Jim, Frank and others, I have read with interest the thread on RF Flooding with interest as I have had some of the symptoms described: "rise up floor noise level about 60 khz on each side from main h
I've been noticing this RFI and I'm wondering if anyone can identify it based on the attached video. It is the pattern in the middle of both waterfalls. There is also something similar looking but re
On 40m when I transmit at full power my upstream cable modem data connection experiences packet loss and slows down. I've added substantial amounts of ferrite to the CATV coax, ethernet cable and pow
Hello, I'm noticing that the second harmonic of my transmitted signal is accompanied by all sorts of broadband noise. I am in the process of ruling out the equipment inside the shack as a cause of th
I'll add a bit more information. Thanks much for the suggestions so far: - The rig is a Flex 6600 SDR transmitting 1 Watt. There is a Morgan Manufacturing 40m bandpass filter (I measured it as having
Thanks for the tips on not destroying the spectrum analyzer, Lee! And thanks to everyone. I will be putting together an RDF setup for localizing noise but I wanted to share the spectrum plot of the T
Hello -- I'm not sure how much background to offer about my shack, so I'll skip to the specific question I have and then below that I will describe in a bit more detail the steps I've been using to f
Dave, One quick question: *Any modern solid state transmitter will produce broadband noise. The broadband noise is generally worse at less than full output power. I'm guessings that's where your BB n
Thanks much for the tips, Jim. Do you know if the wall warts can cause mixing when they are not plugged into the wall or if the circuit breaker is turned off? In my testing the other day I did not se
Jim, Interesting. I just did that test (kx2 tx, mains power off, portable battery powered RX) and the mixing products are still there. I realize based on your comment that I have a large number of de