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NORMALIZED IMPEDANCE AND ADMITTANCE.In addition to the hardware modification, my understanding is that you will also need to also change the bootloader before the new firmware will work properly. TITLE DATE SMITH CHART FORM ZY-01-N Microwave Circuit Design - EE523 - Fall 2000. The name 'Wikipedia' is a blending of the words wiki (a.Citation preview. It is supported by the Wikimedia Foundation and based on a model of freely editable content. So, I'm trying to take the lazy route by finding out if someone has already built a ready-to-go firmware for such a combination.Wikipedia is an online free content encyclopedia project helping create a world in which everyone can freely share in the sum of all knowledge. For installation of the compiler for the arm platform.

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V2Plus firmware is still open source and you can read the code to see how the sweep speed is increased. Regardless, there is a noticeable degradation in> performance of the unit in every aspect other than the increase in sweep' V2 plus has many more hardware changes than the published '3 capacitors/resistors' upgrade, which doesn't completely upgrade your device to v2plus but allows you to get the sweep speedup. Perhaps the SAA2N board is not a very good copy of the> SAA2? I'm not sure. And thanks for your work on this.> I installed the firmware you linked and tested the results.> Unfortunately, the lowered SNR / dynamic range is unacceptable for me for> this modification.

Install the compatible 4' 2+ firmware which OwO linked (thanks!)> 7. Come here and explain the issue of not knowing where to find the> 5. Realize that I didn't know where to find the firmware to take> 4. Ohm out all componentry and traces to ensure this was done properly> 3. Modify the SAA2N by changing the two capacitors and one resistor> 2. Best to either be satisfied with the performance of your current V2 device, or purchase a V2Plus if you need the additional noise improvements.> And, just to explain and make sure we are all on the same page here,> 1.

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I'll certainly find out if this is rectified with a simple change of the bootloader.And let me also clarify *this is NOT a V2+ device*. I think that turning on averaging on one version and turning it off on another would be an unfair comparison, and also pointless in that it doubles the time it takes for a sweep back to V2 speed I think the point of the plus version is increasing the sweep speed while not degrading any other performance whatsoever.I did not realize that the bootloader has to change - I'll update that and compare as well.Regardless, it is apparent that changing between the V2 firmware and the V2+ firmware with the hardware modification brings me much worse SNR and dynamic range on this modified SAA2N, which is exactly the point of my first post. I'll 'de-mod' the VNA and post those results too. Just understand that using, driving, and interpreting results> from a VNA is part of my day job that I've had for the past 32 years.Indeed, I get where you're coming from on that and agree - I should have taken some pre-mod measurements as well. Take measurements and snap a picture of them> If there is a better methodology someone might have in mind, I'm all> ears. Install the 4' v.2 firmware I had before (the 'V2.74' from> 10.

Its not only the scan speed that isIf after the v2 upgrade and using the avg x2 shows lower noise. Use x2 avg on the v2plus toCompare it with a genuine v2. Perhaps someone with a genuine V2+ would be so kind as to make some similar measurements and post those results.I can only repeat what gabriel told me.

Then modify one of my v2 to aV2plus and then we have 3 different evolution stages to compareI will post my results. Perhaps someone with a> genuine V2+ would be so kind as to make some similar measurements andIn a few days i will get a v2plus4. But you made only half of the modding and you> I'm sure the actual V2+ performs great. I'll certainly find out if this is rectified> with a simple change of the bootloader.> And let me also clarify *this is NOT a V2+ device*.It is. I think that turning on averaging on one> version and turning it off on another would be an unfair comparison,> and also pointless in that it doubles the time it takes for a sweep> back to V2 speed I think the point of the plus version is increasing> the sweep speed while not degrading any other performance whatsoever.> I did not realize that the bootloader has to change - I'll update that> Regardless, it is apparent that changing between the V2 firmware and> the V2+ firmware with the hardware modification brings me much worse> SNR and dynamic range on this modified SAA2N, which is exactly the> point of my first post. I'll 'de-mod' the VNA> and post those results too.

I did buy a nonworking Iphone 3 where the battery had swollen. The flat batteries are in every phone, Ipad and tablet and fortunately they seem to rarely give trouble. Have you done a sweep up to 3ghz, or 3.8ghz yet, as the higher frequencies are where the noise floor gets worse and an improvement especially at the top end would be worth doing the mods for.I am a bit alarmed about the battery fire though. However did you do the 50k to 900meg scan before any mods?The noise floors on my unmodified early V2 up to 900meg is about the same as yours, but on MattвЂ™s V2N a tiny bit better than yours. Sometimes this forum does funny things.It looks promising, especially as the points per sec are doubled.

The moment it happened I took it straight outside and left it there in the garden (middle of the path) till the next day where it could no further harm.The other two V2's I have are in their metal boxes which I like very much, it makes them very much safer if ever their batteries did the same, even if the metal cases do reduce the performance slightly I'd rather them now be safe to leave about on their own than to set something else nearby alight. They are VERY sensitive to beingThat's an ok constraint in manufacturing phones or computers whereYou've got a well defined assembly line that can handle all theLess so if the battery is shipped in a padded envelope with bubble wrap.> source ones we know are of high quality then the problem could be largely> avoided, without resorting to bolting on 18650s instead.The VNA that the battery turned into a firework, the flame was like a small jet out the one side of the battery (so didn't harm the PCB), short lived but fast and furious, masses of smoke.The VNA was not cased, it came like that, so has no physical protection from the outside world, and so is very easy to nick or pin prick the battery in all sorts of ways. - mind youA 'low quality' retailer/shipper is really about handling.Pouch batteries are inherently sensitive to mistreatment (whereMistreatment is actually pretty mild) - Since the Robosimian fire in theLab at JPL, we have to have all kinds of special permission andPrecautions to even order them. Replacement Iphone 4 and 5 batteries are not too expensive and I was thinking they would fit in the V2 nsnos.On 11/7/20 3:25 PM, Peter KA6Z via groups.io wrote:> Hi Dragan, so I wonder how else the fire could happen, since usually the> only way available to charge these batteries is USB? I suppose some of> these flat batteries are just of poor quality and if we could reliably> source ones we know are of high quality then the problem could be> largely avoided, without resorting to bolting on 18650s instead.It's not so much a quality, as much as it's a handling thing.

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