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I am also almost certain of a bad battery. I would definitely test it with a 6V (bicycle) lamp or something similar. You can also temporarily connect ANY 3.7V Li-ion battery (from GSM, DECT

Just to add to the Chaos... I was paying around with the time and date as I am in a different time zone than what was already set on my VNAh4. The only place that I can see it's clock is under the

component side to the cheek to determine what's running warm. +++

Hello Dave, I purchased an AMES Thermal Camera at Harbor Freight. Refer to photos. There are also thermal cameras advertised at AliExpress in China. These are sandwiched types, no case, but are still

I don’t often suggest AliExpress, but you can get cheap ones from about $50 that will do the job you need one for. Some of those will directly connect to your phone (most are for android but some

Seeing you mention “thermal camera” does anyone else have recommendations for such a device. I see low cost gun type at the big box stores and have heard of more expensive units that show a

As others have said ideal is a thermal camera Next best is measuring the output VDD voltage in failed-mode across the suspect components (circuit diagram) looking for the lowest voltage across their

One more question, how do I set my tdr linear trace to be flat?

Thank you very much?

Use NanoVNA to measure coax length : https://www.youtube.com/watch?app=desktop&v=9thbTC8-JtA Does this help ? N9VPV

Hallo, I need help, I only need this instrument to measure the length of the cable and where the cable is open. If possible, I would measure rg6 and rg11 75ohm, the longest length up to 10-30m I

Authorized stores are listed at nanovna.com <sim31_team@...> wrote:

Hi Dragan Thanks for pointing me to an original brand via amazon.de or ebay.de , may be directly to the constructor site .. 73s Nizar

Why would you buy a clone when you can get the original for less? <sim31_team@...> wrote:

Hi Karl Hi All Pse what do you think about this NanoVna-H4 V4.3 provider from ebay.de (Germany) : SeeSii brand:

Michael, thanks for the info regarding the RigExpert app AntScope2...very interesting. 73 Steve G4EDG

Some have not read the files section. Replacing is possible if the flat cable connector has the same PIN configuration. Another type with more pins, recuire a study of the right connections and

After replacement, is the screenshot function normal? The screenshot I replaced with a 3.5 inch is not normal

Alas we are just systems engineers now… just purchase the correct black box, write some code and rush it into production before it becomes obsolete! I’m writing and listening to my diy hi fi. All

Another very interesting book by Bruce Hunt: Imperial Science. Should be required reading for EE students. Land line telegraph was interesting but things really became interesting when the