FM88108 $28.95
fm88108 pic
FM Transmitter 88Mhz - 108Mhz User Tunable
Learn and see how FM transmissions work. This transmitter will demonstrate simple audio FM transmission. Input any stereo source via the standard 3.5MM Mini Jack input found on many portable audio devices such as an MP3 player, CD player, Walkman, etc. Alternatively, you can use an RCA to Mini Jack adapter for sources using RCA jacks such as a TV, DVD Player, VCR, etc. The FM88108 will mux both LEFT and RIGHT input channels and transmit a mono FM modulated signal on ANY user selected FM frequency.

Requiring only ONE standard 1.5V AAA battery to operate. The FM88108 can operate until the battery drops to ~1.0V. However, the FM88108 will need a minimum of ~1.2V at startup. Average current drain is only 10mA. One AAA battery will provide anywhere between 40 to 70 hours of operation.

Mechanical Details
fm88108-cad pic NameDescription
BATT+AAA 1.5V Battery + Terminal
BATT-AAA 1.5V Battery - Terminal
ANTANTENNA, 30Inch Wire
ON-OFFSwitch. Left=ON, Right=OFF
IN3.5MM Mini Jack Stereo Audio Input
VOLVolumn/Input Attenuation
TUNETune FM Frequency from 88Mhz-108Mhz
* BATT, ON-OFF, IN, VOL, TUNE is on BOTTOM side.

fm88108chart pic

Simple How to Use
  1. Turn on any FM receiver to an unused station. You will hear static.
  2. Turn on FM88108.
  3. Turn FM88108's TUNE dial until you hear static disappears. You are now transmitting on this Frequency. This will take some practice.