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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

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,

What a twist!:)

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.

From: David Eckhardt Spectrum analyzer plus tracking generator. ========================================= Poor man's 70 MHz-6GHz version:

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

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 |

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

Ok, it not i2c bus Now try not use 96kHz DAC, revert back to 48kHz

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,

Thank you for your input.?Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable smartphone

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...

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

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

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

OK. It is properly normalized. Personally, I'd believe the NANOVNA. Dave - W?LEV -- *Dave - W?LEV* *Just Let Darwin Work* *Just Think*

Thanks

Yes, Ive done the required calibration. Problem is there are times the needle wont meet the calibration point. Im sure the settings were correct. There are 3 separate settings for 5w, 20w and 200w. I

On Fri, Apr 24, 2020 at 02:24 PM, Peter Finch wrote: It is really odd. No matter what connections I make (open, short, load, known antenna...) the charts remains pretty much the same random mess.

Question I see there's 3 of these "VNAs", one has small screen about 2.5 inches, another is VNA-4, and another VNA-F, Are the all the same or is there a big difference in what they do?Sent via the