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Mike,Look at the schematic at the end of the July user guide.?The 5v output from the inverter powers the 612 mixers and also feeds an LDO 3v regulator that powers everything else.? On Fri, 4 Oct

Reinier, Gabriel only pops in now and then to let the group know how things are progressing. She posted that Maxscend rf switches will be used because, "the maxscend switches do not have the shunt

33 : the mathematical expressions hello, Allow us, please, to emphasize that the mathematical expressions we used for: 30 : our final report 1 - 4 Oct 2019

Yes, "Return Loss" s o m e t i m e s is a misnomer: If used in context with simply two different impedances meeting at a connection. This can be understood as a complex generator's inner (serial)

Any .dfu installed becomes the only firmware, replacing previously installed firmware. I know of none. No real benefit, since reflection bridge components are fixed for 50 Ohms. Firmware based on

Steven Maas if I recall in one of his little texts, mentions, I dis like the term return loss. Its one of those EE crazy terms! That said, I never discuss return loss with any thought whatsoever. All

32 : a REGION executable - also @Gary O'Neil : 27 September 2019 - /g/nanovna-users/message/3259 26 September 2019 - /g/nanovna-users/message/3091 26 September 2019 -

Correct. The measurement conducted is a SPOT NOISE FIGURE measurement. The VNA or a SA may be set into the CW or fixed frequency receive mode. If you desire a swept NF measurement, than perhaps steps

Thanks for all these info, compliments. This interests me: "DMR_M_10KHz_sept-13-19.dfu Such as these were for enhancements, in this case 10KHz instead of 50KHz minimum. I >>guess<< many enhancements

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I looked for BNC with 0.1" spacing, but so far found only this: http://daqstuff.com/500057_brd_bnc_conn_kit.htm

Need to place the file with the electrical circuit separately. Some do not suspect that it is in the instruction manual. Many questions will disappear.

31 : On the Uncertainties of the "Standards" - Part II - 23 : On the Uncertainties of the "Standards" - Part I - 30 September 2019 /g/nanovna-users/message/3517 @ Jeff Anderson

Thanks for the response! So, if I * properly calibrate at the VNA port * plug in a candidate cable terminated with calibration load * observe no appreciable reflection .. then that cable unterminated

Hello Oristo Yes just by using the Electrical delay, but there is always a but, the delay in a transmission line is frequency dependent and if the impedance is not precise 50 ohm we might have an

Hi Rune, I just tested a SFZ450F ceramic filter. First I had set a span of 50kHz and I set 3 markers. Than I changed to 50kHz span and all the markers were gone. If you try to set a new marker in the

What "a can of worms" this subject opens up.?I noticed the Hewlett Packard rarely if ever referred to return loss as a hardware specification; it was always specified in terms of SWR. Personally I

Another option, If you want to plot smith charts from Touchstone .s1p .s2p files, Simsmith also does this. It is Free. <http://ae6ty.com/Smith_Charts.html> I am eagerly hoping someone integrates this

The internal LiOn battery (if connected) is like 3.7 to 4.2V. It is normally charged from externally-supplied USB 5V. This suggests to me that the innards run on something less than 3.7V (most likely

You must have a very cheap source of the ADF4350 since MAX2871 is just around 8 USD. Which RF switch do you use to switch between the si5351 and the ADF4350? Most switches are not specified below a