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Thanks for the shout out, and glad that I could help! - Tim -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

Interesting... What was the design impedance of the filter? I am surprised at your results because the loading greatly affects the crystal filter characteristics. The usual way is to use a series

Roger, Most filters are passive and linear. A crystal (or ceramic) filter response is correctly transformed by the renormalization; I have used this feature several times. I agree that an active

Thanks -- I don't get the emails from this group. I just log into the Web site for groups.io. It may be the way it formats on the Web. Roger

Hi Stan, Shortsightedness on my part and I hadn't looked well enough and found your instructions which worked perfectly, thank you ever so much, Pete

Roger, Both the link DiSlord provided and your original link work fine for me. It may be your email provider chopping up the link. Tony [email protected]> wrote:

Bryan - The first one to suggest this was Tim Dawson so he gets the credit not me... Roger

Just a crazy thought from someone with very little VNA experience ..... SMA connectors are known to have a quite limited number of insertion cycles. Is it possible you have a connector that is no

Pete, you are having a driver problem. Windows11 has the most recent driver from ST, so it thinks it is the best one to use, and doesn't try to install the older driver that works with DfuseDemo and

For the HR'ers in the group, the H4 seems most popular. But get the LARGE SCREEN choice of any of them. Dave - W?LEV

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