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u/BarnardWellesley

r/ebike r/RTLSDR r/watercooling r/embedded r/OculusQuest r/buildapcsales r/Quest3 r/rfelectronics r/rfengineering r/FPGA r/snapdragon r/ElectricalEngineering r/sdr
▲ 7 r/ElectricalEngineering

If my SAR system falls under USML XI(a)(3)(ii), what part of it is restricted from publication? (<0.3m resolution)

So my current SAR system is able to achieve better than 0.3m azimuth resolution using the SAR code written by HForsten, which is open source on github. Without this code, I am not able to reach 0.3m azimuth resolution. Thus without this code, my RADAR is completely uncontrolled.

Thus I do not understand what it means that I now fall under ITAR, I built this from commercial commodity parts that are all EAR99. Is the software controlled or the RADAR itself or both? How do I navigate this?

reddit.com
u/BarnardWellesley — 3 days ago
▲ 19 r/rfelectronics

If my SAR system falls under USML XI(a)(3)(ii), what part of it is restricted from publication? (<0.3m resolution)

So my current SAR system is able to achieve better than 0.3m azimuth resolution using the SAR code written by HForsten, which is open source on github. Without this code, I am not able to reach 0.3m azimuth resolution. Thus without this code, my RADAR is completely uncontrolled.

Thus I do not understand what it means that I now fall under ITAR, I built this from commercial commodity parts that are all EAR99. Is the software controlled or the RADAR itself or both? How do I navigate this?

reddit.com
u/BarnardWellesley — 4 days ago
▲ 3 r/rfengineering

Is this a folded dipole or a loop or something else? It forms a loop from the front to back using a via. Creates a kind of loop

u/BarnardWellesley — 26 days ago
▲ 2 r/rfelectronics

Is this a folded dipole or a loop or something else? It forms a loop from the front to back using a via. Creates a kind of loop

u/BarnardWellesley — 26 days ago
▲ 59 r/FPGA+1 crossposts

Kria AI released... Replacing high compute on website... This is just a GPU?

u/BarnardWellesley — 28 days ago
▲ 5 r/sdr+1 crossposts

What are those 3 signals on the left? I think right is wifi. LO 2.4GHz.

u/BarnardWellesley — 28 days ago
▲ 4 r/rfelectronics

How far can the LDO be from a PLL/VCO Loop filter?

I am designing a RADAR board, and looking at the eval boards, I see that they take in sources from bench supplies, and those are usually meters away electrically. Is that ok? I know that the common wisdom is to place the LDOs as close to the ICs and capacitor networks as possible.

reddit.com
u/BarnardWellesley — 1 month ago
▲ 1 r/ebike

NYC bike shop recommendations for a modified Yamaha e-MTB / upright conversion? Not judgemental.

I have a heavily modified Yamaha YDX Moro e-MTB. I changed the cockpit to make it much more upright: new risers, stem, handlebars, lights, mirror, and related wiring/accessories. I’d like the wiring and etc to be professionally done and the brake line to be extended.
I’m mainly trying to avoid shops that are dismissive or will ridicule this bike. Thanks.

u/BarnardWellesley — 2 months ago
▲ 31 r/rfelectronics

Nothing outperforms this high q piece of shit aperture controlled patch after many days of tuning. How can I introduce a second pole? I need 800 MHz bandwidth. I tuned the aperture and patch and feed line stub.

u/BarnardWellesley — 3 months ago
▲ 22 r/snapdragon

If you told me a year ago that I would be running RF simulations on HFSS faster than my desktop on a snapdragon, I wouldn't have believed you.

u/BarnardWellesley — 3 months ago