An Especially Tiny And Perfectly Formed FM Bug | Hackaday
Tactic TTX403 2.4GHz 4-Channel SLT RC Mini Radio Transmitter (TX Only)
Make a Teeny Tiny FM Spy Transmitter - Make:
Mini FM Radio Broadcast Transmitter
Mini FM Transmitter
Teeny-Tiny Bluetooth Transmitter Runs on Less Than 1 Milliwatt - IEEE Spectrum
The Ultimate FM Transmitter (Long Range Spybug) : 15 Steps (with Pictures) - Instructables
The Smallest Radio Transmitter You've Ever Seen - Hackster.io
Retekess TR509 FM Transmitter for Church, FCC Certified FM Broadcast Transmitter, Long Range Stereo Mini Radio Station for Drive-in Movie, Church Parking Lot, Lights Fireworks Show
EMAX RTF TinyHawk III Ready to Fly Kit w/ Goggles, Radio Transmitter,
Scott Robert Tiny Transmitter V3 TINY TRANSMITTER V3 B&H Photo
DIY Mini Spy FM Radio Transmitter - Smallest FM Transmitter Ever : 5 Steps (with Pictures) - Instructables
CZE-7C 7W 1W FM Transmitter, Mini Radio Stereo Station PLL LCD with 3.5mm Audio Cable, for Drive-in Church Supermarket School, Black