Dish Network DPP44 Power Inserter

[ziggy1222]

I got a Dish Network Model DPP44 Power Inserter at a garage sale the other day for $.50. The power brick attached to it shows an output of 28.0V or 20.5V at 1.65A. I put a meter on it on the leg "To Switch" and it shows about 21.0V no load and 20.5V with a LNB loaded to it. It shows zero V on the leg "To receiver satellite in".

I wanted to use it as a power inserter to a Dual C feedhorn...it looks like it should be safe to put in line with a satellite receiver since it showed zero volts on the receiver leg. I am however concerned about the 20.5V power to an 18 volt LNB. Will I damage or shorten the LNB life with this extra 2.5-3.0 volts? Did Dish Network raise the voltage to compensate for longer coax runs...I would presume their LNB's only need 18V?

Also I know I'm missing the compatable Dish Network switch with this but how does the power brick 28.0V come into play here? Is it activated by a 22khz tone? Does the missing switch incorporate a voltage drop so that the LNB is only getting 18V from the power brick's 20.5V or 28V output?

 

[Magic Static]

The LNB may be rated for more than 18v. How do you plan to insert power to both LNBs with this unit? And switch between the two?

 

[ziggy1222]

I've got a Trunkline 13/18V switch with like 16 outlets. At the present time one of the LNB's gets 18V and the other one gets 13V. If I put this power inserter on the LNB side of the Trunkline switch the 13V LNB would increase to 20.5V.

I could go another way on this...I've actually now have two of these DPP44's. I could use one for each LNB and then put a standard 13/18V switch between the 2 DPP44's and the satellite receiver(s).

 

[Magic Static]

Well then you could experiment and add the voltage to the one side and see if there is an improvement. It may not warrant adding such a big powerbrick or two to the household background electrical load. I'm starting to see a tremendous load on the household when everything is "OFF".
Too many power transformers plugged in at all times.