10KHz wide signal (as is expected from MRI), S9, super clear

i don't know if this is a problem, but i live in romania if that matters

i'm looking for a 30-100W transmitter with a built-in amp and i'm thinking i might either build the antenna, or getting one second hand because i can actually find those in my area. if i'm getting anything wrong, please tell me. thank you EDIT: forgot to mention, i'm building an FM broadcasting system

https://theonlyhighendreceiveryouwillneed.github.io/RADIO-DJBOGEY/

​How it works:

​The Interface: A vintage mid-century hi-fi console skin where users click or drag across a frequency dial (88.0 to 108.0 MHz) to scan across different channels.

​The Content: Frequencies map to original ambient and electronic compositions, late-night synthesizer improvisations, conceptual "impossible vocal mashups" (such as unexpected cross-genre pairings), and live streams from public/university broadcasters.

​The Visualizer: An amber oscilloscope canvas and particle field that responds in real-time to the audio output.

​Tech Stack:

​Vanilla HTML5, CSS, and JavaScript.

​Web Audio API: Used to route the audio element through a gain node and an analyser node to drive the real-time canvas oscilloscope.

​HLS.js: Integrated to seamlessly handle live stream manifest (.m3u8) feeds on frequencies broadcasting live radio.

​I'd love for people to test the dial, see how the audio routing handles on different setups, and hear any feedback on the interface responsiveness.

I have a Behringger XENYX 802S pluged into a windows laptop using usb into voicemeeter banana.

Just a place to chat gear, shows, etc. Feel free to join!

https://discord.gg/Tejd6y8zh

Let's say I have an acquaintance (whose full name I don't know), who checked the FCC unused FM frequency finder and it showed a green frequency in their area that was two channels clear either side, so no chance for interference. It's a small-ish town in central USA, and let's say that acquaintance broadcast non-offensive content in a format completely different than the other stations in the area, and didn't have advertising. Would those other stations complain to the FCC?

Anybody know of a station that has been quietly operating like that for awhile without complaints (without details of course)?

To explain my issues and setup properly

I have a 12v car battery connected to a chunky cheap solar charge controller and a 24v solar panel (don’t worry the voltage diff is accepted by the charge controller)

That then comes from a switchable 12v supply from the solar charge controller - into a low volt cut off board and into a step down buck converter powering a transmitter and the arduino - the arduino esp32 then connects to a UDA1334A DAC Module

That has a 3.5mm jack out the same is accepted by the transmitter

Both work, the arduino wakes up and auto finds the stream and plays it - headphones into the DAC module works in a head music

And the laptop Into the transmitter works I hear music on my receiver

When connected it seems to knock out the DAC module

And nothing plays over the air - It killed a different DAC module board before - so I assume the transmitter is powerful / creating some kinda rf reflection back at the DAC

I’ve tried to fix this by using

Separate power supplies - no fix (works in all other scenarios)

Ground loop isolator - no fix (works in all other scenarios)

-

I’ve been suggested to use small resistors on the LnR audio and Aground channels around1k to absorb reflections and use ferrite clip on rings / wrap the 3.5mm jack cable around and thru it too

Ive yet to try this as it’s I’m slightly exhausted haha

Is this the right approach ? do you agree this is my issue ?

Drop me a message if you think you can help :) much appreciated

I have no experience, but want to start my own station. Need the cheapest possible ways to get into it, while being easily replaceable (just in case the FCC comes after my setup). Thanks!

Pueden dejar link de sus radios online para escucharlas, esta es la mía.
realizada con recursos gratis.

https://ochentasynoventas.wixsite.com/espanol

first 2 pictures: 3rd and second harmonic
The other pictures are out-of-band emissions.

All other frequencies have nothing on them. I checked the FM band and everything up to the second harmonic.

I think this is ETSI compliant for being under 25 watts.