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Discussion Starter · #1 ·
I just upgraded from DP34 to DP44 when I added DishNetwork's HDTV package.

Because Dish's HD package do not have some of the local HD channels availables here in Southern California, I decided to put up a OTA antenna and use a diplexer to chare one of the coax line from my roof to the DP44.

I think I did the installation correctly in pointing the OTA antenna and placing the 2 diplexers at the right places, because both my Vip211 (HD) and DP311 receiver can still get the programming from the satellite that is sharing the coax line with the OTA antenna.

However, I cannot get any signal from the OTA antanna through the ANT side of the diplexer.

I am looking assistance on diagnosing the problem. After doing some research on the web, I know one possible cause is that I am using non-approved diplexer (cheap RCA) instaed of the approved ones for DP44 (Holland DPD2).

I want to know if others on this board know of other similar experiences and possible solutions.


Thanks for any help,

Pat



P.S., I am pretty sure I am pointing the OTA antenna in the right direction for HD because I live on the foothill right below the HD transmission tower (I can even see the towers on the rare non-smoggy southern California days).

I can pick HD programming with an cheapo indoor antenna but my DP44 is located in a wiring closet with too much interferences, that's why I installed the OTA antenna.
 

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Discussion Starter · #4 ·
I am use 2 diplexers, one on my roof to combine the OTA antenna and satellite signals, and another diplexer just before DR44 to split the signal with the Sat port of the diplexer connect to DP44.
 

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Discussion Starter · #7 ·
Thanks guys for all of your input.

I found information that the only approved diplxer for DishNetowrk's DP44 is Holland Electronics's DPD2. (I used the off-the-shelf RCA diplexer.)

When I called Holland, I was told it's because DP44 is amplified and sends power out and can fry other brands' diplexer, and Holland's diplexer DPD2 is specifically designed to withstand that.

Can you guys tell me if this make sense. (I check the Dish Netowork document and am sure I coneect everything correctly).

Thanks.
 
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