Currently getting back into ham radio and re-wiring my station. I would like to eliminate as many spurious signals as possible. Does it make sense to put the red and black zip cord used for DC power
Bob, Thanks for the info. I did read K9YC documents which I found quite informative but the question on how many turns really was not specified. I was hope someone could point to a study that might r
I have not seen any RFI from the 60 watt LED lights made by CREE either. Not sure if they have a flood light version or if that would make a difference. Chuck K9LC 73, George VE3YV / K8HI ___________
Fair-Rite has introduced a new low frequency material (#75), I was wondering if someone could comment if this new material would be better that #31 for EMI suppression. According to the Fair-rite web
I would not recommend starting with the FCC or the ARRL. I would gather as much evidence and notes that you can and document the issue. the documentation should including the times of day the interfe
I am sorry but there are no BUTS here. Jim Brown is 100% correct in his statement. Fixing issues out in the field requires considerable resources spent in personnel, travel expenses, and labor to fix
Mouser.com has it listed for $18.09 in single unit quanities in case any one is interested. Chuck K9LC Sent from my Verizon Wireless 4G LTE smartphone KY8D asked me about a new, larger #31 toroid t
Jim, Could you clarify if you mean 5 turns through each core as in separate chokes in series. Or 5 turns through both cores as in 1 choke with two cores? Or is there a difference? It doesn't seem lik
Guys, I have had CREE LED bulbs in my garage door opener for about a year now. I have no problems with my locks, or starting my 2015 Jeep Grand Cherokee. The only way you will know if you have a prob
Torid cores with multiple turn are more effective. K9YC has written a very good paper about this. It can be found on his website. The file is publications/rfi-ham. Chuck Gooden - K9LC I suspect th
Hope some one can assist me with this RFI problem. We have a kitchen faucet made by Delta (Model 9192T). The faucet will turn on when you touch it and turn off when you touch it again. It actually
Steve,Well that is news that I did not want to hear, but I was afraid I would. By chance did you contact Delta about the issue? If so can you send me the referance number on the call? Would like
If I am recalling correctly, the Fcc does not include any specifications for radiated emissions below 30 mhz and leave it to "well engineering practice." But that is never defined. Chuck Gooden - K9
Have you seen this? https://www.sv1afn.com/rfattenuator.html Chuck - K9LC I could not agree with you more with regards to an attenuator. My biggest problem was overload. I am in the process of buil
Use #31 ferrite snap-ons. I am not sure I would trust Homeland Security for electronics issues, security yes electronics no! What is the manufacture and model of the keyboard? My IBM keyboard final
What brand of wireless thermostat are you using?Chuck Gooden - K9LC Any opinions about how to handle a wireless thermostat? Ive used the American standard rfi kits on all three units. All have variab
Make sure you check the cost of the fixture with the bulbs vs the bulbs alone. When I had a similar idea I found the fixture with the bulbs costed as much as the bulbs alone. Chuck K9LC I have a num
I am currently experiencing RFI issues on 40 meters and below. Some, but not all, of these issues are due to the Power over ethernet (POE) switches that I am using. I have two POE switches and 2 Wir
I received 25 #31 Fair-Rite snapons from digikey and was charged 6.65 tariff on an order of ~$65 plus tax and shipping to make ~$83 total order.Chuck K9LC -- Original message --From: Jim Brown <jim@a
I received 25 #31 Fair-Rite snapons from digikey and was charged 6.65 tariff on an order of ~$65 plus tax and shipping to make ~$83 total order.Chuck K9LC -- Original message --From: Jim Brown <jim@a