Direct TV HD Satellite Power Requirements

DirecTV Satellite Dish

DIRECTV HDTV receivers decode and convert digital satellite signal into television programming. In most cases, the satellite receiver sends power to the satellite dish and powers the dish. In order for DIRECTV satellite broadcasting to be viewed on the television, the satellite dish must properly receive two types of signal, DC voltage to power the LNB and a properly tuned satellite signal.

Decoding Satellite Television Signal

DIRECTV receives high-definition satellite broadcasting from the satellite via a bandwidth which is much more finely tuned than previous generations of satellite broadcasting. The satellite dish must be tuned within one half of 1° to the peak signal strength in order to properly receive and decode high-definition signal.

First Generation HD Satellite TV Dishes

The DIRECTV satellite receiver sends an alternating 13 volt and 18 volt current through the coaxial cable to the satellite dish. This alternating current provides the power necessary to operate the standard generation DIRECTV high definition satellite LNB, or 'eyes' on the end of the dish's arm.

Newest Generation HD Satellite Television Dishes

DIRECTV 's newest generation satellite dish requires a 21 volt or in some cases a 28 volt current for proper operation. In this case, the DIRECTV satellite installer will insert a power supply in the signal delivery system to provide the proper current for the DIRECTV LNB.

References

• DIRECTV HD receivers
• DIRECTV receiver specification

Resources

• DIRECTV HD dish specification