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TNX 72/73 DR TIMOTHY-ALLEN ALBERTSON KD?OIA/(ex KG6IRH) FT817@...> wrote:

LEDs are semi-conductors and can produce noise, like a noise generator.? Without proper bypassing and such, they can be quite the noise generators like any diode.? I suspect in your case, there may

I glean from what has been said is that an LED light supplied by a 5v power cord supplied by a 12v battery should not cause much RFI. If I am incorrect, please disabuse me of my error. 72/73 DR

LEDs them selves do not produce RFi. The culprit is the power circuit in the LED housing that converts the AC to DC. Practically ALL new radios are lit with LEDs. If they produced RFi, they would not

Yes! LED’s can be a huge source of rfi. Wayne N4eyz

Big offenders I have found across our bands are: Ccfl bulbs LED lamps Static Air Purifiers (furnace or portable) Wall Chargers **** Cheap Radios Garry W9WHF

Would LEDs cause this? 72/73 DR TIMOTHY-ALLEN ALBERTSON KD?OIA/(ex KG6IRH) <FT817@...> wrote:

My suggestion: switch off every electrical appliance in your appartement. Switch off every fuse so that there is no electrical power in your appartement. With your FT-817 you are still able to

Could be a bad wall wart psu

Randy, High noise across the bands is unusual unless there is something causing widespread hash. Often these come from neon signs or plasma TVs both not often found in apartments these days. Loop

[image: IMG-20190623-WA0012.jpg] The photo of my magnetic loop antenna that I use in the window of the 11th floor has 12 floors. Works well. Pu2olt oliveira Oliveira PY2-255SWL Call Sign PU2OLT RX

Friend I live in 11th floor apartment too and I have a Yaesu FT817 and FT897, both I use a Magnetic Loop antenna. I get good contacts near the window. See the antenna that I use

You can solve half the problem (the receiving half) by using one of the online receivers at websdr.org. I am currently listening to field day traffic using the Northern Utah WebSDR #2. A good

Concur!? Apartment operation sucks.? The ultimate solution is to move. Some relief might be had.? Run your radio on battery power and pull your main breaker.? If your noise level is

I hear some have success with a magnetic loop antenna. MFJ has one or you can build. Turn it to null the noise may help. Apartments are a soup of rfi generators. I suspect that there is a way to make

My correct email Is ka4nma at arrl.net.

Thanks for the info. Any others?

I live in an no outside antenna apartment. I have a loop near the ceiling. I have s8+ noise on my ft897d. Any suggestions? 75m-6m Randy ka4nma

Inrad is still in business but they have a limited supply of the out of production mechanical filters. Check their listing on the website. Travis K5HTB