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4DTV Dish and Receiver configuration examples:Another good reason to get as large a dish as possible is too eliminate interference from other satellites in space that are near the one you are attempting to receive a signal from. It sounds contrary, but it is true that the larger the dish is the less of the sky it sees, it is more focused on a specific point in the sky. There are more satellites in orbit now than ever before, and some are only 2 degrees apart. To stop adjacent satellite interference the dish reflector should be, at a minimum, 8 1/2 ft.1. DSR922 receiver on a 10ft motorized dish with Chapparell dual lnb Corotor ll. <big>4DTV Dish and Receiver configuration example:<BR>1. DSR922 receiver on a 10ft motorized dish with a Chaparral Corotor II+ Dual Band Feedhorn (''a C-band and ku-band lnb'')</big>=== About Used Receivers ===When the battery in the GI or Motorola 4DTV receiver dies then the receiver will no longer function. The battery has a finite life. It is important to know the DOM for your receiver. This can be determined by analysis of the serial number. The date is embedded in the unit serial number for all DSR920 and DSR922 receivers.The 7th digit is the year of manufacture. "4" would mean 2004. The 8th, 9th and 10 digits indicate the Julian day on which the unit was manufactured in that year. Julian days are the numerical day of the year and run from 1 through 365 (or 366 in leap years). If the number was 031, that would mean Jan 31. If the number was 053, that would mean Feb 22, and so on.=== 4DTV Equipment Checklist ===* DSR-922 with a VCRS module* HD-220 HD Decoder* 8' Solid or 10' Mesh minimum dish size == Capability ==The 4dtv will get you both analog and digital feeds, this unit has everthing built in, a analog tuner for free analog feeds, dish positioner, DCII fta capable and DCII subscription, If you want to subscribe to analog you must get a VCII+ board, this board slides into the 4dtv, and is not another box taking up room, now if you want HD, then you must get the HDD 200, and this decoder connects to the 4dtv, to produce the picture, star chioce and many cable companies used the HDD 200 also , but most places have come out with a all in one unit now. The 4dtv will give you many free channels, but most are analog wildfeeds, some in the DCII format, but for those ones you must sub to something for them to be open, if you want more free programming from around the world, you can get a cheap DVB unit like a Pansat 2500a, or a high price unit that can catch some HD feeds, like a INT912, these boxes will work as a slave to the 4dtv, you will move the dish and polarity with the 4d and change channels and scan with the DVB box. == Big Dish Programming Providers ==For owners of a Big Dish, there are programming providers that offer al la carte and packaged channels for both analog C-band and C-band digital, known as [[Motorola 4DTV Satellite Technology|4DTV]].See the <big>[[DirecTV_and_Dish_Net_Alternatives_for_Satellite_Television_Service#Big Dish Programming Providers|Big Dish Programming Providers section]]</big> on the DirecTV and Dish Net Alternatives for Satellite Television section of this [[WiKi]] for more details.