How does an active antenna work?

Related questions

1. Which antenna is frequency independent?
2. Can any car get Sirius radio?
3. Can satellite phones be tracked?
4. How accurate is differential GPS?
5. What is the difference between GPS and GPRS?
6. Do I need an antenna for Sirius?
7. Do I need a special antenna for Sirius radio?
8. Can GPS tell elevation?
9. What is a good Pdop?
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Tags

1. #includes
2. #amplifier
3. #integrated
4. #allows
5. #active
6. #antenna
7. #passive
8. #onboard
9. #signal
10. #remote
11. #amplification
12. #simply
13. #antennas
14. #boosts
15. #stages
16. #picked
17. #cable
18. #longer
19. #receive