE NUTS
The file you want is NanoVNA-App.rar. It is a rar archive, which is similar to a ZIP. 73 -Jim NU0C "paul kobetz" <pkobetz@...> wrote:
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Jim Shorney
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#20718
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Re: measuring Capacitance or Inductance
Forgot to ask, what's this legendary piece of equipment, it has transistors so it can't be that good ?
By
Dragan Milivojevic
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#20717
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Re: measuring Capacitance or Inductance
Not the one on the right. See my previous post. 73 -Jim NU0C "Dragan Milivojevic" <d.milivojevic@...> wrote:
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Jim Shorney
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#20716
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Re: measuring Capacitance or Inductance
Yeah, I remembered that about the one on the left after I sent the pic. The one on the right he called a "buzz kill". 73 -Jim NU0C "Bob Albert via groups.io" <bob91343@...> wrote:
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Jim Shorney
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#20715
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Re: measuring Capacitance or Inductance
In parallel with a 10nF cap ...
By
Dragan Milivojevic
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#20714
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Re: NANOVNA-H GONE NUTS
Can you connect to the NanoVNA-H with the NanoVNA Sharp program? Do a calibration and remember to press Reset before you start and Done when you are finished. Save to a slot like 4. Then see if you
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Roger Need
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#20713
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Re: measuring Capacitance or Inductance
The left hand one is bypassed with a .01 so that doesn't count.? I am puzzled by the other one; what's it supposed to do?
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Bob Albert <bob91343@...>
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#20712
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