Scanner (radio)

Radio scanners are radio receivers that are specialized to monitor many frequencies. The device searches for this purpose the set channels or entire frequency ranges until a signal is found in pre- selected minimum thickness. This signal - such as speech or music - is then output through a speaker or headphones.

Applications

Such devices are easy to listen modulated analog signals. They are frequently used to search for active channels in amateur radio or to listen to the police radio. Other signals such as weather satellites can be received with a radio scanner and decrypted through programs on the PC. On the part of the art and the manufacturer, there are these devices usually are no restrictions which prevent eavesdropping of radio communications of authorities and organizations with security tasks, the military and other security services, although this is dependent on the countries law illegally and with intent to prosecution can draw.

Technology

Radio scanners are available as hand-held devices, mobile devices, and station equipment. Simple devices, as they are sufficient for the amateur radio offer than just FM modulation and can only search within fixed frequency ranges, eg 26-30 MHz, 66-88 MHz, 137-174 MHz or 400-470 MHz. However, and VCRs have a continuous reception range of a few kHz to 3.3 GHz in all types of modulation such as AM, FM, SSB ( LSB and USB) and CW.

Terms of Use

Anyone in Germany may acquire such a device, and have also used. However, to note that only amateur radio frequencies, weather satellites, etc. communications may be intercepted. The interception of BOS frequencies ( authorities and organizations with security tasks) is forbidden here. Even if a permission for participation in the BOS radio exists because one example the police, fire, ambulance etc. is active, that broadcasts can not be received for personal use with a radio scanner.

Manufacturer

• AOR
• Uniden
• Albrecht
• Yaesu
• Icom
• Maycom
• Alinco
• YUPITERU