Answer the following 9 questions below. Questions 2, 3, 4, and 6 may be answer u
ID: 3754354 • Letter: A
Question
Answer the following 9 questions below.
Questions 2, 3, 4, and 6 may be answer using one or two words. For the other questions please either use a table, show an image, or answer in complete sentences.
1. What are the frequency ranges of EHF, HF, LF, MF, SHF, UHF, VHF, VLF? Please make a table and place them in order from lowest to highest.
2. When you use a GPS, what exact frequency in Hz are you using?
3. Which 2 U.S. organizations oversee the management of radio spectrum licensing?
4. Which U.N. agency, formerly known as CCITT, oversees regulations of telegraph, telephone, and radio and satellite communication services on a global basis?
5. Would you prefer to use a lower frequency band or a higher frequency band? Please explain your answer.
6. What GSM bands including 3G and 4G does New Zealand use?
7. Are WiFi and Super WiFi the same technology? Explain your answer.
8. Where is the closest Verizon cellular tower in San Francisco? Go to http://www.cellreception.com/ and search for towers in San Francisco. Then check just Verizon. What is the name and address of their San Francisco tower closest to the Bay Bridge?
9. Explain what are SID, MIN, ESN, MTSO, and PSTN.
Explanation / Answer
1.
2.
When using GPS we are using two frequencies - 1575.42 MHz and a second at 1227.60 MHz both belongs to UHF (Ultra high frequency) frequency band
3.
Federal Communications Commission (FCC) and National Telecommunications and Information Administration (NTIA)
4.
ITU-T (Telecommunication Standardization Sector of the International Telecommunications). It is located in Geneva, Switzerland.
5
Lower frequency band are advantageous over higher frequency band with respect to penetration power. Lower frequency band have better penetration, meaning they pass through objects such as walls with less tempering.
The other reason is with respect to distance covered by these bands.Higher frequency bands will travel lesser distance than signals sent on a lower frequency band because of thier wavelengths. Higher you go on the frequency band, the lower will be the wavelength.
Band Name Abbreviation Frequency Very low frequency VLF 3–30 kHz low frequency LF 30–300 kHz medium frequency MF 300–3,000 kHz high frequency HF 3–30 MHz Very high frequency VHF 30–300 MHz Ultra high frequency UHF 300–3,000 MHz Super high frequency SHF 3–30 GHz Extremely high frequency EHF 30–300 GHz