Diplexing VIP622 TV2 output w/OTA output
- Thread starter leegart
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To combine OTA and TV2 output you'll need a pair of splitters and then the diplexers. Having said I don't recommend combining OTA and TV2 output because the frequencies overlap and it will probably not work for you. You will also be broadcasting TV2 through your antenna and that's against FCC regulations.
You could get a filter to avoid interference from/with OTA:
http://www.smarthome.com/7822b.html
Different filters are available tuned for different frequencies.
Why would a diplexer be needed? Wouldn't splitter/combiners do the job? I thought diplexers are high bandwidth splitters tuned for satellite frequencies.
http://www.smarthome.com/7822b.html
Different filters are available tuned for different frequencies.
Why would a diplexer be needed? Wouldn't splitter/combiners do the job? I thought diplexers are high bandwidth splitters tuned for satellite frequencies.
I have one coax run through a wall to a TV in a different room than the VIP 622. The TV in the other room has a VIP 211. I was hoping to have the output from TV2 on the 622 (for purposes of viewing the DVR) go through the wall on the same coax as an output from an OTA antenna which would then hopefully be separated from the VIP 622 output and fed into the VIP211 antenna input.
I thought the diplexers might combine and separate the signals if the OTA antenna signal doesn't interfere with the signal from the VIP622 TV2 coax output. It sounds like it might though. A filter might help after the signals are split though if it only filters out one of the signals.
Thanks for the responses!!!
I thought the diplexers might combine and separate the signals if the OTA antenna signal doesn't interfere with the signal from the VIP622 TV2 coax output. It sounds like it might though. A filter might help after the signals are split though if it only filters out one of the signals.
Thanks for the responses!!!
It can be done... I have a single coax carrying the Sat feeds, OTA signal and the TV2 backfeed. See attached drawing. No interference between the OTA antenna signal and the backfeed TV2 signal from the 622 (or 942).
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"Why would a diplexer be needed? Wouldn't splitter/combiners do the job? I thought diplexers are high bandwidth splitters tuned for satellite frequencies."
Diplexers allow you to combine satellite signals (upper frequencies) with CATV/UHF/VHF signals (lower frequencies). Since he wants satellite and OTA and TV2 on the same cable, diplexers are needed.
Diplexers allow you to combine satellite signals (upper frequencies) with CATV/UHF/VHF signals (lower frequencies). Since he wants satellite and OTA and TV2 on the same cable, diplexers are needed.
His message is not completely clear. But I thought all he wants to combine is OTA and the 622 Backfeed (not satellite signals).
If you need a filter it would be on the cable connected directly to the OTA antenna. Let's say you have the 622 transmitting on channel 60. You get a filter that blocks 60.
This keeps any OTA on that frequency from interfereing with the channel 60 coming off the 622. It also blocks the 60 coming off the 622 from getting to the OTA antenna (and being broadcast to your next door neighbors who might not want to see your porn - hmmm, or they might).
The Solution
You have it right. I ended up putting in an A/B switch before the coax that went through the wall and living with having to switch when I want to watch the DVR. I didn't want to have to go through the trouble of having to find a band pass filter for the output of the VIP-622 on the coax feed with the OTA antenna.
Thanks for the info and suggestions. You guys are great!
You have it right. I ended up putting in an A/B switch before the coax that went through the wall and living with having to switch when I want to watch the DVR. I didn't want to have to go through the trouble of having to find a band pass filter for the output of the VIP-622 on the coax feed with the OTA antenna.
Thanks for the info and suggestions. You guys are great!
A similar solution
I also needed to mix TV2 out with an antenna and after a few weeks of research this is what I came up with. The solution is similar to some of the responses on this thread and I thought it might be useful to others. Additionally, I did not want to run a separate cable from my antenna if possible so I have a solution where the antenna and dish are diplexed and the TV2 and antenna are combined as well - all through the same cable network. I did not have to run any additional wiring for this. The RF filter is optional and should be used if you can't find any clear channels to broadcast TV2 or if you are concerned with broadcasting a signal through your antenna. I found that it added a little too much resistance to the antenna line so I removed it.
I also needed to mix TV2 out with an antenna and after a few weeks of research this is what I came up with. The solution is similar to some of the responses on this thread and I thought it might be useful to others. Additionally, I did not want to run a separate cable from my antenna if possible so I have a solution where the antenna and dish are diplexed and the TV2 and antenna are combined as well - all through the same cable network. I did not have to run any additional wiring for this. The RF filter is optional and should be used if you can't find any clear channels to broadcast TV2 or if you are concerned with broadcasting a signal through your antenna. I found that it added a little too much resistance to the antenna line so I removed it.
Will this setup work connecting directly to the ANT-in on the tv or does it have to be split for OTA and the 622 backfeed into two inputs? My tv only has one Ant-in so therein lies the problem if so. I am only interested in the two feeds(Sat not needed).
Interesting device. Do you combine with OTA or cable and if cable which frequency do you use for the TV 2 signal.
Thanks Steven. This looks quite elaborate and a litle pricey. Does anyone know of any other method that works?
You can try the ones mentioned here but $45 plus tax and shipping does not sound that bad to me.
I was just wondering if using the split/comb merging the OTA cable and the 622 TV2 out cable and attaching that one cable to the tv would do the same thing. What would the TV set do with that? Do you know?
If you are not using a TV2 backfeed, then everything is much easier. You can leave out the diplexers at the cable box and run the line through intact to the receiver. You just need 1 diplexer at the sat/antenna and 1 diplexer at the receiver - that's it. It's not terribly expensive either - you can get adequate diplexers for 5 bucks a piece online so for the basic setup you are looking at is $10.
For the simple layout you can get away with using cheapy components. However, if you plan to use TV2 backfeed you will need to get much better quality components or else you will introduce too much resistance into the line. Plan to spend more like $10 per component and look for diplexers with insertion loss of 1dB and splitters with 3.5dB loss.
The RF filter is really an optional component and is only really necessary if you are worried about breaking FCC regulations and transmitting signals out your antenna to your neighbors.
Sorry - misread you question the first time. Yes you can combine OTA signals and 622 backfeed using a simple UHF splitter. Just make sure to set up your 622 to broadcast the TV2 signal on a completely clean unused channel - in other words a channel that has absolutely no reception interference from the antenna. You will have to experiment with different channels to find one without interference but typically the highest channels are clear.
To truly clear a channel for broadcast you can use an RF band pass filter but that is usually overkill.
