hey all:)

I've begun my first OTA install and am hung up on a splitter issue.

Can I run coax from an antenna mounted pre-amp (cm7777), to a 2 way splitter, and then down to TV's in different rooms, one of which will have the pre-amp power supply. I have the 'Channel Plus CP2512 DC & IR Passing 2-way Splitter/Combiner' but can't tell if it's one port passing or two, and don't know which I'd need anyway.

thanks

Here is a 4-way splitter with DC pass-though on one port. I have one along with a diplexer as part of my DTV system.

http://www.audiovox.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=10001&productId=14274&langId=-1

thanks sptrout, I took a look at yours. I guess what I don't know--is whether or not my splitter is both port pass through, and if so will it pass the dc power from one of the two ports to the other port. In other words will that power also go to the other room and cause problems there, when the power supply is sending the dc to the pre-amp.

If so, then I need to get a 2 way splitter with only a single power pass to go to only the pre-amp.

Or is this just an altogether bad way to get 2 rooms up using my pre-amp.:confused:

I am sorry, I did not read your first post very well; I thought that you needed a splitter, not that you already had the 2512. From what little I could find about the 2512 it seems to be able to pass DC, but nothing that I could find says if it just passes DC through just one port (from TV port #1 to antenna port, and not back down TV port #2).

The Trek model that I linked you to only passes DC to one specfic port, which would be the preferred method (no reason to send DC to all ports). If the 2512 is just a plain resistive splitter then there will be DC on all three ports, but that may not be a problem. Did you receive any documentation with the 2512 that would say which port(s) DC would be passed through?

Sorry, not much help.

You can use a multimeter. Check for voltage. If necessary, install a DCBlock.

http://www.summitsource.com/dc-voltage-block-connector-adapter-75-ohm-ftype-winegard-vb1000-voltage-block-female-to-male-1-pack-coaxial-coupler-for-ir-over-coax-cable-systems-audio-video-acdc-volt-blocking-adapter-connector-part-vb1000-p-7062.html

The Trek model that I linked you to only passes DC to one specfic port, which would be the preferred method (no reason to send DC to all ports). If the 2512 is just a plain resistive splitter then there will be DC on all three ports, but that may not be a problem. Did you receive any documentation with the 2512 that would say which port(s) DC would be passed through?


The only thing I can find is that it says "Passes DC IR signals on the coax".
So that's not really clear. Got no documentation and it's not labeled on the splitter itself.

Might be best just to pick one up that says for one port only, like yours. Then I assume it's ok to put it between the pre-amp and the power supply using that port for the amp line. Sound about right?

thanks

thanks sptrout, I took a look at yours. I guess what I don't know--is whether or not my splitter is both port pass through, and if so will it pass the dc power from one of the two ports to the other port. In other words will that power also go to the other room and cause problems there, when the power supply is sending the dc to the pre-amp.

If so, then I need to get a 2 way splitter with only a single power pass to go to only the pre-amp.

Or is this just an altogether bad way to get 2 rooms up using my pre-amp.:confused:
The 2512 passes DC on all ports (as do the other Channel Plus splitters). Doesn't say whether it is diode-steered or not. The safest thing would be to do as Ratman suggested and install a D.C. block on the leg you don't want D.C. to go down.

Or, you could get a splitter that passes power only on 1 port.

thanks for the help guys.:) I'll either block mine or replace it with a single pass port.