---
product_id: 261291984
title: "2 Pieces Digital FM Transmitter Module Stereo FM Transmitter DSP PLL 76.0-108.0MHz Stereo Frequency Modulation with LCD Display Line/USB/Mic Input, DC 3.0V - 5.0V"
brand: "weewooday"
price: "£20.94"
currency: GBP
in_stock: true
reviews_count: 8
category: "Weewooday"
url: https://www.desertcart.co.uk/products/261291984-2-pieces-digital-fm-transmitter-module-stereo-fm-transmitter-dsp
store_origin: GB
region: United Kingdom
---

# 100mW output power Blue backlit LCD display Stereo sound with DSP & PLL tech 2 Pieces Digital FM Transmitter Module Stereo FM Transmitter DSP PLL 76.0-108.0MHz Stereo Frequency Modulation with LCD Display Line/USB/Mic Input, DC 3.0V - 5.0V

**Brand:** weewooday
**Price:** £20.94
**Availability:** ✅ In Stock

## Summary

> 📻 Elevate your audio game — broadcast like a pro, anywhere, anytime!

## Quick Answers

- **What is this?** 2 Pieces Digital FM Transmitter Module Stereo FM Transmitter DSP PLL 76.0-108.0MHz Stereo Frequency Modulation with LCD Display Line/USB/Mic Input, DC 3.0V - 5.0V by weewooday
- **How much does it cost?** £20.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/261291984-2-pieces-digital-fm-transmitter-module-stereo-fm-transmitter-dsp)

## Best For

- weewooday enthusiasts

## Why This Product

- Trusted weewooday brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Audio Inputs:** Supports Line, USB, and Mic inputs to stream audio from multiple sources seamlessly.
- • **Compact Dual-Pack Value:** Two modules included for multi-zone broadcasting or backup — double the power, double the reach.
- • **Precision Frequency Control:** Tune effortlessly from 76.0 to 108.0 MHz with 0.1 MHz increments for perfect signal clarity.
- • **User-Friendly LCD Interface:** Blue backlit display ensures easy frequency and mode adjustments even in low-light environments.
- • **Crystal-Clear Stereo Broadcast:** DSP and PLL tech deliver premium stereo sound with minimal noise interference.

## Overview

This 2-pack digital FM transmitter module features 100mW output power with DSP and PLL technology for high-quality stereo sound. It supports a wide frequency range (76.0-108.0 MHz) with fine 0.1 MHz tuning steps, and multiple audio inputs including Line, USB, and Mic. The blue backlit LCD display offers clear visibility in any lighting, while its compact design and low power consumption make it ideal for professional-grade wireless audio broadcasting, monitoring, and creative projects.

## Description

2 Pieces digital FM transmitter module FM transmitter stereo frequency modulation DSP PLL 76.0 -108.0MHz multi-function frequency modulation with LCD display LINE/USB/MIC Input DC 3.0v-5.0v User-defined settings: Setting about the backlit LED mode: After turning off the power, press and hold the up and down radio buttons at the same time to turn on the phone. B1 means that the backlight is always on, and B0 means that the backlight is off for 20 seconds. The settings will take effect after restarting. (The factory default setting is to turn off the backlight after 20 seconds) 2.Turn on/off campus broadcast frequency band: When turning off the power, press and hold the "VOL +", "VOL-" keys and turn on the power C1 on the LCD display to turn on the campus broadcast, and turn off C0 to turn off the campus broadcast, the setting will take effect after restarting. (The factory default setting is to close the campus broadcast frequency band) 3. Settings of stereo/mono transmission mode: There are 2 solder joints M and G on the back of the module. The short connection is a single tone transmission, and the disconnection of these 2 points is the start of the stereo system. (The factory default is stereo system startup). Specifications: Power supply voltage: DC 3.0v - 5.0v Output Power: 100mW Equivalent noise: >=30dB Operating current: 35mA Modulation mode: standard FM Adaptive antenna: 75 cm bar antenna Transmission frequency: 88.0~108.0 MHz Frequency response range: 50~18 KHz Sound track: line/USB channel (stereo); Mic channel (single channel) Transmission frequency: 76.0~108.0 MHz (campus broadcast: 76.0~87.0 MHz) Frequency adjustment stepping: 0.1 MHz/ times (short press the key); 1.0 MHz/ times (long press the key) Package includes: 2 x Digital FM transmitter module Note: The stereo system must meet the input stereo requirements of the module

Review: Great Features, Performance and Build - The two units came in anti-static bags. The only documentation is on this listing page. They work right out of the bag with micro USB power connected and no antenna. Adding an antenna is necessary for better range (reception over longer distances). There are volume and frequency up/down buttons as well as a mute ("pause") button. For the frequency buttons: If you long press, they will go up/down in 1 MHz units steadily (i.e., release button when you reach the value). Short presses increment/decrement in 0.1 MHz steps. USB to FM: Plugged into my Macbook Pro, it appears as a USB audio output device, and can broadcast system audio to the displayed FM frequency. This is handy, considering newer Mac's lack headphone outs. The device's microphone is not available as a sound input device via USB. Mic to FM: If I plugged the unit into a power supply, (either USB without a data connection, or the solder points) the microphone became active. The mic signal is actually excellent, with a clear and full response. Line Input to FM: With an external media player plugged into the line input, the mic is disabled. The line input's sound quality is also excellent. It has full frequency range, and the dynamic range is as good as can be expected from FM. A couple of times, I experienced some unexpected background noise, but I suspect it was unrelated to the transmitter. There's an option to connect a single-wire antenna with a thru-hole solder connection. The instructions recommend a 75 cm telescoping antenna. However, as my use is just around the house, and I wanted to keep the unit more portable, I just soldered a 12-inch length of 18 AWG solid copper wire. I can go around my house (away from the transmitter) and the signal strength is quite good. There are also two thru-holes for power, which are clearly labeled. It says 3.0-5.0v. I soldered a 3-AAA battery holder to those points and it works perfectly, even with rechargeables. The seller recommends disconnecting the external power source when connecting to USB (so it is not receiving power from both at the same time). I'm SUPER pleased with this purchase. Getting a two-pack makes this an unbelievably good deal. It's a truly excellent product at a great price. I bought another 2 pack. Though this transmitter does offer "campus" bands (additional frequencies below the standard range), I've never needed these, as I've always found some available frequency. UPDATE SEP 2024: Units are still going strong. Another review mentioned that USB did not work with their more recently purchased units. I also had purchased again more recently and find that the USB works as before, even with a recent Mac. I've been using one of these transmitters with a 12" wire antenna, along with a small MP3/FM player, for my in-ear monitoring system. When I arrive at the venue, I find a quiet, unused FM frequency on the MP3/FM player. Then I set the transmitter to that frequency. I feed my monitor signal into the FM transmitter. After setting correct levels, it just works. I've used it on 20+ gigs and never had an issue. Sounds fantastic.
Review: Great FM transmitters, for good range and saving money! - These FM transmitter modules are fantastic if you don’t want to spend $100+ on a bulky, enclosed unit like the ones sold on desertcart. All you need to do is solder a fairly long wire to the antenna pad and plug it in. What’s really nice is that these modules can transmit audio through USB, so you can easily create a tiny, portable FM transmitter that plugs directly into your computer for music playback. I bought these for my Christmas light show. I connected the power pins to a 5V power supply that also powers my LEDs, and plugged the AUX port into a Raspberry Pi. I added a toggle switch so it wouldn’t stay on during testing, but it could just as easily be powered via a micro USB cable connected to the Pi. I 3D printed a small case for the transmitter, but while test-fitting it, I pressed too hard and cracked the LCD. The module still works, but half of the display is broken, as shown in one of the photos. These modules are a bit fragile—especially around the LCD corners—so handle them carefully. I’m not docking a star for this, since it was entirely my fault. Thankfully, they come in a two-pack! 😊 Also, these little guys are pretty hard to mount whether you are building a case for it or just attaching it to a piece of plywood. They are solid pcbs so they don’t have any mounting holes whatsoever. I have a picture of what I did to get around this. Probably not the best way, but it holds it in strong. Overall, these are great little modules and a perfect budget-friendly FM solution—especially for light shows or projects where you don’t want to spend a lot on a full transmitter. Just note that some simple soldering is required, but it’s very easy and nothing to worry about. One last note: I attached a long piece of solid-core copper wire (the kind used for doorbells) as the antenna, and I was able to get a clear signal from over 500 feet away in my car. Basically, any decent length of wire will give you a solid signal

## Features

- Good performance: thanks to the DSP and PLL technology, these multi-functional stereo FM transmitter modules can provide you with quality stereo.Connect the wires according to the instructions. Do not connect the wires in the wrong way to avoid damaging the adapter. If the wires are not connected properly, there may be a red fuse situation. After connecting the wires, wrap them with insulating tape to prevent any peeling
- Practical design: the FM transmitter module has a blue backlit LCD display, allowing you to clearly see the value in a dark environment; The power consumption is extremely low, and noise interference is small
- Suitable for: this digital FM transmitter supports line/USB/mic audio channel input, its transmitting frequency range is 76.0 to 108.0 MHz, and the frequency response range is from 50 Hz to 18 KHz; Frequency adjustment stepping is 0.1 MHz/ times when short press the key and 1.0 MHz/ times for long press
- Wide uses: the digital FM transmitter module can be applied to FM wireless audio, USB PC audio broadcast, maternal and monitoring, wireless microphone and much more
- Warm notice: please confirm whether the power polarity and power voltage are correct before turning on the power; If the input voltage exceeds 5V or the positive and negative poles of the power supply are connected reversely, it may cause permanent destroy to the module; Do not touch the components on the back of the module while working, so as not to affect the normal operation of the module

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08PVBZB8F |
| Additional Features | LCD Screen |
| AntennaDescription | 75 cm bar antenna |
| Audio Input | LINE/USB/Mic |
| Audio Output Mode | Stereo |
| Audio Output Type | internal |
| Best Sellers Rank | #108 in MP3 Player FM Transmitters |
| Bluetooth support? | No |
| Brand | Weewooday |
| Compatibility Options | FM Radio Capable Devices, USB |
| Compatible Devices | FM Radio Capable Devices |
| Connectivity Technology | USB |
| Connector Type Used on Cable | USB Type A |
| Control Method | Touch |
| Customer Reviews | 4.4 out of 5 stars 165 Reviews |
| Display Type | LCD |
| Enclosure Material | Metal |
| Hardware Interface | USB |
| Human Interface Input | Buttons |
| Includes Remote | No |
| Installation Type | wired |
| Item Weight | 18.14 g |
| Lithium-Battery Voltage | 5 Volts (DC) |
| Manufacturer | Weewooday |
| Material | Metal |
| Model Name | Transmitter Module-01 |
| Number of Channels | 1 |
| Power Source | ['DC Powered'] |
| Rechargeable Battery Included | No |
| Special Feature | LCD Screen |
| Supported Application | FM wireless, USB PC broadcast, maternal and child monitoring, wireless microphone |
| Supported Media Type | USB |
| Supported Standards | 802.11b, 802.11g, 802.11n |
| Unit Count | 2.0 Count |
| Voltage | 5 Volts (DC) |
| Wireless Compability | 802.11bgn |

## Product Details

- **Brand:** Weewooday
- **Connectivity Technology:** USB
- **Material:** Metal
- **Power Source:** ['DC Powered']
- **Special Feature:** LCD Screen

## Images

![2 Pieces Digital FM Transmitter Module Stereo FM Transmitter DSP PLL 76.0-108.0MHz Stereo Frequency Modulation with LCD Display Line/USB/Mic Input, DC 3.0V - 5.0V - Image 1](https://m.media-amazon.com/images/I/81sAPBWhp2L.jpg)

## Questions & Answers

**Q: Can I use a piece of copper wire for an antenna with this or does it have to be a bar antenna?**
A: Use a 26" to 31" wire. If you are broadcasting at the low end of the dial, use a 31" wire. If broadcasting at the high end of the dial, use a 26" wire. If you are broadcasting in the middle of the dial, use a 28-29" wire. If the wire is in a window, you should get anywhere from 200-400 feet range. If you are on an upper story and use your car radio to receive, it can go "even further".

**Q: What are the rx tx and gnd spots used for?**
A: I didn't even realize they were there.  They are solder pads.  No info was received on their function, but I suspect that they can but used for some sort of circuit monitoring or firmware flashing and probably aren't for everyday broadcast function.

**Q: I currently am an extra class amateur radio operator.how do i program these for the 76 mhz band?**
A: Hams aren’t allowed to operate on the 76 MHz band.

**Q: Windows doesn't recognize the board as a sound device. i get power from usb, but can only transmit via line in. thoughts?**
A: I attempted to use the USB input with both WIn10 and Win11 laptops. In both cases it worked seamlessly. Two things to try: (1) make sure the USB cable does support data. I tried another USB cable which did not work. I checked with a multi-meter that it only connected the USB power. (2) Check Windows Control Panel and see if there is anything amiss. And make sure the audio 3.5 mm plug is not inserted in the board when you attempt the USB connectivity.
When the data link to the PC is successful 'USB' is displayed in the display panel.
Hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Features, Performance and Build
*by J***S on October 23, 2023*

The two units came in anti-static bags. The only documentation is on this listing page. They work right out of the bag with micro USB power connected and no antenna. Adding an antenna is necessary for better range (reception over longer distances). There are volume and frequency up/down buttons as well as a mute ("pause") button. For the frequency buttons: If you long press, they will go up/down in 1 MHz units steadily (i.e., release button when you reach the value). Short presses increment/decrement in 0.1 MHz steps. USB to FM: Plugged into my Macbook Pro, it appears as a USB audio output device, and can broadcast system audio to the displayed FM frequency. This is handy, considering newer Mac's lack headphone outs. The device's microphone is not available as a sound input device via USB. Mic to FM: If I plugged the unit into a power supply, (either USB without a data connection, or the solder points) the microphone became active. The mic signal is actually excellent, with a clear and full response. Line Input to FM: With an external media player plugged into the line input, the mic is disabled. The line input's sound quality is also excellent. It has full frequency range, and the dynamic range is as good as can be expected from FM. A couple of times, I experienced some unexpected background noise, but I suspect it was unrelated to the transmitter. There's an option to connect a single-wire antenna with a thru-hole solder connection. The instructions recommend a 75 cm telescoping antenna. However, as my use is just around the house, and I wanted to keep the unit more portable, I just soldered a 12-inch length of 18 AWG solid copper wire. I can go around my house (away from the transmitter) and the signal strength is quite good. There are also two thru-holes for power, which are clearly labeled. It says 3.0-5.0v. I soldered a 3-AAA battery holder to those points and it works perfectly, even with rechargeables. The seller recommends disconnecting the external power source when connecting to USB (so it is not receiving power from both at the same time). I'm SUPER pleased with this purchase. Getting a two-pack makes this an unbelievably good deal. It's a truly excellent product at a great price. I bought another 2 pack. Though this transmitter does offer "campus" bands (additional frequencies below the standard range), I've never needed these, as I've always found some available frequency. UPDATE SEP 2024: Units are still going strong. Another review mentioned that USB did not work with their more recently purchased units. I also had purchased again more recently and find that the USB works as before, even with a recent Mac. I've been using one of these transmitters with a 12" wire antenna, along with a small MP3/FM player, for my in-ear monitoring system. When I arrive at the venue, I find a quiet, unused FM frequency on the MP3/FM player. Then I set the transmitter to that frequency. I feed my monitor signal into the FM transmitter. After setting correct levels, it just works. I've used it on 20+ gigs and never had an issue. Sounds fantastic.

### ⭐⭐⭐⭐⭐ Great FM transmitters, for good range and saving money!
*by J***N on November 6, 2025*

These FM transmitter modules are fantastic if you don’t want to spend $100+ on a bulky, enclosed unit like the ones sold on Amazon. All you need to do is solder a fairly long wire to the antenna pad and plug it in. What’s really nice is that these modules can transmit audio through USB, so you can easily create a tiny, portable FM transmitter that plugs directly into your computer for music playback. I bought these for my Christmas light show. I connected the power pins to a 5V power supply that also powers my LEDs, and plugged the AUX port into a Raspberry Pi. I added a toggle switch so it wouldn’t stay on during testing, but it could just as easily be powered via a micro USB cable connected to the Pi. I 3D printed a small case for the transmitter, but while test-fitting it, I pressed too hard and cracked the LCD. The module still works, but half of the display is broken, as shown in one of the photos. These modules are a bit fragile—especially around the LCD corners—so handle them carefully. I’m not docking a star for this, since it was entirely my fault. Thankfully, they come in a two-pack! 😊 Also, these little guys are pretty hard to mount whether you are building a case for it or just attaching it to a piece of plywood. They are solid pcbs so they don’t have any mounting holes whatsoever. I have a picture of what I did to get around this. Probably not the best way, but it holds it in strong. Overall, these are great little modules and a perfect budget-friendly FM solution—especially for light shows or projects where you don’t want to spend a lot on a full transmitter. Just note that some simple soldering is required, but it’s very easy and nothing to worry about. One last note: I attached a long piece of solid-core copper wire (the kind used for doorbells) as the antenna, and I was able to get a clear signal from over 500 feet away in my car. Basically, any decent length of wire will give you a solid signal

### ⭐⭐⭐⭐ One the display doesn't show the leading # 1, shows 07.1, should show 107.1
*by C***A on March 27, 2024*

Any future updates will be below the Dislikes, under the === line. Dislikes: only complaint on one of the 2 I received, the leading one doesn't display, I use 107.1 and it displays as 07.1. Other than that I can't say how well they transmit yet. I would like both units to work the same, it just looks odd seeing only 07.1, when it should display 107.1 I'll post photo's later when I can get them both powered on at the same time to show this issue. ============================================ Upfdate 03/29/2024, I haven't gotten photos yet, but I was able to test both units out. I added 3 feet of actual antenna wire to the Ant pad, plugged a stereo audio cable to the transmitter line in jack, other end into my portable CD player. Turned xmtr on, set my receiver to 107.1FM, then plugged power to the xmtr. Reception on the miniature AM/FM/Digital Recorder I used was awesome. The xmtr was tested from inside my storage shed with door completely closed, my shed and its door are all metal, no windows. I walked to the end of my street, 4 houses to the East, and 4 to the West, xmtr worked perfectly, range was far better than I ever really expected.😮 I was very impressed with the range of this xmtr. No loss of clarity, music played crisp, clear and clean, no stray sounds heard. Didn't start losing the signal until I just got past the end of the block at each end. I tested BOTH transmitters, and BOTH operated exceptionally well. Again, my only complaint is one of the transmitters display shows 107.1 as 07.1, but still functioned 100% otherwise. Same results with both transmitters. If it weren't for the one not showing the leading # 1, I would have given these very tiny, but powerful xmtrs 5 stars. Now I'm just waiting on some project boxes to mount them in. I have a xmtr I bought years ago[in 2010] which cost me around $249.99 + accessories, and this little tiny transmitter is just as good as my original $250 transmitter!🫨 Which is also a humongous giant compared to this one. Can definitely recommend this to anyone looking for an FM transmitter for a Holiday Display, or any multitude of uses. You just need to know you'll have to figure out a mounting system for it, and an enclosure. And for the price, it sure beats paying $60 and up for one xmtr, when you can buy 14 for that $60 starting price tag, or the money you save buying 2 for the price sold for, less than $10 each, you can buy the extras you need, enclosure, antenna jack connector and build it up yourself for a lot less than that $60 price tag for a fully built-up one. ‐---------------- End Update for 03/29/2024 --------------- I just powered them up to make sure they would turn on, which they did. The microphone works, but haven't had a chance to test out the line in from the transmitter to the audio output from my audio player to see how far this unit will actually transmit, and whether I'll be able to utilize it for what I want to use it for. Will update this review after I can do more tests with them after I install an antenna bnc connector on the one with the full frequency display. This is so I can use one of my existing antennas to see how good or bad this transmitter is.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-19*