Can I use a piece of copper wire for an antenna with this or does it have to be a bar antenna?

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".

What are the rx tx and gnd spots used for?

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.

I currently am an extra class amateur radio operator.how do i program these for the 76 mhz band?

Hams aren’t allowed to operate on the 76 MHz band.

Windows doesn't recognize the board as a sound device. i get power from usb, but can only transmit via line in. thoughts?

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.

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

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

Product ID: 708535595

Details

Brand
Weewooday
Connectivity Technology
USB
Material
Metal
Power Source
Corded
Special Feature
LCD Screen

⚡Low Power

📺LCD Display

🔊Stereo Output

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€ 101.40

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎤 Tune In, Stand Out!

🔌 VERSATILE INPUTS - Supports line, USB, and mic inputs for all your audio needs.
🎶 CRYSTAL CLEAR SOUND - Experience high-quality audio with DSP and PLL technology.
📡 WIDE FREQUENCY RANGE - Transmits from 76.0 to 108.0 MHz for maximum compatibility.
💡 BRIGHT BACKLIT DISPLAY - Easily view settings even in low light with the blue LCD.
⚙️ USER FRIENDLY CONTROLS - Adjust frequencies effortlessly with simple button presses.

The Weewooday 2 Pieces Digital FM Transmitter Module offers a robust solution for wireless audio transmission, featuring advanced DSP and PLL technology for superior sound quality. With a frequency range of 76.0 to 108.0 MHz and multiple input options, this module is perfect for various applications, from broadcasting to monitoring. Its low power consumption and clear LCD display make it an ideal choice for both professionals and hobbyists.

Specifications

ASIN	B08PVBZB8F
Audio Output Type	internal
Audio input compatible with the item	LINE/USB/Mic
Audio output mode	Stereo
Batteries Included	No
Batteries Required	No
Brand	Weewooday
Compatible Devices	Radio
Compatible media type	802.11b, 802.11g, 802.11n
Connector Type	USB
Country of Origin	USA
Customer Reviews	4.4 4.4 out of 5 stars (140)
Date First Available	29 November 2023
Display Type	LCD
Hardware Interface	USB
Includes Rechargeable Battery	No
Includes remote	No
Item Weight	18.1 g
Item model number	Weewooday-Transmitter Module-01
Manufacturer	Weewooday
Material	Metal
Media type	USB
Model	Weewooday-Transmitter Module-01
Model Name	Weewooday-Transmitter Module-01
Package Dimensions	14.5 x 10.21 x 1.09 cm; 18.14 g
Power Source	Corded Electric
Special Features	LCD Screen
Supports Bluetooth Technology	No
Tuner Technology	DAB
Voltage	5 Volts (DC)
Wireless Type	802.11bgn

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