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
·
#12897
·
|
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
·
#12895
·
|
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
·
#12894
·
|
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
By
Larry Macionski
·
#12892
·
|
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,
By
hwalker
·
#12890
·
|
Re: NanoVNA-V2 from Tindie
What a twist!:)
By
aleks07111971@...
·
#12889
·
|
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
·
#12888
·
|
Re: duplexer
From: David Eckhardt Spectrum analyzer plus tracking generator. ========================================= Poor man's 70 MHz-6GHz version:
By
David J Taylor
·
#12887
·
|
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
·
#12886
·
|
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
·
#12885
·
|
Re: NanoVNA-V2 from Tindie
Hi Gabriel, I can only say they respond in a very correct way to emails. I asked if I could buy another one and get it sent by an express service like DHL or Fedex. Their answer: The typical total
By
Reinier Gerritsen
·
#12884
·
|
Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Ok, it not i2c bus Now try not use 96kHz DAC, revert back to 48kHz
By
DiSlord
·
#12883
·
|
Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Ok, I installed firmware 0.8.4.3 "stability test variant" with config clear. This did not resolve the problem but I made an observation. The effective error increases with each sweep iteration,
By
Peter Finch
·
#12882
·
|
Re: VNA
Thank you for your input.?Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable smartphone
By
w2dwl <w2dwl@...>
·
#12881
·
|
Re: VNA
On Fri, Apr 24, 2020 at 04:14 PM, David Eckhardt wrote: ... Personally, I prefer the -F as it has a metal case better at keeping ambient RF fields out of the electronics of the instrument...
By
hwalker
·
#12880
·
|
Re: NanoVNA firmvare, compiled by DiSlord
#firmware
Yes. Sample attached. I adjusted threshold from 295-305MHz by 1MHz with no change. Then, as noted above, I swept ranges below 300MHz (no harmonics) with similar results. Peter
By
Peter Finch
·
#12879
·
|
Re: VNA
Personally, I prefer the -F as it has a metal case better at keeping ambient RF fields out of the electronics of the instrument. The small screen of the original is spiff, but just a bit too small for
By
W0LEV
·
#12878
·
|
Re: NanoVNA-V2 from Tindie
When you were doing prototype runs what was the price of JLPCB assembly service per board? For ham clubs getting a few boards and soldering a few parts by hand is maybe an interesting proposition. How
By
Dragan Milivojevic
·
#12877
·
|
Re: SWR with a NanoVNA
OK. It is properly normalized. Personally, I'd believe the NANOVNA. Dave - W?LEV -- *Dave - W?LEV* *Just Let Darwin Work* *Just Think*
By
W0LEV
·
#12876
·
|
Re: SWR with a NanoVNA
Thanks
By
KK4JOW
·
#12875
·
|