开云体育

https://www.microwaves101.com/encyclopedias/wilkinson-power-splitters You're missing the resistor. 73 Andy, G4KNO. wrote:

The TV splitters to connect two TV's to the same antenna are very cheap and work just fine at that frequency.? ? They are a simple transformer, they have no impedance of their own.? So splitting 75

Hello, I intend to use the same antenna for two RX-radios. I will lose 3 dB, but for the sake of the radios RX-input I intended to present each with roughly 50 ohms. The frequency is about 90 MHz (not

On 5/3/22 8:40 AM, Rich NE1EE wrote: > On 2022-05-03 06:45:-0700, you wrote: >> This kind of gets to a point - there *are* people who know the answers on this list, but in general, they also have

To a certain extent, though, a user manual is tutorial in nature, if you're giving step by step procedures for how to execute some measurement.? Perhaps not to explain the background, but surely we

On Tue, May 3, 2022 at 06:41 PM, Rich NE1EE wrote: > > > > > it's also possible to be knowledgeable for writing the code, but not such > > a great explainer. > > This is a good point. But for me, it's

This gets to the heart of the matter. Good for them. So do I. All I set out to do is write a user m

I'm not. I'm writing a user manual for the nVNA. I think we could all benefit from tutorials of some sort, but we all have different interests. To me, that means that many people would prepare

The VNA has no way to know the relationship between physical length and electrical length. So you have to enter propagation velocity.? In a tutorial, since it has come up, one might have an

On 5/3/22 6:26 AM, Rich NE1EE wrote: > On Wed, Dec 1, 2021 at 01:27 AM, DiSlord wrote: >> CABLE - this cable measure util, need calibrate nanoVNA and connect cable >> (there should be nothing on the

1.2.5.3 CABLE S11 Choose a frequency range such that the cable length is ~1/4 of the wavelength in the middle of the range. This feature uses velocity of propagation. It automatically measures the

The first suggests to me that each of these measurements needs its own threads, here or elsewhere. And that is for each used who wants to do those specific types of measurements. The second, however,

The attached diagram shows the cascade (or not) of calibrations when using the NanoVNA with internal cal (or not) and a PC app cal (or not).

Someone should make add on cards with those protection diodes. I wont solder them myself, 0603 are hard enough and sometimes even a 1206 between two SMA connector PCB pins.

Hello, Making a model reproducing the 45MHZ pass filter of the ubitx (but with variables capacitors) and connecting at each end a toroid transformer I managed to improve the tracing of my filter. Or a

The following files and folders have been deleted from the Files area of the [email protected] group. * /menu maps/nVNA-H v3.6_MS firmware 1.1.01 menu map 0101 AN14.zip *By:* Rich NE1EE

What a gold mine! Thanks, larry

This is why I generally avoid the use of lower case "L" unless the meaning is clear, or I can use a font that makes s clear distinction. Simliar reasoning applies to the letter "O". In this case, I

Good point. I was not expecting a lower case letter here, so I interpreted that as a 1 on both the -H and the -H4. Even in email, I can't always tell, depending on how the font is shown. In this case,

I see only Rl = 50 (not 1 and not j) You must read how made XTAL measures and another: /g/nanovna-users/message/25800 /g/nanovna-users/message/25801