Analysis of information sources in references of the Wikipedia article "RECCO" in English language version.
To investigate the logistics of harmonic radar use in the field, we obtained a RECCO transmitter/receiver … unit in May 2000 for $7,500. The RECCO unit uses a 5-element yagi antenna for transmission and a 4-element patch array for reception … the 5-element yagi antenna … transmits the initial 917 MHz signal. … the operator holds the second 4-element antenna that receives the 1834 MHz reflected signal.
To investigate the logistics of harmonic radar use in the field, we obtained a RECCO transmitter/receiver … unit in May 2000 for $7,500. The RECCO unit uses a 5-element yagi antenna for transmission and a 4-element patch array for reception … the 5-element yagi antenna … transmits the initial 917 MHz signal. … the operator holds the second 4-element antenna that receives the 1834 MHz reflected signal.
RECCO detector's transmitter uses the frequency 902.85 MHz … used for example by the "Intelligent Transportation Systems Radio Service". … In Europe, the RECCO detector uses the frequency 866.9 MHz … reflectors are the same all over the world. … pulsed radio signal at 20% duty cycle and the RECCO system is "silent" 80% of the time (it repeatedly transmits for 20 milliseconds and is silent for 80 milliseconds). … the reflector will re-radiate a signal power of approximately 10 nanowatts … around the frequency 1805.7 MHz. … reflector measures approx. 60x20x2 mm. … all objects containing a diode and a metallic structure will react in the same way as the RECCO reflector. … for example if they have a digital camera or a cell phone (no difference if they are switched on or off). … In Europe, several people have been rescued alive even though they were not wearing any RECCO reflectors, but only carrying some other electronic device like a camera, an MP3 player or similar … maximum distance for detecting an avalanche victim, wearing a RECCO reflector, is around 20‒40 meters.
