Radio Interference

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Hiya,

Can products like an Retekess TR501 1W 6W FM Transmitter Long Range Mini Radio Stereo Broadcast Station PLL LCD Display AUX Input with Antenna for Factory Church (Silver) interfere with the FM or AM frequencies and overwhelm an digital radio? No matter what channel I may be on?? I believe this could be happening to my digital radio.

https://www.amazon.com/Retekess-Transmitter-Broadcast-Station-Display/dp/B01DXMZ560
 
What do you mean by a digital radio? An HD Radio receiver? Car radio, portable radio or home tuner?

I have some experience with using normal FM receivers about 10 meters from an FM broadcasting antenna transmitting 20 W of power. Using a Sony ST-SB920 FM tuner, I could still receive strong stations to some extent, but always with clearly audible interference in the background. Car radios are usually designed for very good large-signal behavior, so they should work better in the vicinity of the transmitter than FM tuners or portable receivers.

By the way, that 20 W station was covering a city of 32 km^2 using a two-layer dipole antenna at 34 meters above ground. With 6 W and a similar antenna and height, you should be able to cover about half that area.
 
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Just your standard portable digital radio - so I guess it's a yes lol. Does anyone know what else simple like that could do this?

HD Radio works on the same band as FM and portable radios usually have poor large-signal performance and hardly any preselection, so probably your radio reduces its gain a lot when that FM transmitter is transmitting to be able to cope with the strong interfering signal. That reduced gain causes it to become far less sensitive than it would normally be.
 
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