If I read between the lines and, in summary, the first contact should be with the ARRL. They (still) have the capability of working on a technical basis with the amateurs and, most importantly, still
If I read between the lines and, in summary, the first contact should be with the ARRL. They (still) have the capability of working on a technical basis with the amateurs and, most importantly, still
This sounds like something the ARRL and W1VLF should be paid for!!! In my small EMC/RFI consulting business, I sure wouldn't be doing this for free!!!!!!! Some limited up-front consulting is in order
How much current does your RV draw? I'm thinking of a large line filter which you could build yourself and save a few $$. A good LISN (Line Isolation Network) used in EMC testing might also do a numb
Here is what I know will do the job: https://www.te.com/usa-en/product-CAT-C8114-F299B.html?q=&n=42254&type=products&samples=N&inStoreWithoutPL=false&instock=N The general listing for all the filters
I should not have been so optimistic!!! On originally checking and quickly checking for RFI after installation, it seemed OK. However, today while addressing a problem from a close-by contesting stat
Thanks for the suggestion. I was so, well,......, angry....... I couldn't think constructively! Yes, a few turns through the appropriate core might do the trick. Again, thanks for the suggestion. Tom
Removal of the components that allow SMPS's to pass FCC, if they are tested at all from China, has become a common practice. It's a juicy given for the contract manufacturers! This practice has been
I wish I could include images with the group.io groups, but can't. Using the HP 8753C, I selected the large ferrite toroid which gave the best performance at 160-meters and above using a single turn
Ed, I'm well aware of the FCC exemptions for home appliances. That's why I took it on myself to solve the problem with the well over-designed CM choke. Just wish we could post pictures on this site.
Mac, I'd be a little embarrassed to write an article on something so simple, but that's QST and ARRL these days. However, I certainly will take your suggestion under consideration. I've been licensed
You are so correct, Mac!!! It certainly is a good project for the newbie - simple and certainly would give a sense of accomplishment which is so important in home brewing (which I still do in amateur
When there is a radiated or conducted problem with a piece of equipment, there are two VERY GENERAL methods to reduce problematic emissions: A) Reduce the level of emission at the source (source supp
I have experienced and measured what looks just like your SA captures from an electronic transformer - long war story. Mix that with the Plasma TV we used to have, and you've got a good match!! Dave
Yes, they are!! And absolutely no attention paid to EMC!! Yet another, "With Love, from China". I actually use one in a course I occasionally give. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Wor
Karin, it sounds like you know what to do and have the equipment to measure results. Just a caution from EMC/RFI experience: Many active, SMPS's and converters, do not tolerate complex loads or sourc
Spend a tad more and purchase something outstanding, not only the NB, but the rest of the radio. Take a serious look at the Icom 7300. The NB just works! Recently, I've seen them go used for as low a
55015 addresses specifically lighting. 55032 replaces several older standards which include 55022 which specifically addresses ITE (information technology equipment as in PC, laptops, and......). Cla
Yes, Dan: "Standards without enforcement is rubbish". FCC really does not care anymore as the organization consists of just a bunch of lawyers who wouldn't know RFI/EMC from toilet paper. OET has bee
When the dickens is the FCC going to bite the bullett and regulate the solar power industry????? Hopefully not yet another ignored Part 15................ Dave - WØLEV -- *Dave - WØLEV* *Just Let Dar