Ads
related to: uhf vs vhf walkie talkie antenna adapters for rv internet radio- GPS Navigation
Get GPS for Your Car, Truck, Boat,
Motorcycle, or Fitness Activities
- Car Stereos
Swap out Your Factory Radio to Get
the Latest Features in Your Car
- Car Audio
All the Latest Gear from Stereos to
Backup Cams and Bluetooth Adapters
- Home Audio
Experience Your Music Like Never
Before with New Home Audio Gear
- GPS Navigation
walmart.com has been visited by 1M+ users in the past month
3579 S High St, Columbus, OH · Directions · (614) 409-0683
ebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
The VHF band is the first band at which efficient transmitting antennas are small enough that they can be mounted on vehicles and portable devices, so the band is used for two-way land mobile radio systems, such as walkie-talkies, and two way radio communication with aircraft and ships (marine radio).
The rubber ducky antenna is a form of normal-mode helical antenna. Electrically short antennas like the rubber ducky are used in portable handheld radio equipment at VHF and UHF frequencies in place of a quarter-wavelength whip antenna, which is inconveniently long and cumbersome at these frequencies. [2]
Using relatively high power and a high gain antenna, this propagation will give marginal enhanced over-the-horizon VHF and UHF communications up to several hundred kilometres (miles). During the 1970s commercial "scatter site" operators using huge parabolic antennas and high power used this mode successfully for telephone communications ...
Land mobile radio systems use channels in the VHF or UHF bands, since the antennas used at these short wavelengths are small enough to mount on vehicles or handheld transceivers. Transmitter power is usually limited to a few watts, to provide a reliable working range on the order of 3 to 20 miles (4.8 to 32 km) depending on terrain.
Small monopoles ("whips") are used as compact, but low-gain antennas on portable radios in the HF, VHF, and UHF bands. Whip Type of antenna used on mobile and portable radios in the VHF and UHF bands such as FM "boom boxes", consists of a flexible rod, often made of telescoping segments
450–470 MHz: UHF business band, General Mobile Radio Service, and Family Radio Service 2-way "walkie-talkies", public safety; 470–512 MHz: Low-band TV channels 14 to 20 (shared with public safety land mobile 2-way radio in 12 major metropolitan areas scheduled to relocate to 700 MHz band by 2023 [12])
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [ 1 ]
Professional mobile radio (also known as private mobile radio ... They use channels in the VHF and UHF bands, giving them a limited range, usually 3 to 20 miles (4.8 ...
Ads
related to: uhf vs vhf walkie talkie antenna adapters for rv internet radiowalmart.com has been visited by 1M+ users in the past month
3579 S High St, Columbus, OH · Directions · (614) 409-0683
ebay.com has been visited by 1M+ users in the past month