Note that the new QRZ policy specifically allows remarks regarding the FCC (and their inaction when it comes to Part 15, in general). Read the last paragraph on my QRZ page. It's all from experience
Thank you, Tim. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/
that is a good tool for coronal and arc discharges. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________________ RFI mailing list RFI@contesting.com http://li
You may have to totally enclose the electronics with aluminum foil. I used one of these a couple of months ago and had to do a major shielding job to get rid of the hum which overwhelmed the operatio
Absolutely! Arcs and coronal discharge produce lots of UV. A coronal discharge is pretty cold and does not produce much IR at all. You probably won't even detect a coronal discharge in the IR. An arc
Ed, your points are well taken. However, consider the required infrastructure expansion in the power grid that full implementation of the EV is highly likely to precipitate. The EV movement is a lose
Does anyone in this group have an installed Culligan whole house reverse osmosis (RO) system? If so, what is the RFI signature? Hopefully none..... The rep claimed everything runs on DC off 120 vrms.
These days it is controlled by a microprocessors with lots of sensors on the input and output of the water. It's WAY beyond just filters these days. The digital revolution has impacted about everythi
Excellent!!! Now we have intelligent people putting real numbers to the issue. Keep on keeping on........ Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________
Instead of the 'rifle' scope, I'd suggest something a bit more capable with a larger aperture. I have the Celestron Ultima 65 used for this purpose and many others. The 65 mm objective is excellent,
Just my 2 cents: blue, not white, 1/2-inch long or greater, and about the diameter of your little finger or larger. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _____________________________
Phillips Lab on KAFB / Albuquerque: 1-foot long blue, diameter of my little finger, 20 kV *direct current* arc. Something to seriously respect!!! But we had fun playing on Uncle's provisions....... D
Oh, we were playing with one of the DC supply that powered one of our high power pulsed microwave 'machines'. We had fun with Uncle's toys on more than one occasion. But lock the doors if we spilled
In general, solar power is an open license for massive amounts of RFI. As a ham and entertaining another hobby of amateur radio astronomy, I just say no. A clean installation can be had, but it may t
Beware of the optimizers. Most are wicked wrt to RFI. Dave - W0LEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________________ RFI mailing list RFI@contesting.com http://
31 material really shines at the lower frequencies of the HF spectrum. 43 material is far better at the high end. Dave - W0LEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________
It is a very standard "tool" in the EMC/EMI/RFI discipline in reducing radiated emissions from a compromised enclosure and in decreasing susceptibility to external RF fields!! Dave - W0LEV -- *Dave -
Yes, it is. Compare the thickness against the skin depth vs. frequency. It is plenty thick enough to be effective in the BC band. Dave - W0LEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________
The Tiny SA is typical of even expensive spectrum analyzers of the past, even HP. They came without a built-in preamp and the noise figure was typically 18 to 22 dB. They needed a preamp, external. E
My Milwauki cordless drill charger also produces lots of RFI on HF. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* _______________________________________________ RFI mailing list RFI@contesti