Review on 🔉 Icstation Digital Audio Transmitter Stereo DSP PLL Module 88-108MHz with LCD Display, MIC, and USB Input: High-Quality Wireless Audio Transmission Solution by Lisa Hall

During the quarantine due to the pandemic, I put a wired microphone in the window to hear sounds from outside (v1), mostly birds at the nearest feeding station. This setup required a small Behringer mixer to boost the gain enough to produce a decent sound. I routed audio to my computer and set up an HTTP stream using VLC to hear from other devices. In summer it was peaceful healthy food to fall asleep to. The new table layout and the colder weather left little room on my desk for the mixer. So I gave up road noise for several months. To bring back sounds with constant streaming ability, I tried using one of my Raspberry Pi computers along with a sound card and microphone, but found that VLC and ffmpeg had issues getting a clean audio workstream on Raspian Linux (V2). to obtain. ). I used to play FM stations and stream audio from my computer and wear FM radio headphones while working outside to listen to music. These were, of course, music streaming services and smartphones. The transmitters I repurposed for this job were different and I can't find the last one I tuned in, I switched to DC and added a quarter wave antenna to boost the signal. Coming back to that effort, I saw this transmitter and thought it might work for an outside mic. For the Pi project I took a plastic ammo box, cut a slot for the power cord and drilled a hole for the microphone so it protrudes under the ledge formed by the cover next to the latch and saved it for this transmitter. I tried using my existing mic with this transmitter but the sound wasn't as good as the built in mic, but I couldn't get the built in mic through the hole as it was board mounted. With a little soldering and a piece of USB cable I was able to move the microphone from the circuit board to the USB cable part. The ends of the USB cable were cut off and I used an inner wire for the positive mic connection and an outer braid (shield) for the negative mic connection. A small amount of shrink wrap was applied to insulate the wires from each other and protect the first inch or so of wiring from the elements. I also put double sided mounting tape on the new mic cable to hold it in place on the circuit board as I have seen that cable solder points on the circuit board can become a wear point if the cable is not secured. To improve the transmission quality, I took the FM antenna from an old stereo receiver, which was just a piece of wire with a push-in coaxial connector, removed the connector and soldered the cable to the circuit board marked ANT. Where I place my outdoor rig is probably 15 feet at best compared to my receiver. I used one of the websites to find available open FM frequencies in my area and the second best on the list was less robust for my location. As for the receiver, I'm using an Icstation wireless digital FM radio receiver with another old receiver antenna soldered to it and am very happy with the transmission and reception quality.