[TowerTalk] FA-VA5 question

[Michael Tope]

That's good to know. I would consider not being able to save stuff a 
major shortcoming. If you want to make sure your beam is working in a 
rough go/no-go kind of way (like in a field day scenario), it's not a 
problem, but I like to have the capability to save plots without having 
to drag around a computer.

Yeah, you had to be careful to make sure you shorted out the feedline 
first before connecting the MFJ-269. I found that out the hard way. It's 
probably a good habit to keep, as I am sure most of these small 
analyzers are at least somewhat ESD sensitive.

73, Mike W4EF............

On 11/6/2021 7:46 AM, Lux, Jim wrote:
> On 11/6/21 7:35 AM, Michael Tope wrote:
>> I just watched a video by W0QE from 2019 that indicated that the 
>> NanoVNA doesn't allow you to save data to memory while using the unit 
>> standalone. Do you know if that limitation has been remedied in any 
>> of the new incarnations?
>>
>> 73, Mike W4EF.............. 
>
>
> yes. some of the newer versions have an SD card. Some of the older 
> ones have the solder pads for the SD card holder, but no actual SD 
> card socket. Ditto serial port.  The NanoVNA is the epitome of "price 
> sensitive" so there's no parts on there that don't need to be there.
>
> The NanoVNA2, for instance, could stand to have some ESD protection 
> diodes on it. Some reports from people reporting symptoms that look 
> like zapped components.  The original NanoVNA has resistive 
> terminations on both ports, so, should be pretty ESD resistant.  I 
> wouldn't hook it up to a feedline that is actively sparking from the 
> charging of blowing dust or snow, of course.
>
> Of course, the NanoVNA has TDR built in, so you don't need to save it 
> somewhere else.
>