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Isolator/Circulator needed for Satellite Television - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Isolator/Circulator needed for Satellite Television
Posted: Mon Aug 29, 2005 10:19 pm 
I have a Satellite receiver that pickes up a few channels from overseas. I put a 1x4 splitter on its output to route this signal into 4 rooms. The standard television sets in other rooms handle this signal perfectly. But one room has a "TV BOX" used for routing a television signal to a computer monitor, in this case a flat screen LCD. This line seems to return a rogue signal to the satellite receiver that somehow messes up the master signal going out from from the receiver, resulting in all 4 split legs performing poorly. Can I put an rf isolater or circulator on the offending line to improve overall system performance? Recommendations?


 
  
 
 Post subject:
Posted: Fri Sep 16, 2005 5:29 pm 
I would try to an attenuator first. Try a 3 or 6 dB. Or an amplifier and attenuators.

If you have an isolator that work at those frequencies of course you can try that too.

Be sure to terminate the unused ports.


 
  
 
 Post subject:
Posted: Tue Sep 20, 2005 9:02 am 
If your coming out of the receiver then you are low frequencies. You can try placing an amplifier on the line (Radio shack cells them) to isolate the path. Most amplifiers will gve you as much if not better isolation than an isolator.




Posted  11/12/2012
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