Mob Radio Official: The MOB RADIO®’s trademark registration is intended to cover the following categories: live radio personality performances; live visual and audio performances by a radio personality, and live video and audio performances by a radio personality. A radio personality’s entertainment services include non-Downloadable music videos, nondownloadable film clips, and non-downloadable photographs and video clips.
A mobile radio or mobile is a sort of wireless communication system that employs radio frequencies and has a moveable line of communication on either end. It might be difficult to define what defines “mobile” equipment. For the purposes of US licensing, a mobile device can comprise hand-carried (or portable) technology. The term “radiophone” is no longer in use. A salesperson or radio repair shop would understand the term “mobile” as a vehicle-mounted transmitter-receiver (transceiver) for radio communications from a vehicle. A mobile radio’s microphone and control panel are often situated within easy reach of the vehicle’s driver.
In the United States, such a device is often powered by the host vehicle’s 12-volt electrical system. Mobile radios can be found in a wide range of locations, including ships, motorcycles, and even trains. The power of each platform may differ. A locomotive’s transportable radio would require 72 or 30 volts of DC to operate. With 117 V AC power, a base station can be set up on the bridge of a large ship. Identifying the differences between two-way and three-way communication The distinction between radiotelephones and two-way radios is becoming increasingly difficult.
A single frequency range is assigned to each radio. If the towing company and the auto club’s frequencies were on the same band, one radio with scanning might be used for both. Because mobile radios typically operate on a single frequency band, multi-frequency communication may need the usage of multiple radios.
The infrastructure of the System
A suitable analogy for this topic is the convergence of computers and phones. Over the public switched telephone network, a full-duplex (simultaneous talk and listen) circuit-switched radiotelephone is typically used to communicate with other radiotelephones (PSTN). The connection is created after the user dials the number. The connection is broken when the end button is pushed. A telephone system, such as AMPS or GSM, is used to power them. This statement’s citation isn’t provided.
The two-way radio system, rather than telephones, is primarily used for dispatch[citation needed] and contact with other radios. These systems are operated using PTT technologies such as Nextel’s iDEN, Specialized Mobile Radio (SMR), MPT-1327, and Enhanced Specialized Mobile Radio (ESMR), as well as regular two-way systems. Some current two-way radio systems may have this feature.
A significant number of radios
For dispatch purposes, towing and ambulance services, for example, may employ multiple radios in each vehicle. Tow vehicles are not uncommon to have two radios: one for speaking with the towing company and the other for communicating with emergency road services. Similarly, ambulances may be equipped with two radios, one for government dispatch and the other for private firm dispatch.
Multiple controls and microphones are available
A mobile radio in a US ambulance frequently has two sets of controls: one near the patient and one near the driver. In ambulance radios in the United States, dual controls and multiple microphones are popular, allowing the radio to be used from either the vehicle’s cab or the patient care area.
Radio waves are used for data Transfer
In order to accommodate a mobile data terminal, both tow vehicles and ambulances may be equipped with an additional radio. You can send and receive data over a different radio frequency with a data terminal radio. As a result, data and voice can be delivered and received via a single radio, much like facsimile machines. In the early days of its radio system, Federal Express (FedEx) used a single radio for data and speech transmission. The radio had a “request-to-speak” button that could be used to contact the dispatch center.
Walkie-talkie converters are gradually replacing mobile radios
As a cost-cutting approach, some systems employ vehicle chargers instead of mobile radios. Users of the radio are given their own walkie-talkie. In each vehicle, there is a charging station. The user plugs the walkie-talkie into a car charger or converter while driving. A charger or converter performs services such as connecting the walkie-talkie to the vehicle’s two-way radio antenna, connecting an amplified speaker, attaching a mobile microphone, and charging the walkie-talkie’s battery. [b] In some installations, the connector technology employed in these systems has proven to be problematic. Receiver performance worsens in heavily crowded areas with weak radio signals. These systems are sometimes referred to as “jerk-and-run” systems.
Today
It’s far past the time for bespoke design. There are numerous “options” available on modern mobile radios. On a mobile radio, which can be controlled by a microprocessor and comes preloaded with features such as a unit ID, there are over one hundred channels available. The usage of computer software to program the features and channels of a mobile radio is common. Menus may have a variety of options, some of which are nested several levels deep. Some mobile radios have alphanumeric displays that transform channel numbers (F1, F2) into more understandable phrases like “Providence Base” and other terms. Radios are now pre-programmed with a wide range of capabilities to avoid the need for bespoke design.
The latest digital radio voice communication systems have exceeded their analog equivalents in terms of clarity, security (including encryption), and low-band data transfer capabilities, to name a few. DMR and Project 25 (APCO-25), and Terrestrial Trunked Radio, are examples (TETRA).
Antenna
A mobile radio necessitates the use of an antenna. The most common antennas are stainless steel wire or rod whip antennas that protrude vertically from the automobile. Because the length is directly related to frequency, an antenna’s length cannot be adjusted arbitrarily, as determined by physics. The traditional “quarter wave” antenna in the 25-50 MHz frequency is available in lengths of over nine feet. A 900 MHz antenna can be as short as three inches for a quarter wavelength. On the roof of a public transit vehicle, a white plastic blade or fin-like antenna can be found.
Antennas can be made to look like the vehicle’s original AM/FM antenna or a rearview mirror, or placed behind windows or beneath the floor pan or underbody. The frequency for which aircraft antennas are used determines their design and size. Flat panels that function as microwave antennae can be installed on the plane’s surface. Antennas that can be connected to automotive parts or steel body portions with a powerful magnet can be utilized for temporary installations.
Antennas, which are frequently broken but are not covered by mobile radio fleet maintenance contracts, can be costly to replace, despite the fact that they were originally fairly inexpensive mobile radio system components. Antennas can be easily damaged in cars that are driven 24 hours a day, have stiff suspensions, are tall, or have rough diesel engine idle vibrations. The type of antenna and its location has a significant impact on system performance. Before a definite choice is made about an antenna site or kind, many vehicles in a big fleet are tested.
