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Jul 21st, 2009 at 9:19am
Cheap meters normally have two coax conections, one for the LNB and one for the receiver.
 When in use, the receiver provides DC power (and 22kHz tone) to the LNB via the meter.
The meter may incorporate a small amplifier for the meter scale and audio indication; if so the power for this circuitry is abstracted from the main DC supply from the receiver to the LNB.
Expensive meters may incorporate their own rechargeable battery power supply, in which case the main indoor receiver is not required and antenna pointing may be done with the antenna, LNB and meter only. The meter battery power provides the LNB with +19 or +13 volts and switchable 22kHz tone.
 If you need advice on Satellite TV, multi feed, dual, twin, quad LNBs and TV distribution switches, splitters etc then a satellite TV forum might be better.
Best regards, Eric.
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