Mihir Enterprises Shanivarpeth, Pune, Maharashtra

We have found a deep base in the market place amongst the airfield block system manufacturers located in India. We ply a wide spectrum of aircraft block system and automatic aircraft block system available in diverse models. Blocks in the Aircraft What are the Functions of These Blocks? The different blocks of the system are as explained below: 1) Weather Parameters : The different weather parameters to be broadcast using ATIS are monitored here. The monitoring is done on a continuous uninterrupted basis. The signals available from the sensors are properly conditioned and then sent to the ATC. 2) ATC & Computer : Here the weather parameters obtained from different sensors are checked for correctness on a computer terminal. It is this place where the data available is converted into a proper format and then using proper software is converted into voice message. The output voice message is also checked for correctness. The output is then sent to the transmitter where the data and voice are transmitted in proper format. Transmitter Circuit : 3) Modulation Circuit : In this block the voice data available from the PC is modulated using FM modulation. The main consideration for the FM modulation is that the reception of the voice data must be fully error free and free from noise. The aviation band wireless set is used for transmission. Receiver Circuit : 4) Aviation Wireless Set : This block is available in the aircraft that is going to land or take off. In this block the information broadcasted by the ATC is received and then demodulated. The demodulated data is the voice. 5) Microphone : The voice data available after demodulation of the received data is given to the microphone and this is available to the pilot as a listening aid for the ATIS information.

We are one of the goliath remote parameter monitoring system suppliers of the country, pursuing the business of manufacturing remote monitoring system and network remote monitoring system at most competitive prices. Remote Parameter Monitoring System (RPMS) Now a days GSM Technology has got maximum National Network and Data Transmission is also possible through SMS. Through our trials and vast experience in the field of Data Transmission via SMS, it is a reliable communication in case of emergency. And SMS is a matured technology compared to other technology. We can monitor the Health of our costly equipments with periodic intervals and in case of any misbehavior RPMS immediately send the Data. RPMS Software stores the Data of periodic intervals as well as any emergency or panic situation. We can set the lower limit and upper limit of any Parameter and having seven analog channels and seven digital channels. RPMS consists of : 1. GSM Transmitter 2. GSM Receiver 3. PC Software 1.GSM Transmitter :- a)GSM Modem b)Microcontroller c)7 ADC d)7 Digital Inputs 2. GSM Receiver :- A) GSM Modem B) Microcontroller c) PC Interface 3. PC Software :- a) Report of periodic interval. b) Report of emergency. Color Code of Channels : Channel No. : 1 Violet Channel No. : 2 Red Channel No. : 3 Yellow Channel No. : 4 Blue Digital Ch. : 1 Green Digital Ch. : 2 Orange Digital Ch. : 3 Brown Ground : Black Command set of RPMS : 1.To know Hardware ID AQZ#ID 2.To set Time Interval AQZ#T04 ( 04 minute) 3.To set Receiver Number AQZ#N9822088317 ( Set receiver number) 4.To Start AQZ#START 5.To Stop the Transmission AQZ#STOP 6.To Read the current parameter AQZ#READ To set the lower limit and upper limit of any parameter of any channel AQZ#L1L0.8H2.0 (First L1 � Set limit for channel 1) (Second L � To set lower limit) ( H � Upper limit) AQZ#L2L0800.00H2000.0 (First L2 � Set limit for channel 2) (Second L � To set lower limit) ( H � Upper limit) AQZ#L3L0.8H2.0 (First L3 � Set limit for channel 3) (Second L � To set lower limit) ( H � Upper limit) AQZ#L4L150.00H250.00 (First L4 � Set limit for channel 4) (Second L � To set lower limit) ( H � Upper limit)

We are one of the goliath remote parameter monitoring system suppliers of the country, pursuing the business of manufacturing remote monitoring system and network remote monitoring system at most competitive prices. Remote Parameter Monitoring System (RPMS) Now a days GSM Technology has got maximum National Network and Data Transmission is also possible through SMS. Through our trials and vast experience in the field of Data Transmission via SMS, it is a reliable communication in case of emergency. And SMS is a matured technology compared to other technology. We can monitor the Health of our costly equipments with periodic intervals and in case of any misbehavior RPMS immediately send the Data. RPMS Software stores the Data of periodic intervals as well as any emergency or panic situation. We can set the lower limit and upper limit of any Parameter and having seven analog channels and seven digital channels. RPMS consists of : 1. GSM Transmitter 2. GSM Receiver 3. PC Software 1.GSM Transmitter :- a)GSM Modem b)Microcontroller c)7 ADC d)7 Digital Inputs 2. GSM Receiver :- A) GSM Modem B) Microcontroller c) PC Interface 3. PC Software :- a) Report of periodic interval. b) Report of emergency. Color Code of Channels : Channel No. : 1 Violet Channel No. : 2 Red Channel No. : 3 Yellow Channel No. : 4 Blue Digital Ch. : 1 Green Digital Ch. : 2 Orange Digital Ch. : 3 Brown Ground : Black Command set of RPMS : 1.To know Hardware ID AQZ#ID 2.To set Time Interval AQZ#T04 ( 04 minute) 3.To set Receiver Number AQZ#N9822088317 ( Set receiver number) 4.To Start AQZ#START 5.To Stop the Transmission AQZ#STOP 6.To Read the current parameter AQZ#READ To set the lower limit and upper limit of any parameter of any channel AQZ#L1L0.8H2.0 (First L1 � Set limit for channel 1) (Second L � To set lower limit) ( H � Upper limit) AQZ#L2L0800.00H2000.0 (First L2 � Set limit for channel 2) (Second L � To set lower limit) ( H � Upper limit) AQZ#L3L0.8H2.0 (First L3 � Set limit for channel 3) (Second L � To set lower limit) ( H � Upper limit) AQZ#L4L150.00H250.00 (First L4 � Set limit for channel 4) (Second L � To set lower limit) ( H � Upper limit)

We are one of the goliath remote parameter monitoring system suppliers of the country, pursuing the business of manufacturing remote monitoring system and network remote monitoring system at most competitive prices. Remote Parameter Monitoring System (RPMS) Now a days GSM Technology has got maximum National Network and Data Transmission is also possible through SMS. Through our trials and vast experience in the field of Data Transmission via SMS, it is a reliable communication in case of emergency. And SMS is a matured technology compared to other technology. We can monitor the Health of our costly equipments with periodic intervals and in case of any misbehavior RPMS immediately send the Data. RPMS Software stores the Data of periodic intervals as well as any emergency or panic situation. We can set the lower limit and upper limit of any Parameter and having seven analog channels and seven digital channels. RPMS consists of : 1. GSM Transmitter 2. GSM Receiver 3. PC Software 1.GSM Transmitter :- a)GSM Modem b)Microcontroller c)7 ADC d)7 Digital Inputs 2. GSM Receiver :- A) GSM Modem B) Microcontroller c) PC Interface 3. PC Software :- a) Report of periodic interval. b) Report of emergency. Color Code of Channels : Channel No. : 1 Violet Channel No. : 2 Red Channel No. : 3 Yellow Channel No. : 4 Blue Digital Ch. : 1 Green Digital Ch. : 2 Orange Digital Ch. : 3 Brown Ground : Black Command set of RPMS : 1.To know Hardware ID AQZ#ID 2.To set Time Interval AQZ#T04 ( 04 minute) 3.To set Receiver Number AQZ#N9822088317 ( Set receiver number) 4.To Start AQZ#START 5.To Stop the Transmission AQZ#STOP 6.To Read the current parameter AQZ#READ To set the lower limit and upper limit of any parameter of any channel AQZ#L1L0.8H2.0 (First L1 � Set limit for channel 1) (Second L � To set lower limit) ( H � Upper limit) AQZ#L2L0800.00H2000.0 (First L2 � Set limit for channel 2) (Second L � To set lower limit) ( H � Upper limit) AQZ#L3L0.8H2.0 (First L3 � Set limit for channel 3) (Second L � To set lower limit) ( H � Upper limit) AQZ#L4L150.00H250.00 (First L4 � Set limit for channel 4) (Second L � To set lower limit) ( H � Upper limit)

Country of Origin : India

Type : Remote Monitoring System

Application : Remote Monitoring

Feature : Accuracy, Easy To Fit, Measure Fast Reading, Perfect Strength

We are one of the goliath remote parameter monitoring system suppliers of the country, pursuing the business of manufacturing remote monitoring system and network remote monitoring system at most competitive prices. Remote Parameter Monitoring System (RPMS) Now a days GSM Technology has got maximum National Network and Data Transmission is also possible through SMS. Through our trials and vast experience in the field of Data Transmission via SMS, it is a reliable communication in case of emergency. And SMS is a matured technology compared to other technology. We can monitor the Health of our costly equipments with periodic intervals and in case of any misbehavior RPMS immediately send the Data. RPMS Software stores the Data of periodic intervals as well as any emergency or panic situation. We can set the lower limit and upper limit of any Parameter and having seven analog channels and seven digital channels. RPMS consists of : 1. GSM Transmitter 2. GSM Receiver 3. PC Software 1.GSM Transmitter :- a)GSM Modem b)Microcontroller c)7 ADC d)7 Digital Inputs 2. GSM Receiver :- A) GSM Modem B) Microcontroller c) PC Interface 3. PC Software :- a) Report of periodic interval. b) Report of emergency. Color Code of Channels : Channel No. : 1 Violet Channel No. : 2 Red Channel No. : 3 Yellow Channel No. : 4 Blue Digital Ch. : 1 Green Digital Ch. : 2 Orange Digital Ch. : 3 Brown Ground : Black Command set of RPMS : 1.To know Hardware ID AQZ#ID 2.To set Time Interval AQZ#T04 ( 04 minute) 3.To set Receiver Number AQZ#N9822088317 ( Set receiver number) 4.To Start AQZ#START 5.To Stop the Transmission AQZ#STOP 6.To Read the current parameter AQZ#READ To set the lower limit and upper limit of any parameter of any channel AQZ#L1L0.8H2.0 (First L1 � Set limit for channel 1) (Second L � To set lower limit) ( H � Upper limit) AQZ#L2L0800.00H2000.0 (First L2 � Set limit for channel 2) (Second L � To set lower limit) ( H � Upper limit) AQZ#L3L0.8H2.0 (First L3 � Set limit for channel 3) (Second L � To set lower limit) ( H � Upper limit) AQZ#L4L150.00H250.00 (First L4 � Set limit for channel 4) (Second L � To set lower limit) ( H � Upper limit)

Country of Origin : India

Type : Remote Monitoring System

Application : Remote Monitoring

Feature : Easy To Fit, Measure Fast Reading, Perfect Strength

We are the dominated high performance reflector antenna system suppliers located in India. The WIDC24 is a directional reflector antenna system and directional antenna system, which incorporate a 2-piece aluminum die cast parabolic grid type antenna reflector with the PMPF, patented 50-ohm passive feed dipole. Dipoles come in 2 basic configurations, PMPF-xx with integral N type Female connector and PMPF-xxP with 24� pigtail equipped with an N type Male connector or PMPF-xxPF with an N type Female Connector. Installation is simple with the Wireless Interactive adjustable tilt �Heavy Duty� bracket that comes standard. The bracket accommodates poles from 1� up to 2.5� OD. Brackets are full galvanized for extreme corrosion protection and each reflector comes complete with stainless steel hardware and completes assembly instructions. Features and Benefits : Small Size/Reduced Shipping Cost 50 Ω Passive Feed Dipole Integrated Type N Female Connector or 24� pigtail with N Male or N Female Connector 24� pigtail with N Male or N Female Connector Rugged, Lightweight and Waterproof Applications : 2.4GHz ISM Band Applications Point to Point Repeaters Wireless Internet Access MMDS Applications Wireless Bridges Streaming Video

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operators workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Condition : New

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Certification : CE Certified

Application : Railway Station

Condition : New

Driven Type : Electric

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Certification : CE Certified

Application : Railway Station

Condition : New

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Certification : CE Certified

Application : Railway Station

Condition : New

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Application : Complex

Condition : New

Power : 1-3kw

Driven Type : Electric

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Certification : CE Certified

Condition : New

Driven Type : Electric

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

Country of Origin : India

Type : Public Announcement System

Driven Type : Electric

We are one the leading automatic railway announcement system suppliers based in India. We offer you an appreciated range of railway announcement system and voice announcement system. It is an integrated system to work as Auto Announcement PA System & Coach Guidance announcing system. The system shall be capable of automatic announcement with pre-recorded voice prompt. The status of the train is conveyed to the station master by the nearest observatory. The Data is entered by the data entry operator/ Station Master by entering Train number, arrival / departure time and status of the train in the screen format. This particular information is converted into synthesized voice (Text to Voice conversion) with the help of simple VB application program. ADVANTAGES Real Time implementation. Reduces the operator�s workload and relieve frequency congestion. Automatically the recording is updated when there is a change in the information. Continuous broadcasting potential. Functional reliability and flexibility. Voices are easier to recognize. Testing and monitoring of the information at the terminal is doable. APPLICATIONS It can be applied for Industrial weather monitoring system. It is utilized in vacationer information services. It can be used airport ATIS system. Defense services/systems.

We are the authentic point to multipoint wireless LAN system suppliers located in India. Outdoor wireless LAN system & point to point wireless LAN system that offers excellent long distance data. Communication in point-to-point or point-to-multipoint. environments with ranges up to 40 Km. It meets IEEE 802.11b Standards using DSSS (Direct Sequence Spread Spectrum). Therefore, it can be deployed as a hotspot with seamless compatibility with other IEEE 802.11b compliant users. Unlike other WI-FI products, the WI24 product line�s output power is many times greater than the Competition. What is most unique than other IEEE 802.11b Products, is the radios ability to obtain as much as a 5 Mbps FTP, Making the products �price per bit� even more attractive. Features and Benefits : 2.4GHz unlicensed ISM Band Available in 100mW/500mW/1W models DSSS Technology Up to 40km transmission distance Power-over-Ethernet injector included Easy management using SNMP / Web 40-bit or 128-bit encryption Rugged Outdoor Enclosure is Waterproof

We offer you a widely accepted range of instrument landing system and airport instrument landing system which can be availed from us at most competitive prices. We offer you the market�s best products under the single roof named Mihir Enterprises. In addition, we are one of the genius aircraft instrument landing system and suppliers of India. Instrument Landing System (ILS) : ILS is a precision approach system normally consisting of a localizer facility, a glide slope facility, and associated VHF marker beacons. It provides vertical and horizontal navigation (guidance) information during the approach to landing at an airport runway. At present, ILS is one of the primary worldwide, ICAO-approved, precision landing systems. This system is effectively being used by the aircrafts for safe landings during the low visibility conditions. The localizer tracks the central line of the runway and the pointer moves from the center if the aircraft moves away from the central line. Thus acts as a reference to the aircraft positioning. An aircraft is expected to follow a fixed decent cone i.e. it is expected to decent with a given angle. This reference is given by the glideslope which is again a pointer based indicator. Thus while perfect landing the pointers are perfectly perpendicular to each other. Categorisations : Depending on the modernization of the airports or the availability of the systems the airports are categorized as below : 1) CAT I 2) CAT II 3) CAT IIIa 4) CAT IIIb These are done on the following considerations/parameters.

We reckon as one of the superior amongst aircraft distance measuring equipment suppliers located in India. We can bring an eternal gamut of distance measuring equipment and distance measurement equipment that are designed to fulfill the multifarious purpose of diverse industries. Distance Measuring Equipment (DME) : Knowledge of the aircraft�s position is a basic requirement for air navigation and one means of satisfying this requirement is to present the pilot with bearing and distance information. Distance information may be derived from radar or by DME, which is a form of radar. In primary radar a short pulse is transmitted and the time interval from transmission to reception of the reflected pulse is measured. As the speed of an electromagnetic pulse through the atmosphere is 300,000 kilometers per second, or one nautical mile in 6.2 micro-seconds, the distance between the transmitter and the target can be calculated. In the case of radar sited on the ground an aircraft target may be easily identified and the distance measured readily due to its relative freedom from other reflecting objects. If radar is installed in an aircraft, precise identification of specific ground targets, for all practical purposes, is very difficult to effect due to mass reflection from surrounding objects. Hence primary radar is supplemented by additional equipment at the target to enable distance to be reliably measured to the necessary degree of accuracy. When primary radar is supplemented to accomplish this task it then becomes a form of secondary radar. In secondary radar, pulses known as interrogation pulses are transmitted and when received at the target they are passed through a �gate� and then trigger transmission of reply pulses back to the initial source where the time interval may be measured and displayed as distance. The �gate� in the target receiver is an electronic device which is preset to receive only matching pulses. In the DME system the interrogating equipment, known as the �Interrogator�, is installed in the aircraft and the target, located on the ground, is referred to as the �Transponder� or �Ground Beacon'.

We are one of the paramount weather station manufacturer and suppliers based in India. We offer you spacious range of automatic weather station and automated weather station at competent prices. Introduction of Automatic Weather Station The most important contribution of aviation to the economy of every nation is the provision of effective national & international transport system. In most industrialized countries, more than 90% of the international long distance travel is now-a-days by air. For many developing countries modern tourism, made possible by effective air links, represents a valuable contribution to the national economy. World Meteorological Organisation (WMO) was set up in 1951 by UN and a Commission for Aeronautical Meteorology (CAeM) was set up to deal with international aspects of the application of meteorology in support of air navigation. The International Civil Aviation Organisation(ICAO) was established in 1947. ICAO is responsible for the specification of aviation requirements in the field of meteorology and for relations with other aeronautical services and operators. ICAO regulations define state responsibility regarding the safety, efficiency and regularity of international air navigation. Meteorology gives valuable support to aviation and is indispensable for the safety of air navigation. Airline transport depends largely on turbojet and turboprop aircraft. Departure time, take-off weight, flight path and altitudes, reserve fuel, alternate airdrome and landing weight are adjusted according to the data provided by the aeronautical meteorological service. Essential meteorological data for take-off and landing are wind direction, wind speed, temperature, humidity or dew point, pressure, visibility and runway visual range, cloud height and weather. The impact of a relatively small change in wind, visibility, temperature or pressure on air operations is very high. Hence it is essential to equip each aeronautical meteorological station with accurate and reliable instruments located at the right position on the aerodrome. These stations continuously monitor and report all weather parameters essential for aviation. These stations are equipped with CWIS (Current Weather Instruments System) for continuous indication and recording of Temperature, Dew Point / Humidity, Wind Speed, Wind Direction and Pressure. CWIS consists of : a.Sensors at site near touch down zone b.Main console at Met Briefing Room (MBR) c.Slave Display at Air Traffic Control (ATC) Automatic Weather Station (AWS) : An AWS is a station at which instruments make and either transmit or record observations automatically. The conversion to code form, if required, being made either directly or at an editing station AWS consists of : 1. Sensors 2. Signal conditioning Amplifier 3. Data conversion, storage and transmission Subsystem 4. Radio Relay System 5. Radio Receiver 6. Data Acquisition System 7. Computer with necessary software 8. Slave displays for ATC & MBR Description of the system 1. Sensors : The system employs sensors for Temperature, Pressure, Humidity, Wind Speed and Wind Direction. Changes in physical properties of sensors which varies linearly with change in meteorological parameters are registered. 2. Signal Conditioning Amplifier : The signal Conditioning Unit accepts the input signals from sensors and gives a necessary conditioned electrical output corresponding to the entire range of each parameter. 3. Data conversion, storage and transmission Subsystem : This subsystem is composed of signal conditioning hardware for preventing unwanted external sources of interference from influencing the raw sensor signals, for protecting the equipments and for adapting signals to make them suitable for the data processing. This subsystem digitizes the data and converts it into a suitable format for radio transmission. All the parameters will be transmitted after every 5 seconds. In case of Radio link failure the data is stored in the internal memory provided. One minute average data of each parameter will be stored. The memory provided is sufficient to store data for 15 days (Or as per IAF need). 4. Radio Relay System : The data is transmitted through VHF / UHF half duplex / simplex transceiver. This transceiver uses packet switching protocol using CRC error detection and correction to prevent incorrect data at receiving end. The Radio Relay system will be capable of transmitting the signals for more than 5 Km. aerial distance. The RF MODEM is engineered for dependable and versatile digital communications with in-built intelligence and CRC check. These units reflect many year of experience are built with an eye towards emerging applications. The MODEM can fill a variety of rolls including basic packet, GPS / APRS, and telemetry. The VHF/ UHF sets are full-featured FM transceivers designed for flexible mobile and base station business communications in the VHF and UHF land mobile bands. These leading edge transceivers provide 5W / 25W of transmitter power. Highly integrated surface mount circuit design and a die-cast aluminum chassis assure reliability. Important channel frequency data is easily programmable by using PC. RF MODEM will accept the data input from Data converter, storage and transmission subsystem. The intelligence inside the MODEM will convert the data into packet formats, will use error correction algorithm. This data will be modulated and transmitted using RF link to MBR (Met. Briefing Room). 5. Radio receiver : The data transmitted by the Radio relay system, is received, demodulated and is checked for CRC for the data integrity. On receipt of correct valid data acknowledgment is transmitted to the Radio Relay System. The received and demodulated data is then brought out for Data Acquisition System RF MODEM packet communicator along with VHF/UHF set will be used at this point as FM receiver. 6. Data Acquisition System : Data Acquisition function consists of scanning and storing the output of radio receiver modules at a predetermined rate and translating the signals into computer readable format. The METLOG 02 is a rugged and compact microprocessor based data logger designed to provide a cost-effective solution for meteorological data acquisition and transmission. A simple, user-friendly interface provides access to the METLOG's programmable features, including data storing interval and data printing interval. This programmability, along with its impressive array of sensor capabilities, makes the METLOG a flexible and cost-effective choice for a vast number of monitoring applications. The sophisticated data processor within the METLOG collects and formats the data from the connected sensors. The collected data is then time tagged with on board real-time clock and is then transmitted via RS232 or RS422 to a computer, Cable Modem or a Radio Modem. The METLOG has 6 analog input channels, 2 digital input channels and 2 RS232 input channels. Out of the 6 analog input channels, 3 of which are dedicated to the following specific sensors: Wind Direction, Air Temperature, Relative Humidity. The remaining three channels are provided for future expansion and can be used for any analog sensor with either a dc voltage or 4-20mA output, such as: Barometric Pressure, Wind Speed etc. One of the digital input channels is dedicated to Rainfall Sensor and the other digital input can be used for TTL output Wind Speed sensor. The RS232 input channels can be used for interfacing the METLOG with Ceilometer and Transmissometer. The METLOG automatically calculates and reports other parameters including dew point, maximum wind speed of a day, minimum Wind speed of the day, one hour rainfall and 24 hour rainfall, 1 minute average, 2 minute average, 10 minute average of all the parameters. Also METLOG calculates QNH value from QFE value from the pressure sensor. The METLOG considers temperature variations while calculating QNH value. The METLOG may be powered from either 220 VAC, 50 Hz or from 12 -26 VDC. The system also offers connectivity to solar panel options for remote installations and a battery for uninterruptible operation. The METLOG can transmit data via various telemetry devices including, VHF/UHF radio, and landline, which can be either RS-232 or RS-485 output. The RS-485 output enables cable connection to a PC over distance up to 1 Km without the requirement of an additional modem. The distance can be further increased using a suitable cable Modem. The METLOG can be configured and programmed using a simple on board 5 keys keyboard thus eliminating the use of any additional hand held device. Following functions can be programmed: Date and Time, Engineering Units (English or Metric), Connected Sensors, Time interval of Data Storage, Baud rate of each communication channel. The METLOG outputs data compatible with a suite of PC software that includes a graphic display, database archive and report generator. The software may be run on a stand alone PC or on a LAN. 7. PC Software : The software provided on the PC will compute the data and will provide the means of long-term data storage and retrieval. The met observer will be able to view the data in graphical format using the user-friendly PC software provided with the system. 8. Slave Displays for ATC & MBR : Slave displays will be provided in ATC and MBR for easy and fast parameter reading in digital format. These displays will indicate the sensor values of temperature, dew point / humidity, Wind speed, Wind Direction, pressure after every 6 seconds along with runway number. In addition to these values, slave display will also indicate the real time clock synchronized to the Data Acquisition System. The displays will also indicate 2 minutes average and 10 minute average values of wind speed and wind direction.

We have found a deep base in the market place amongst the airfield block system manufacturers located in India. We ply a wide spectrum of aircraft block system and automatic aircraft block system available in diverse models. Blocks in the Aircraft What are the Functions of These Blocks? The different blocks of the system are as explained below: 1) Weather Parameters : The different weather parameters to be broadcast using ATIS are monitored here. The monitoring is done on a continuous uninterrupted basis. The signals available from the sensors are properly conditioned and then sent to the ATC. 2) ATC & Computer : Here the weather parameters obtained from different sensors are checked for correctness on a computer terminal. It is this place where the data available is converted into a proper format and then using proper software is converted into voice message. The output voice message is also checked for correctness. The output is then sent to the transmitter where the data and voice are transmitted in proper format. Transmitter Circuit : 3) Modulation Circuit : In this block the voice data available from the PC is modulated using FM modulation. The main consideration for the FM modulation is that the reception of the voice data must be fully error free and free from noise. The aviation band wireless set is used for transmission. Receiver Circuit : 4) Aviation Wireless Set : This block is available in the aircraft that is going to land or take off. In this block the information broadcasted by the ATC is received and then demodulated. The demodulated data is the voice. 5) Microphone : The voice data available after demodulation of the received data is given to the microphone and this is available to the pilot as a listening aid for the ATIS information.

We have placed ourselves as paramount weather parameters manufacturers in India engrossed in manufacturing sophisticated range of weather parameter system and automatic weather parameter system which have shown their functional excellence in apt manner. Sequence of Transmitting the Weather Parameters : The following is an example of the sequence of information that should be used for all ATIS : ATIS ID : (Identifier) APCH : (approach information where an APP service is in operation) RWY : (states arrival runways, then departure runways) OPR INFO : (states runway operations such as PARL RWY OPS) WND : (direction and strength shown as ddd/ss) XW MAX : (shown as nn KTS on RWY nn) DW MAX : (shown as nn KTS RWY nn) VIS : (shown as nnnn or GT 10KM) CLD : (shown as coverage amount then altitude) TMP : (shown in degrees C) QNH : (shown as nnnn) Apart from this the ATIS can also be used to send certain information which might be of utmost use to the pilot like : 1) Availability of the runway. 2) Length of runway (if repairs are on). 3) Events like fire & birds flying near the runway, etc Reading the Weather Parameters Requires the Skill!! All numbers that contain whole hundreds and whole thousands must be transmitted by pronouncing each digit in number of hundreds or thousands followed by a word HUNDRED or THOUSAND. The other values are transmitted by pronouncing each digit separately. The time parameter is generally considered with reference to the GMT (Greenwich Meridian Time) in a four digit format. This is known as the Universal Coordinated Time (UTC). ZULU is used where UTC reference is used.

We are the eminent terminal weather station suppliers of India, manufacturing and supplying the vast gamut of automatic terminal weather station and automated terminal weather station which adhere to the Indian and international quality standards. Here are some salient features given below : Automatic Weather Station(AWS) : The following two main roles are indicated for the AWS : - REAL-TIME SYNOPTIC; where : . Real-time means the capability of transmitting the synoptic meteo messages, Remotely, to the central NMSs (National Meteo Services) with a typical Frequency update of one message every ten minutes; . A real-time synoptic role fully includes the other classes of AWSs like the: * Limited capability and agricultural ones, * climatological one But not the airport one; - REAL-TIME AIRPORT; where: . Real-time means the capability of transmitting: * The routine airport meteo messages, remotely, to the central NMSs with a Typical frequency update of one message every half an hour; * The special airport meteo messages, remotely, to the central NMSs Anytime pre-defined alarm criteria are met; * The airport meteo information, locally, to the ATC (Air Traffic control) Offices with a typical frequency update of one information every one Minute. . A real-time airport AWS is usually expanded to include also the capabilities of a real-time synoptic AWS.