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Groups.io cutoff my link as well. Here is another attempt... https://tinyurl.com/copper-portZ Roger

Unfortunately the link you provided was cutoff and did not work. Hopefully groups.io formats this one correctly... https://coppermountaintech.com/help-s4/port-reference-impedance-(z)-c.html Copper

Roger, Resolved: You nailed the issue. I thought for sure I was an SI type but sure enough the HW version is 4.3_MS. The flash changed it to SI. The unit will now calibrate with a stimulus of 50khz to

On my older firmware, the menu selection is config/expert setting settings/more/mode. The mode setting toggles between Si5351 and MS5351. This path may be different in 1.2.40. Tony AC9QY

The label on the back does indicate if it’s using the MS5351. Someone (and I can’t remember whom) mentioned that firmware 1.2.40 included support for both the Si5351 and MS5351. After flashing,

Hi Gabriele, My signal generator is the FY6800 (60 MHz). I believe the FY6900 is very similar. I do not use it with my nanoVNA nor my tinySA. I have checked the output levels at 10 MHz using an old

Apologies for the repeat of an ongoing topic. As a recent purchase I am banging my head against the wall attempting to update the firmware for my nanovna-h. I have no issues configuring and using it

Yes that setting is important. IF the OP bought his H4 a few years ago it is the SI version. I thought the label on the back indicated if it was an MS version It is easy enough to try both settings

If your primary use will be below 1GHz, get the H4. If you expect to do much above 1GHz, get a V2 or LiteVNA-64. [email protected]> wrote:

Hi Tony, I thought I had the noted somewhere but cant seem to locate it.now. I should have backed it up. I wonder if my amazon history would yield the answer. It seems to work fine if I dont cross one

I have lost your initial message, but if this is an -H4, isnthe MS/SI option ser correctly? That can change when flashing. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

Bryan, What was your original firmware version? Have you tried re-flashing back to that version? This would eliminate hardware concerns and focus solely on firmware. I noticed there are 10 issues

COULD IT BE? There are three ranges noted on the back label. 50k-300MHz, 300MHz-900MHz, and 0.9GHz-1.5GHz. If my stimulus start and stop crisses over one of these ranges then I see this happen. So

UPDATE: It seems this only happens when my stop freq is above 300mhz. Is this normal or is my understanding flawed. I may have never noticed this because I don't recall ever using it that high. Bryan,

You might like to include the LiteVNA 64 in your list: https://eleshop.eu/litevna-5341.html Cheers, David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email:

On my H4, I recently started having a problem calibrating. During cal the smith chart is sweeping wildly displaying a lot of straight angled lines about the cursor. In the end the cal fails as

Depends on what you want. The H4 has less frequency range but I like the larger screen. I suppose you could get one of each. Zack W9SZ [email protected]> wrote:

For a newie using wanting to use NanoVNA which is better the NanoVNA F V2 or the H4

TNX for replies following the First Interest Groups Law: "At every question will always follow unwanted suggestions" 73 [email protected]> ha scritto:

Very hard to see what it would do better than the NanoVNA for filters etc You don’t need the excess power and the output range is pretty limited for harmonic filters etc