An antenna analyzer ' (also known as a noise bridge, RX bridge, SWR analyzer, or RF analyzer) is a device used for measuring the input impedance of antenna systems in radio electronics applications.

A repeater is an automatic radio-relay station, usually located on a mountain top, tall building, or radio tower. It allows communication between two or more bases, mobile or portable stations that are unable to communicate directly with each other due to distance or obstructions between them.

A walkie-talkie, more formally known as a handheld transceiver , is a hand-held, portable, two-way radio transceiver.we are sell high power and FRS walkie-talkie  , The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. , and 2003 in HONGKONG , This personal radio service uses ...

Push-to-Talk over Cellular (PTToC, PoC) is a function that allows a smartphone or mobile phone to be used as a walkie-talkie to communicate with one or more users in a pre-defined group. ... This function requires a Push-to-Talk enabled smartphone or mobile phone.

Terminal of a circuit (such as an amplifier) or an electrical output port, components, parts, or means for receiving electrical power for the DUMMY LOAD.

Basic requirements: impedance matching and withstand the power

A frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Frequency counters usually measure the number of cycles of oscillation, or pulses per second in a periodic electronic signal. Such an instrument is sometimes referred to as a cymometer.

Field strength meter is actually a simple receiver. The RF signal is detected and fed to a microammeter, which is scaled in %. The frequency range of the tuner is usually within the terrestrial broadcasting bands.  

One of the important features of a Bluetooth speaker is the built-in mic that can be used for hands-free calling. The speaker is loud enough that you can clearly hear the person on the other end and it releases your hands to do other tasks while calling, Item is suit for walkie-talkie and mobile radio 

Commercial and professional mobile radios are often purchased from an equipment supplier or dealer whose staff will install the equipment into the user's vehicles. Large fleet users may buy radios directly from an equipment manufacturer and may even employ their own technical staff for installation and maintenance.

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The standing wave ratio meter, SWR meter, ISWR meter (current "I" SWR), or VSWR meter (voltage SWR) measures the standing wave ratio (SWR) in a transmission line.[a] The meter indirectly measures the degree of mismatch between .............more.

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Accessories empower409PTT  Zello users to talk safely behind the wheel and clearly in loud environments. All accessories come with dedicated push-to-talk buttons.We have tested them all, and are confident that they are compatible with our push-to-talk apps. However, you should test any of these accessories in your own environment before standardizing on them or committing to a large purchase.

Citizens band radio (also known as CB radio), used in many countries, is a land mobile radio system, a system allowing short-distance person-to-person bidirectional voice communication between individuals, using two way radios operating on 40 channels near 27 MHz (11 m) in the high frequency (a.k.a. shortwave) band. ......