Yes there is. We have a range of portable and mobile radios available in our portfolio which do support Bluetooth devices such as headsets etc. These are available for the Aviation band, for the licensed LMR/PMR bands (VHF/UHF), for Amateur bands as well as for the LTE PoC devices.
Yes. These types of communication equipment are categorized as Amateur radios, and work in frequency bands between144-146 MHz / 430-440 MHz. Both portable and vehicle mount types are available. The use for this requires a License from the Telecommunication Regulatory Authority (TRA), which can be facilitated by the Amateur Radio Society in UAE, or respective countries of use. A wide range of these products are available in our Portfolio. For short range communication ( i.e. camping, hiking), PMR446 radios can be used. The use of those do not require the user to obtain a license.
Lambda Electronics is an authorized distributor of renowned brands, ICOM, KENWOOD, PROCOM, SAVOX etc. and has a vast portfolio of different types of Radio Communication Systems and accessories in its Portfolio. Established in 1981, we have decades of experience to our credit, in dealing with all types of Digital/Analog Radio products, and systems.
Radio Frequency communication is a type of private wireless communication which does not dependent on any established telecom networks. They work on dedicated frequency bands, for various areas of use, i.e. Land, Marine, Aviation. Yes. For professional radio communication usage, a License need to be obtained from Telecommunication Regulatory Authority, the TRA in UAE for instance, or corresponding authorities in respective countries of use. Exempt from the above is dedicated wirelesses equipment such as PMR446, WLAN Radio and PoC radio devices.
DAS is a Distributed Antenna System. RF (Radio Frequency) signals do not propagate well in buildings. RF signal absorption of wall, floor ceiling and objects in general in combination with reflections does take a toll on the signal strength and quality, which results in signal loss at a relative short distance. In order to compensate for this, a RF signal repeater, connected to multiple antennas, can make a difference. A correctly calculated and implemented DAS can solve your in-house RF signal coverage issues. There are a variety of different technical DAS solution available, ranging from passive DAS solutions consisting of signal splitters, directional couplers, multiple antennas and low loss coax transmission lines ( coax cable) for smaller areas, using passive components including active range extension ( Bi-directional amplifiers), to RF to Fiber optical systems. In the latter the RF signal will be converted to a fiber optical signal at the repeater head end. At the destination, the signal will be converted back into RF. The advantage is that fiber optics are very low in signal loss and do therefore allow the transportation of RF signal over very long distances and areas. The disadvantage is that fiber optical DAS equipment can be relatively costly. Last but not least, not really a DAS but to a certain extent serves a similar purpose, is a leaky feeder. A leaky feeder is a coax cable manufactured with a perforated shield, which allows the RF signal to radiate out of the cable. The radiated energy is very low in power and exhausted after a few meters away from the cable. The leaky feeder concept is for this reason mostly used to provide RF signal coverage near the cable only, like in shafts, small tunnels etc. If you need to extend your RF signal coverage, contact us, we will be able to provide a suitable solution for you.
Satellite push-to-talk radios, such as the ICOM SAT100 and SAT100M, is the latest development in order to provide Ultra Large radio coverage areas. The SAT100 uses the low orbit Iridium satellite network. It enables radio communication literally anywhere on the globe. The only requirement is that the Satellite Radio has to be in the "Line-Of-Site" of an Iridium satellite. Since there is a vast number of iridium satellites orbiting the globe, it guarantees that at any given time a satellite will be in reach. For more information on Iridium satellites services, please follow this link >https://en.wikipedia.org/wiki/Iridium_satellite_constellation<
Technically, hand held radios are able to communicate over quite an impressive distance. 30km and higher are indeed possible, however..! Some manufactures of two-way radios do label their product with 30 miles range or such. Such statement is not entirely wrong, but highly misleading! It does not represent real live scenarios. Under ideal conditions, which requires a Line-Of-Sight, the range or distance printed on the packing may be possible, however real live radio applications are far away from ideal conditions. Modern two-way radios are operating in frequency ranges between approximately 110 to 900 Mhz. As a general rule, radio waves in these higher frequency range are propagating in a kind of straight line, or Line-Of-Sight. In other words, as long the radios can see each other, they will be able to communicate. Here is where your 30km and more, are originating from, which is the distance to the horizon. This however changes drastically when radios can no longer see each other, like if they are operated in-house, like in a shopping mall, tunnels, high-rise buildings etc. Line of sight in these cases is no longer a range supporting factor. Radios waves are unable to penetrate walls, but may do so via windows depending on the glass type used (some foil does not). They are also reflected by objects, which supports non line of sight radio operation by bouncing off surfaces. This is why two parties in different parts of a building can communicate with each other, if not too far separated since non line of sight conditions does support limited ranges only. This is where other equipments, such as repeaters & distributed antenna system are used to extend the range. In order to obtain a reliable two-way radio communication coverage for a specific application, proper planning of all components are the key factor for success.
The use of two-way PMR (Private Mobile Radio) radios do require in most countries a license for each radio, with fees to be paid to the authorities. In the UAE these licenses are called a spectrum license, which is usually valid for a year. For License Free radio equipment, the above-mentioned spectrum licenses are not required. However also License Free radio equipment does require an approval from the relevant authorities prior to being sold or operated. These approvals are obtained by the importer so that the individual user does not have to deal with this. Radios which are applicable for a license free approval are manufactured in order to fulfill certain and very specific criteria, prior to obtain an approval. A common standard for License Free radios is the European PMR446 standard. The Telecommunication Regulatory Authority (TRA) of the UAE has implemented the PMR446 standard in their regulations. Other License Free radio standards, like in the USA popular FRS > Family Radio Service, or GMRS> General Mobile Radio Service, are not implemented in the TRA regime and are therefore not permitted to be used in the UAE.
POC does stand for Push to talk Over Cellular. PTT is the acronym for Push To Talk which again is used to describe a two way radio communication method where the user has to press, or push a button before he/she can talk to send a voice message to the other party. POC radios are using the mobile phone network infrastructure (LTE 4G /3G) for their operation and require therefore a SIM card per each device, like a mobile phone does. However POC devices do not require a license like PMR radios require in many countries. The handling and usage of a POC device is on the other hand not different from any other radio a user might have used before. POC radios communication range is only limited by the range of the network of the network service provider, WLAN radio or PMR446 radio. The coverage is limited only by the coverage of the mobile phone service providers network, which usually is country wide.
A WLAN radio is a two-way radio, also known as a Walkie Talkie. The difference to a conventional 2-way Radio is that a WLAN based radio does use a wireless LAN infrastructure, with wireless access points, to extend its radio signal coverage. The handling and usage of WLAN radios is not different from any other LMR, PMR, PMR446 or POC radios. WLAN based radio systems are ideally suited for in-house radio installations, like shopping malls, hotels, high rise buildings, tunnels etc., Hence where a wireless access point infrastructure is already available, planned or can easily be extended. WLAN access points are relatively inexpensive and compete therefore with conventional DAS (Distributed Antenna Systems) for conventional radio installations. The coverage and reach of WLAN radio are limited only by the access point (WLAN) network. Due to the low power consumption, WLAN radios operate up to 24 hour with a single battery charge. WLAN radios do not require the customer to obtain a frequency spectrum license.
