What is the frequency range of satellite communication?

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why we use zener diode in switching action

1 Answers  

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Why is zener diode used as a voltage regulator?

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Define circuit switching?

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What are the different elements of MSC?

1 Answers   NSN,

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Define what is meant by fermi level in semiconductor? Where does the fermi level lie in an intrinsic semiconductor?

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Explain the term doping and its need.

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importance of defining tg or tf in selecting master and slave bts's?

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Q.1. What do you mean by FDMA? Explain in details. Q.2. What are active & passive elements in BTS? Q.3. Name the equipments required for 2+2+2. Q.4. What is the function of BB2F card? Q.5. What is the function of BOI card? Q.6. Which modulation we use in case of GPRS? Q.7. Which slot is reserved for GPRS? Q.8. What is the height of BTS? Q.9. What is the height of ESMA card? Q.10. How many maximum slots we can use in ESMA card? Q.11. We use PSWA card in which case? Q.12. We use PSWB card in which case? Q.13. How many types of Transmission cards are in Ultra BTS? Q.14. How many types of Transmission cards are in Flexi BTS? Q.15. What will happen if we change the polarity of microwave antenna? Q.16. What is the full form of ARFCN? Q.17. What is the function of TRAU? Q.18. Explain the structure of entire GSM. Q.19. Explain the configuration of 4+4+4. Q.20. Which type of connector we use in FIFA card? Q.21. Which type of connector we use at the end of GSM antenna/ Q.22. What are the different types of GSM antenna? Q.23. What do you mean by Splitter? Q.24. Convert the 16 W power into dBm. Q.25. Explain the different steps of Commissioning. Q.26. What do you mean by protection loop? Q.27. What is the correct way of weather proofing? Q.28. Can we use 7GC instead of 15GC? Q.29. What is the function of Duplexer? Q.30. What are the different elements of MSC? Q.31. Write the total description of Ultra Commissioning.

0 Answers   Nokia,

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what is difference between xdm-50/100/300/500/1000/2000 & all bg-20/40/30 in eci mux.

0 Answers   ECI Telecom,

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I am a fresher and i have done testing course from orbit institute hyd.can any1 say me whether it is necessary to do project in testing.if it is that which is best institute in hyd.can you please inform me if there is any job 4 freshers.thanxs

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what are differential gain and common-mode gain of a differential amplifier?

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