Dire situations require unpleasant solutions, an excellent example of this statement is spying and we have
Wireless Technologies for Energy Harvesting and Transmission for Ambient Self-Powered Systems
UHF Receiver Pocket Size For All UHF Transmitters
GetUSCart- Electronics
A Review of the SpyVerter R2
NEP's BSI Team Releases the World's Smallest Wireless Transmitter
Fitness Audio SM716 UHF Transmitter - Fitness Audio Shop
2.4 Colorful Display]Car DAB/DAB+ Radio Adaptor, Portable DAB Digital Radio Bluetooth FM Transmitter Music Receiver+60 Presets+Handsfree Call+AUX IN/OUT+Dual USB Charge Port +U Disk/TF Card Play 64G : Buy Online at Best Price
Digital 6000 - Sennheiser
TR-3201, Low temperature data logger
Radio Equipment - an overview
Finally an inexpensive FrSky-Compatible transmitter! This beginner transmitter uses plastic gimbals, and won't give you as much control as the more
TINY X8 FrSky-compatible Radio Transmitter
Spy bug fm transmitter
Harris 1997 Catalog, PDF, Amplifier