Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Did so. It has become convenient to enter programming mode.
By
Aleksander Shalygin
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#12907
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Re: SWR with a NanoVNA
The earlier comments about mismatch and cable length are probably correct. You said you checked the SWR at the connection to the transmitter and it was correct. Now take the MFJ out of the circuit and
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Doug Reed
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#12906
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Re: duplexer
I am not the best source for info regarding duplexor tuning but I have done over 30 of them for hams in my local area. I'm not really aware of ANY of the cheap spectrum analyzer-tracking generator
By
Doug Reed
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#12905
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Latest version reintroduces 300MHz threshold crossover anomaly. I did not attempt to correct thru threshold adjustment. Otherwise, seems stable. Calibration and various device tests were successful.
By
Peter Finch
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#12904
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Good, ok i change 96kHz mode for AIC ADC (now increased external freq), possible it help (on my H4 it also give good result) Also i change IF to 8kHz (in my test got less noise) Additional not use
By
DiSlord
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#12903
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
On Sat, Apr 25, 2020 at 12:32 PM, Peter Finch wrote: ... This latest firmware version with reduced DAC sample rate is stable on my H4. As an aside, there is no harmonic anomaly around 300MHz. Plots
By
hwalker
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#12902
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
This latest firmware version with reduced DAC sample rate is stable on my H4. - I ran it on a short connector for 20 minutes with no error drift over time in the display. - I was able to successfully
By
Peter Finch
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#12901
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Re: NanoVNA-V2 from Tindie
I'd buy one in a heartbeat!
By
Jim Allyn - N7JA
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#12900
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Re: NanoVNA-V2 from Tindie
Awesome, I will see if some of the locals are interested. Thanks The PCB+partial PCBA would cost around ~$50 for 2pcs, and only slightly
By
Dragan Milivojevic
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#12899
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Re: NanoVNA-V2 from Tindie
On Sat, Apr 25, 2020 at 09:11 AM, Gabriel Tenma White wrote: Right now my biggest task on the firmware is adding moonrunes support which a lot of their domestic users are asking for.
By
hwalker
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#12898
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Re: duplexer
expected to shift a little when connected in the field. The bench tuning is a start. The tuning is completed up at the site by tweaking when all connections have been made. +++++
By
John Nightingale
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#12897
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Re: Bad NanoVNA-F Clones showing up
#nanovna-f
I am a partner of SYSJOINT, and I must clarify that BH5HNU used to be an employee of SYSJOINT. He was responsible for NanoVNA-F project, and -F was originally sold through SYSJOINT's Aliexpress
By
Alex
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#12895
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Re: NanoVNA-V2 from Tindie
On Sat, Apr 25, 2020 at 08:05 AM, Gabriel Tenma White wrote: Yeah sure, just change up the layout a bit, space things out, try to make it look like it's not a verbatim copy ;)
By
hwalker
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#12894
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Re: duplexer
I am not the 1st to respond, but I have used my NanoVNA to tune a 6 cavity Waco VHF and a 4 cavity, "Cigar tube" UHF duplexer (Ritron). Regarding notches When you approach 70db attenuation, the graph
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Larry Macionski
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#12892
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Re: NanoVNA-V2 from Tindie
On Sat, Apr 25, 2020 at 06:00 AM, <hugen@...> wrote: If you allow it, we look to produce a 4-inch S-A-A-2 for less than $80. ========================================================== Gabriel,
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hwalker
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#12890
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Re: NanoVNA-V2 from Tindie
What a twist!:)
By
aleks07111971@...
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#12889
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Re: NanoVNA-V2 from Tindie
如果您允许,我们看可以生产低于80美元的4英寸厂-础-础-2.
By
Hugen
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#12888
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Re: duplexer
From: David Eckhardt Spectrum analyzer plus tracking generator. ========================================= Poor man's 70 MHz-6GHz version:
By
David J Taylor
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#12887
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Re: VNA
If you're planning n buying one I suggest the -H4. It goes to over 1Ghz, has TDR already loaded and is available from R&L Electronics for $60 or so which is a fine price. I've one and really like the
By
Ron Spencer N4XD
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#12886
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Re: NanoVNA-V2 from Tindie
Hello Herb and others, We already have official support at the /g/NanoVNA-V2/ group, user *nanov2support *from the HCXQS group. Cheers. *73 de Luís, CT2FZI* *QRV @ 145.300 MHz |
By
CT2FZI
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#12885
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