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From Free Knowledge Base- The DUCK Project: information for everyone
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When purchasing 4DTV receivers and equipment, use caution so that you do not get taken advantage of. Here is some helpful information.* Know the Unit ID number schema. Correct unit ID numbers run in the rage 00-12EF-XXXX-XX to 00-12F5-XXXX-XX, always beginning with two zeros and a dash. * If you observe a unit ID such as 00-AE24-06FE-00 then be aware it is a bad ID number. A receiver with this ID will be unable to receive digital broadcasts because these units have a bad internal battery.* Obtain the digital Unit ID number from the seller. You can use that number when you contact any satellite provider to verify that it is a good Unit ID.* There is no such thing as a Motorola DSR-920. This is an older model made prior to Motorola acquiring General Instruments. The older model lacks capabilities available in the newer models and is worth less money.* There is no such thing as a General Instruments DSR-905 sidecar. Those were made by Motorola only.* There are model DSR-922's made by General Instruments and later made my Motorola. The later models say "Motorola" on them and are worth more because they are newer. If someone advertises "General Instruments / Motorola" they are being misleading. They probably have an older 922 made prior to the Motorola acquisition. The newer Motorola 922 models are worth more.* Be aware that some dishonest sellers have actually been caught switching the front door plate on a model DSR-922, replacing the one labeled General Instrument with one labeled Motorola so that they could get more money for the unit. This is illegal. Report the seller to the proper authorities.