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A Presentation on summer training

atBharat Electronics Limited(Kotdwara)

Prepared By:

NAME:- SUMIT KUMAR

ROLL NO:- 51

BRANCH:- ELECTRONICS &COMMUNICATION ENGG.

G. B. PANT ENGG. COLLEGE

PAURI GARHWAL (UTTARAKHAND)

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Contents

• Introduction to Bharat electronics

• Units of BEL

• Products of BEL

• Study of VPS

• Features

• Advantages of VPS

• Disadvatages of VPS

• Applications

• Conclusion

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Introduction to Bharat electronics

set up at Bangalore,under the Ministry of Defence in 1954.

BEL Bangalore is the coorporate office

9 units

350 product

R&D lab

multi-product, multi-unit and multi-technology

NAVARATNA PSU company

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Products of BEL

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Participations of BEL

Study of Versetile portable system

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The secure UHF handheld radio

LUP 291:----(Low Power, UHF& Portable)

Lightweight and portable trans-receiver

used for ground communication

operates in the UHF frequency band of 403 to 470 MHz .

The radio provides for clear & secure voice communication

Channel spacing 12.5/25 khz

Designed by PANCHKULA plant

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Pictures of Versetile portable system

Configuration details

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TOP VIEW OF VPS

T=TONE MODE C=CARRIER MODE

S=SECURE MODE M=MENUAL SLECTION

P=PROGRMMING MODE B=BITE MODE

N2=CLONE MODE E=ERASEMODE

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Features

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Controling

Battery

Antenna

Temperature range (-30*c<T<50*c )

Voltage range 1<V<15

Received field strength Eo=300*√P

d

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Description of VPS

Clear and secure modes of operation

150Hz tone or carrier operation

Built-in high grade digital secrecy

Secure key selection (32 keys)

Manual key entry (key 33)

Selective call facility

32 Preset channel (4 banks of 8 channel each )

1 Manual channel

Preset & programming facility

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How it works

Old VPS New VPS

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HT BASIC SOFTWARE

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Modes to programme VPS

VPS—VPS (CLONING)

PC—VPS

PC—FILLGUN—VPS

LUP

• Higher Frequencies

• shorter wavelength

• small antenna

• Better Quality

• Less Range

LVP

• Lower Frequencies

• greater wavelength then uhf

• Larger then uhf

• Lower Quality

• More Range

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LUP versus LVP

YEARS

Production chart

Light weight

No need of repeater for communication

Security

Easy to use

Portable

Loudspeaker facility

Short length of the radio antenna

ON/OFF facility18

Advantages

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Disadvantage

Limited broadcast range

Power Needs

Only one conversation at a time can

occur on each channel

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Applications of VPS

Uses by Defence in communication

Railway department

Police department

Fire department

Traffic police department

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CONCLUSION

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QUERIES