FM Transmitter Mod

February 26, 2012

Overview

A hacked FM transmitter with an improved antenna for cheap, wireless audio on a budget.

Time Invested: 5 hours
Cost: $1
Features:

• 3 selectable frequencies
• External power leads
• 7.1 dBi antenna gain (calculated)
• 88.1 MHz center frequency

Video

Details

I take a trip to the dollar store every now and then just to see what deals I can find. On my last trip I found an FM transmitter in the electronics section made to be powered and used by a Sony PSP. For one dollar, this thing was likely being offloaded below cost. I'd actually been looking for a way to add wireless audio to my room for a while, and since I didn't have plans that Sunday afternoon I decided to grab the cheap little device and expand its capabilities. You can find more information about my modifications to the FM Transmitter in the video below.

Gallery

License: CC BY-SA 4.0 Deed - You may copy, adapt, and use this work for any purpose, even commercial, but only if derivative works are distributed under the same license.

Category: Hardware