The embedded chips in credit cards and ExxonMobil's "Speedpass" use a technology called Near Field Communications (NFC) at 13.56 MHz, yes, right below 20m. This is an international allocation. This i
Great question! The wife is planning same for us in the bath remodel as well as a towel warmer, shish - what did we do before technology? Interested in anyone's experience - whether your unit or one
I've always used the analogy it is like trying to see a candle flickering at a mile away with one eye while the other has a flashlight pointed at it from a few inches away. You have to add a very goo
I recently got an invite to a webinar either an Anritsu or Tektronics "T-hunting" with a handheld specan. It came to my work email and I'm out of the office this week. Seems as though the webinar is
Could explain why I hear it 24/7 if it is ground wave. Not all that strong here at my place in Atlanta. Doc, it sounds like it may be close by to you!! tnx Mike ______________________________________
The expectation is that all current flows from Hot to Neutral and NONE flows through Ground, or the Green wire. GFCI's work on the principle of no current in the Ground/Green wire and should trip on
Or required by city ordinance(s). Not uncommon for a group to demand safety and security, then in a few years complain about the bright lights messing up the night sky. tnx Mike _____________________
What frequency(ies) are these wireless secirity systems operating in - 434, 390, 902, 2400 MHz? And how are the sensors powered, via coin cells? Since I operate 440 and 900 repeaters at my house as w
And along those lines - since you said you turned power off to the house - do you or a neighbor have any of the solar accent LED lighting??? Or any other solar powered equipment. tnx Mike ___________
The wife wants one of the electronic faucets in the new house. We had a touch on / touch off at the old house (a Brizo Venuto series model 64070LF-PC). It responded to my 160m CW as if someone had a
And some (most?) of the vehicle to USB "chargers" exhibit horrendous noise up into the VHF spectrum. tnx Mike / W5JR _______________________________________________ RFI mailing list RFI@contesting.co
I agree with Jim to watch out for the switcher power supplies. My own experience with a Comcast unit replaced over the summer was noticed to be quite ugly on 160m later in the fall when my focus turn
Thanks Dale. In this case, we moved and gave them their unit back. I'm likely to get new products from them in a month or so when we move into the new house although I really am not looking forward t
Hi, Dale and others. Many of these new industrial high efficiency lighting systems are generating significant broadband noises from near 650 MHz to close to 900 MHz. They fall under Part 18. They imp
Hi, Jeff. As I stated, my area is related to mobile sites. I do not reside in an area that is served by U-verse and subsequently have no personal experience in dealing with any issues related to the
My experience is that is the pattern of many battery chargers especially when the battery is fully charged but still connected. tnx Mike / W5JR _______________________________________________ RFI mai
I wonder if Honeywell's similar product has similar issues? tnx Mike / W5JR _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/lis
Traditional cable TV systems use the same spectrum above 470 MHz that over the air broadcast uses. And they are still using the spectrum between channels 52 and 69 that has been repurposed for Land M
This is the great "TV White Spaces" project. Once the channels above 21 are repurposed for more wireless broadband (known as "600 MHz" despite including a large chunk of 500 MHz) save for channel 37
I have a wired First Alert smoke and carbon monoxide unit (SC9120B) in the stair well outside the ham shack. At 50w and above on just about all bands 160-10, it goes off. The other non First Alert un