Low Power Data TRX

This low power transmitter/receiver modules are often use to send instructions to wireless garage doors or temperature receivers.
Uses other than those described are not permitted without HAM radio license but this modules are very low range and hard to improve.
Output power depend to the small SMD transistor and modulation is limited by the SAW network itself. So it's not possible to build
a broadband audio transmitter or even high speed wireless.  

433.92Mhz SAW data transmitter with +10dbm from 3 to 12V

also from remote transmitter with +10dbm

data transmitter 433.92Mhz
connections: from left data, +Vcc & ground  

868Mhz SAW data transmitter with +10dbm from 3 to 12V, bandwidth approx. 2khz AM
I = 2 to 10mA

868Mhz data receiver from 3 to 12V, I = 1mA 
connections: near c13 = aerial ; left pin = ground ; than +VCC & signal

more soon!