Hi I simulated your ground plane using "CENOS Radio Frequency" simulation tool. I used the same dimensions but a solid 45 degree ground plane cone, I used copper as the material with a 1.5mm radiator. It came back close to your results. Resonant at 800MHz (instead of 834 for your first try) with a RL of better than -25dB (VSWR 1.11) and a gain of 2.2dBi, impedance of 55.9 ohms. Changing the radial angle to 43 degrees brought the impedance down to 52 ohms. Cheers.
Hey ingmar, thanx for feedback. Ya iv been using these antennas for any freq as my go to first try design. For what they are they are hard to beat. Value for money and complexity.
@@EngineerMeThis Aha - I was assuming you were using a big HP VNA and not a handheld one. Keep up the interesting channel. I really enjoy watching your videos !
I see. I had an old HP bench VNA but it had to be tuned again. And needed to pay more to get it fixed then to just buy a pocket VNA.. works good enough for simple antenna design
This seems to be a RUclips playback issue. Couple of people have commented on different videos but lost are fine. I suspect it's music copyright sections where they deem it needed to block it and then loose all audio as result
![[4K] Watch SpaceX Catch A Starship Rocket From Space!!! #IFT5](http://i.ytimg.com/vi/pIKI7y3DTXk/mqdefault.jpg)
Hi I simulated your ground plane using "CENOS Radio Frequency" simulation tool. I used the same dimensions but a solid 45 degree ground plane cone, I used copper as the material with a 1.5mm radiator.
It came back close to your results. Resonant at 800MHz (instead of 834 for your first try) with a RL of better than -25dB (VSWR 1.11) and a gain of 2.2dBi, impedance of 55.9 ohms. Changing the radial angle to 43 degrees brought the impedance down to 52 ohms. Cheers.
Hey ingmar, thanx for feedback. Ya iv been using these antennas for any freq as my go to first try design. For what they are they are hard to beat. Value for money and complexity.
Please could you give a little more info about what is inside the silver coloured box in your hand ? Did you say it was a balun ?
You Mean VNA? Vector Network Analyzer ( you can PocketVNA, TinyVNA or NanoVNA on Amazon. ) there are alot of options available depending what you need
@@EngineerMeThis Aha - I was assuming you were using a big HP VNA and not a handheld one. Keep up the interesting channel. I really enjoy watching your videos !
I see. I had an old HP bench VNA but it had to be tuned again. And needed to pay more to get it fixed then to just buy a pocket VNA.. works good enough for simple antenna design
The audio disappears at 4:26. I have tried youtube app and on different web browsers. Same everywhere. Weird
Large Portions of this video has no Audio.
This seems to be a RUclips playback issue. Couple of people have commented on different videos but lost are fine. I suspect it's music copyright sections where they deem it needed to block it and then loose all audio as result
@@EngineerMeThis 🤬 RUclips (KGB) .. I give them 👎👎👎👎👎 for messing with your video.
*promo sm*