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No. 6/2025 (February 10, 2025)
The phone will transmit the location to emergency services.
The Ministry of Digitization, in cooperation with the Office of Electronic Communications, is working on implementing the Advance Mobile Location (AML) system in Poland. Its main purpose is to accurately determine the location of an emergency caller, which will significantly improve the effectiveness of emergency services. AML is already used in most EU countries and has proven its effectiveness in speeding up rescue interventions.
Currently in Poland, the location of callers to 112 and other emergency numbers is based on data collected by mobile network operators, i.e. information from BTS base stations. This method makes it possible to determine only the approximate location of the caller. In many cases, especially in sparsely urbanized areas such as forests, mountains or rural areas, the accuracy of such tracking is insufficient and may even make it impossible to locate a person in need of help. AML significantly changes this, as it uses the phone's GPS module directly. As a result, it makes it possible to determine the location with a precision of up to a few meters in open spaces and tens of meters indoors.
The system works fully automatically and does not require the installation of additional applications. The service is activated when a call is made to 112 or another emergency number. It transmits the caller's exact location in a way that is unnoticeable to the caller, allowing it to be used by all emergency services, including ambulance, police, fire and mountain rescue. Importantly, as of 2022, all smartphones sold in the European Union must support the feature, which means its use will be widespread.
DVB-T2 – regeneration of digital terrestrial TV signal.
For large facilities and in situations where the facility (hotel, guesthouse) is located in an area with weaker signal availability or the signal is interfered with, for example, by other transmitters, it is recommended to use a professional system based on TTX420 R81616 transmodulators from TERRA. The TTX-420 transmodulator, acting as a DVB-T/T2/C signal regenerator, improves signal quality. It is used when the error rate (high bit error rate BER and low modulation error rate MER) in the signal directly downstream of the antenna is high and the use of channel amplifiers or frequency converters proves ineffective and does not allow for distribution of the signal in a SMATV system. Such a problem occurs in areas with poor coverage of terrestrial TV signals. Due to high selectivity, the signal processed and amplified by the transmodulators provides a basis for building larger systems.The diagram below shows an example system for terrestrial digital TV in the DVB-T2 standard TTX420 R81616 transmodulator.
The above diagram uses a set of antennas: TV antenna DIPOL SMART HORIZON COMBO DVB-T2 A2270 and radio antenna DIPOL 1RUZ PM B A0221. A set of 4 TTX-420 R81616 transmodulators (each module for 1 MUX), ma400 R82520 amplifier and R82533 power supply were used for DVB-T2 signal processing and regeneration. One TTX-420 R81616 module allows reception of 1 DVB-T2 MUX (2 same carriers at the input), then undergoes regeneration and modulation of the signal to the DVB-T COFDM standard. Since the bit rate of the input signal stream for a single DVB-T2 MUX is about 50 Mbps, and the TTX-420 module modulates the signal to the DVB-T COFDM standard with a maximum bit rate of 31.68 Mbps, it was assumed that the signal from 1 DVB-T2 MUX would be split into 2 output multiplexes.
 |  | ||
| Name | ULTIMODE OR-20-S3S5-iSMV | ULTIMODE OR-30-S3S5S62B-iSMV | |
| Code | L5830 | L5835 | |
| Wavelength | 1310 nm, 1550 nm | 1310 nm, 1550 nm, 1625 nm | The 1625 nm wavelength is often requested by investors. It is also the primary wavelength for FTTH measurements for larger operators. It highlights the attenuation associated with overly bent cables and fibers the most. |
| Measurement on an active line | NO | YES | The OR-30 is equipped with 2 connectors. The 1625 nm laser connector has filters for lower wavelengths, so it can be used for measurements on active lines - for example, in GPON networks on the side of one of the clients connected to the splitter. |
| Dynamics | 22/20 dB | 32/30 dB | Higher dynamics enables measurement of longer optical paths and paths with more signal attenuating elements (connectors, splitters, etc.). OR-30 allows measurement through one larger or a cascade of smaller splitters. |
| Omission of the launch fibre from the measurement report | NO | YES | The ability to exclude the diverging fiber from the measurement report avoids artificial extension of the line and related ambiguities when presenting the report to the investor. This is particularly important when short lines are measured, where the launch fiber can make up a significant portion of the measured section. |
| Simultaneous measurement of 1310 nm and 1550 nm in OTDR mode | NO | YES | Simultaneous measurement at 2 wavelengths saves some time - especially when measuring a large number of fibers. |
| Event/attenuation dead zone | < 3 m/12 m | 2 m/8 m | Smaller dead zone allows better identification of consecutive events. |
| Copper cable tester function | NO | YES | The OR-30 additionally has the ability to test copper cables, in particular the connection map and the length of twisted-pair cables. A special probe also allows cable identification. |
| Shield | 3.5'' | 5'' | The larger screen allows easier interpretation of measurement results in the field. |
Both devices will allow you to measure the most important transmission parameters of any optical link and detect the location, and often the cause of a fault in the system. The most important difference separating the two devices is the greater dynamic range of the OR-30 L5835 model and the ability to perform measurements at a wavelength of 1625 nm, so the measurements can be performed on an active network – also through splitters.
Doubts when choosing an antenna for LTE?
Wireless Internet access services provided by mobile network operators are an increasingly popular and popular access method chosen by subscribers. The growing popularity is due to falling prices and higher transmission speeds for the services offered. An absolute hit here is the LTE technology enabling to achieve bandwidths similar to those offered by local ISPs. Below is a list of the most common queries about LTE antenna selection is presented:- When should I use an external antenna?
An external antenna should be used when the signal strength indicator on your cell phone or modem shows a low level (less than -85 dBm- less than 3 bars on a 5-degree scale). Such information can be found in almost every smartphone. Another reason to use an external antenna is when the signal level fluctuates a lot – for example, due to periodic reflections or worse weather conditions.
- How to choose an external antenna?
- contact your service provider to:
- determine the service (GPRS, EDGE, CDMA, 3G, HSPA+, LTE) and the frequency on which it operates (900, 1800, 2100, 2600 MHz)
- determine the location of the nearest base station
- check what connector the modem has (usually SMA, TS5 (connector E83201), TS5 (connector E83206))
- To select an external antenna:
- Do the antennas of different providers differ?
Antennas are devices that convert electromagnetic waves into electrical signals and vice versa. If an operator provides services in a band supported by some antenna (information on the frequency band(s) of the antenna is given in its data sheet), then the antenna will also improve the operation of the modem for services available in the same band(s) from other operators.
- What cable and connectors are used to connect the antennas?
Antennas used to improve a mobile operator's signal have an impedance of 50 ohms, so every part of the radio path must have this impedance value (TV coaxial cable is not allowed as it has an impedance of 75 ohms). The exemplary cable used to extend the antenna cable is the Tri-LAN 240 E1171.
The antenna is most often equipped with an SMA connector to which you plug in an antenna connector dedicated to a particular modem.
![Antenna TRANS-DATA LTE KYZ 10/10 + 5 m cable + SMA [698-960, 1710-2700 MHz]](https://static.dipol.com.pl/images/cz/pict/a741024_5.jpg)
Dedicated antenna for LTE networks: TRANS-DATA LTE KYZ 10/10 A741024_5
 | The DS-K1T502DBWX-CQR Hikvision G76165 access control video terminal is an access control video terminal equipped with a keypad and transponder reader in Mifare, Desfire, Felica standards and a Bluetooth receiver. The video terminal has a built-in 2 MP camera, speaker and microphone, allowing two-way audio and video communication and integration with Hikvision IP video door entry system. The device can choose from several available authentication methods – card, card and password, card or password, QR code, Bluetooth. The terminal can work as a standalone device, work with an external controller, video door entry system and iVMS-4200 and HikConnect application. | |
 | Hikvision DS-2CD1383G2-LIUF/SL IP Dome Camera (8 MP, 2.8 mm, 0.01 lux, hybrid illuminator up to 30 m, Audio, LED Alarm, MD2.0, H.265) The K00706 is an IP dome camera from Hikvision with hybrid illuminator, part of the EasyIP Lite series. The cameras in this series have the basic, most commonly used functions, so they are ideal for most systems where stable and trouble-free operation is required. Motion Detection 2.0 eliminates false alarms by filtering out human/vehicle objects. The camera has a 1/2.7” CMOS sensor with a resolution of 8 MP and a hybrid illuminator with a range of up to 30 m to ensure proper visibility in the absence of light. Thanks to the IR and LED illuminator in a single housing, it is possible to select one of three low-light modes: IR white light LED or smart mode. | |
 | The XS12R-C HARTTE narrow XS-C series 12 V DC reversible door strike with BIRA G74233 slip is used for remote wired door opening. This series is widely used in private, office and public buildings, both for aluminum, steel, wood and PVC doors (especially recommended for non-rebated doors). The described model is a reversible electric door strike, which means that it is locked during DC power supply and unlocked after it is off. It can be used with access control systems, intercoms, card readers, etc. | |
Worth reading
Optical-copper DVB-T2 and DVB-S/S2 system in a hotel complex. An owner of a large hotel complex commissioned the system for distribution of DVB-T2 terrestrial television signals and DVB-S/S2 satellite signals, covering 5 facilities. The purpose of the system was to provide terrestrial TV signals in the new DVB-T2 standard from a local transmitter and 15 FTA satellite programs in the form of digital DVB-T signal. TERRA brand equipment was chosen for the project...>>>more
The diagram of the optical-copper wirign for five hotel facilities, including distribution of DVB-T/T2 signal.
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