开云体育

It is perhaps time to highlight once more that many so-called USB cables that *seem to suit* the FA-VA5 are actually "charge-only" cables, meaning they cannot be used for connecting the FA-VA5 to a

I have often wondered whether my FA-VA5 can accurately measure a UHF (70cm band) bandpass filter I made recently. Well, I tried it out today and the answer is: yes, it can. While a filter is clearly a

Hi, I just checked FA-VA4 with 0.40. It does not support 'scrolling' of frequency. I assume you mean frequency change in any sweep mode. The easier way to achieve band change is to move from sweep

Hi, As a recent-joiner of this list, may I start by asking a question that is perhaps a little bit out of scope. I have a FA-VA5 and I'm very happy with it. I recently bought a second-hand FA-VA4

Thank you Michael. I knew that would do it, but I was trying to avoid the recalibration, but it might be time for that anyway. Wonderful instrument. Regards,? Wes

Wes, selecting factory reset from the menu will delete the whole EEPROM content, including datasets. However, it also deletes master calibration. Therefore, a new master calibration should be the next

Is there a way to erase (empty) the dataset memory locations.? I know they can be overwritten but it can get confusing.

A cordial greeting to all. I am a new user of FA-VA5 and VNWA software. I have a problem: when I print (File/Print) a green band always appears as in the image below. - What does this band mean? - Is

Most welcome. Glad it worked out well.

Dieter, Thank you for the reply and information. I have finished measuring the coaxial cable RL for receive side of my H/V 2m array. RL * 0.5 makes the results much better and all looks good

Hi Peter, sorry for the delay. For measuring cable loss, you can use RL (return loss). You disconnect the cable at the antenna side and *leave the cable unterminated*. The RL you measure is then

Dieter,, Hi - my FA-VA5 kit working well after 3 years. In the past I have only used it for measuring SWR and it has been fine. I think that I now have problems with my coax feeds to my 4 * 9 2m

Dieter, Thank you for the information, I will try your suggestions. The FA-VA5 is perfect for use at the work bench. I will try it and see how it goes! 73' Matt - WA0V

Hi Matt Sounds good. Here is some advice regarding the measurement of traps. I have used this method successfully when I made a trapped dipole for 18 and 14 MHz. When measuring a trap, we have to

Dieter, Thank you, that was the conclusion that I came to as well. I'm making traps for the OZ1CX version of the W3DZZ 5-band

Hi Matt, It is advisable to measure the coil at its operational frequency of 7 MHz. We never get pure coils. First and foremost there is a winding capacitance does affect the effective inductance. If

Hi Dieter, When designing a coil for a 40m trap, would it be advisable to set the frequency to 7MHz? Or would it be better near 1MHz for instance? Thanks! 73' Matt -WA0V

Hi Johnny, thanks for your suggestion. Unfortunately the EEPROM in the FA-VA 5 is filled to 99 %. There is no space left for any new features. Also, there are no plans to issue a new firmware for the

I own the FA-VA5 from 4 years, this is my review and description: https://www.pianetaradio.it/blog/antenna-analyzer-fa-va5/

I would suggest to Michael DG5MK a new feature, if is possible to add a sweep generator function, with these parameters: - start/stop frequency - number of points - sweep time I think it's not too