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Thomas, this is more a question to the designer of VNWA about his implementation (DG8SAQ). Please note that sdr-kits provides a download link (on the small paper of the kit) to a calibration value

I've searched the messages, and could not find an answer to my question, so here goes:? In the VNWA program, under settings, Calibration Kit, the dialogue box for the Simple SOLT Model Settings, has

Thanks for the response Rick, Apparently that driver isn't compatible with Win 11 on my computer as it never showed a driver to download or install. I ended up deleting the CP210x Windows universal

You can go to properties on the "other device" and point it at the downloaded driver? Also, Some drivers need to be installed before plugging in a device. (so that windows will properly recognise a

Greetings to All, I am new to the group and to the FA-VA5. I am having a problem trying to get my FA-VA5 to work with the VNWA software. I have downloaded the software for the VNWA and it seems to

Frank, yes, it is possible. At fr, the IF filter will change it's impedance significantly. However, most IF filters are designed for other system impedances than the 'normal' 50 Ohms, which makes SWR

Thank you so much Johan I apologize for being so late responding back to you. I never received a message from groups.io telling me that you responded back to my question. If you do not mind, I have

I knew when I made my suggestion regarding changing to a UHF connector that I'd get push back from some folks.? I also tried to qualify my use as being HF oriented as well as a lot of use in the

HF focus This is a very good point. There is an ongoing race for higher frequencies. The more GHz the better. But covering multiple GHz conflicts with low cost. The question arrives, if this really

One item of the VA5 that really needs improvement is the On/Off switch. The one in all the units I have bought for myself or for other people has proved to be 'touchy' at best, and intermittent as

Frank, it is easy: 1. Start FA-VA5 2. Press and hold the left button (about 2 seconds) until the main menu "Operating Mode" is shown 3. Press middle button [Dwn] quickly three times to move down

Newbie just starting out - I heard that the Fa-Va5 can be used like a signal generator ? I looked at the operation manual and it looks like it has a very steep learning curve. Can anyone out there

I guess it's time to wade in.? I've been making transmission line measurements since the days when I used a waveguide reflectometer and "calibrated" a scope screen with a grease pencil. Thirty years

Dear all, thanks for your valuale input. Let me try to bring this together and evaluate what is doable and feasable. Thanks again for taking the time. If there are more ideas or comments, don't

Hi Charlie, thanks for your input. Some comments: 50 Ohm/ 75 Ohm There is an option in the setup to change to 75 Ohm system impedance. Of course, this will not change the hardware of the bridge, but

PARTS AND COSTS No comments PROCESSOR Could a board like the Raspberry PI be co-opted. The ones I use easily handle a full Linux OS and do not seem to be burdened by large applications. DISPLAY I am

Hi Michael: A few comments from this side of the ocean.? Let me start by explaining my use of the fa-va5.? I am primarily an HF guy (1-30MHz).? Second, I do a lot of work with transmission lines

Hi Michael, I'm a fan of the FA-VA5! I'd love to have an excuse to order a FA-VA6! I don't love the user interface but have come to understand it well enough to be effective. It almost seems that the

Just a note on batteries. For my test equipment and flashlights that use AAA an AA batteries I now use Lithium cells that have high capacity an long shelf life. I've never had an issue with

Hello Geert Jan, thanks for your valuable reply and all the information. May I comment some of the topics: PROCESSOR The dsPIC was choosen due to historic experience. Today, STM32 are valid