The first thing you need to know when trying to understand the difference between the three technologies is the biology of a length of cable.
The outer jacket is basically there to look pretty and keep water out. The outer conductor, or braid, is designed to keep radio frequencies from interfering with the center conductor. The braid is functionally useless for grounding purposes when it comes to anything stronger than a radio frequency, EMP. The foil helps with EMP but it basically keeps the braid from ripping up the insulation when the cable flexes and bends.
All of this is designed to protect the center conductor. This thin strip of copper is your complete satellite dish communications system. Inside this wire is a whole new world.
Think of the below chart as a frequency cross-section of the center conductor. Legacy LNBF's send signals to the receivers in the 900-1450MHz range. Dishpro LNBFs use two frequency ranges at the same time, both the 900-1450 (for odd transponders) and the 1650-2150 range (for even transponders) to send signals to the receivers.
Legacy receivers send control signals to switches using a 22KHz tone, and use voltage switching between 13VDC (odd transponders) and 18VDC (even transponders) to control the selected LNBF. DishPro receivers are always running at 18VDC and use only the 22KHz data path to send control commands.
Dishpro Plus uses the 'stacked' technology to eliminate the need to run an extra wire for the second tuner in a dual-tuner receiver. With the use of a frequency splitter known as a DPP Separator, Dishpro Plus uses one tuner to control all switching. That tuner receives signals in the otherwise labeled 'Legacy' range. The second tuner uses the higher frequency band. A significant difference between DP and DPPlus is that EITHER band can contain either odd or even transponders from any available LNBF.
The different technologies also have different wire range limitations. Without power boosting via a power inserter, Legacy receivers are limited to 150 wire feet between receiver and LNBF. Dishpro/DPPlus receivers are limited to 200 feet.
What type of LNBF's and switches that are to be used depends on what type of receiver is being used.
Legacy receivers: Legacy LNBF's and switches OR Dishpro Plus LNBF's IF more than 1 receiver is connected. Can also be attached to a DPP44 switch.
DishPro receivers: All LNBF's and switches. DishPro receivers are backwards compatible with Legacy LNBF's and switches.
DishPro Plus Dual Tuners: Will work the same as DishPro, plus, when used with a DPPlus Separator, only one cable needs to be run between the receiver and the DPPlus switch or LNBF.
Legacy and Dishpro LNBF's and switches will work only if a separate wire is run to each tuner.
The outer jacket is basically there to look pretty and keep water out. The outer conductor, or braid, is designed to keep radio frequencies from interfering with the center conductor. The braid is functionally useless for grounding purposes when it comes to anything stronger than a radio frequency, EMP. The foil helps with EMP but it basically keeps the braid from ripping up the insulation when the cable flexes and bends.
All of this is designed to protect the center conductor. This thin strip of copper is your complete satellite dish communications system. Inside this wire is a whole new world.
Think of the below chart as a frequency cross-section of the center conductor. Legacy LNBF's send signals to the receivers in the 900-1450MHz range. Dishpro LNBFs use two frequency ranges at the same time, both the 900-1450 (for odd transponders) and the 1650-2150 range (for even transponders) to send signals to the receivers.
Legacy receivers send control signals to switches using a 22KHz tone, and use voltage switching between 13VDC (odd transponders) and 18VDC (even transponders) to control the selected LNBF. DishPro receivers are always running at 18VDC and use only the 22KHz data path to send control commands.
Dishpro Plus uses the 'stacked' technology to eliminate the need to run an extra wire for the second tuner in a dual-tuner receiver. With the use of a frequency splitter known as a DPP Separator, Dishpro Plus uses one tuner to control all switching. That tuner receives signals in the otherwise labeled 'Legacy' range. The second tuner uses the higher frequency band. A significant difference between DP and DPPlus is that EITHER band can contain either odd or even transponders from any available LNBF.
The different technologies also have different wire range limitations. Without power boosting via a power inserter, Legacy receivers are limited to 150 wire feet between receiver and LNBF. Dishpro/DPPlus receivers are limited to 200 feet.
What type of LNBF's and switches that are to be used depends on what type of receiver is being used.
Legacy receivers: Legacy LNBF's and switches OR Dishpro Plus LNBF's IF more than 1 receiver is connected. Can also be attached to a DPP44 switch.
DishPro receivers: All LNBF's and switches. DishPro receivers are backwards compatible with Legacy LNBF's and switches.
DishPro Plus Dual Tuners: Will work the same as DishPro, plus, when used with a DPPlus Separator, only one cable needs to be run between the receiver and the DPPlus switch or LNBF.
Legacy and Dishpro LNBF's and switches will work only if a separate wire is run to each tuner.
