(Kit - Soldering Required)

low power fm transmitter diy k7
(Includes battery holder, 
not shown in picture)

diy k7

Low Power FM Transmitter Kit

The most powerful FM Transmitter circuit we've seen that operates on such low voltage (just two AA cells). A range of 200 ft can be expected and, given a good antenna and FM receiver, over 1/4 mile can be expected. An external power supply can be used up to 9 volts. Transmits to the FM radio band, which means you can use any FM radio to receive the transmitter. Teaches basics of FM transmitters. Microphone is included - DIY Kit 7.

Also see CK217 our longer range version of this kit.


  • L: 1-3/4" W: 3/4" H: 1/2"
  • Requires 2 AA batteries (holder included, not shown in pic.) 9 volt battery can be used to increase range. (or Use this Power Supply instead of a Battery) 
  • FM Transmitter frequency is user selectable.
  • Transmitter can be listened to on any FM radio.

See CK200.pdf for complete details, including schematic and theory of operation.  Requires Adobe Acrobat Reader available at www.adobe.com for FREE!

Note: This is a kit, you will receive parts to build the item pictured.  If you do not know how to solder you can check out our learn to solder kit. CK0200 - Low Power FM Transmitter - $18.95

Quantity and Educational discounts?


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