Help solving a mystery?

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  • ivtec
    Badcaps Legend
    • Dec 2008
    • 1967
    • USA
    #1

    Help solving a mystery?

    Hi guys; I have here a mystery to be solved.
    i have my Ota antenna connected to a 3 way splitter 1 output goes to an Apex RF OTA receiver and 2 output to an Insignia lcd tv and output 3 to 2 more lcd tv in other rooms .
    this set up has worked for many years,but lately the insignia connected to the 3 way splitter in order to receive OTA signal needs to have Apex receiver on , if i turn off Apex receiver there will be no signal on LCD Tuner,this is weird, what you make of it?
    Tags: None
    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA
      #2
      Re: Help solving a mystery?

      Possibly 3 way antenna is getting weak with over the air signals and the Apex 3 way splitter is creating RF that adds to the signal boost I would assume.
      Did I leave the soldering iron on?

        Comment

        • ivtec
          Badcaps Legend
          • Dec 2008
          • 1967
          • USA
          #3
          Re: Help solving a mystery?

          Originally posted by freakaftr8
          Possibly 3 way antenna is getting weak with over the air signals and the Apex 3 way splitter is creating RF that adds to the signal boost I would assume.
          Thanks freakaftr8; it's not a 3 way apex splitter but an APEX ota Receiver converter and it's connected to a 3 way splitter,

          Anyway i think i solved issue by removing a RF Amp that i had on the Apex OTA RF converter coaxial output to analog old TV and VCRs,weird but for now have Ota RF signal to LCD tv even if i turn off RF Apex converter receiver OFF.

            Comment

            • freakaftr8
              Badcaps Legend
              • Oct 2012
              • 3743
              • USA
              #4
              Re: Help solving a mystery?

              most of the time if these other devices are not on you may start something has changed but there is a lot of RF interference when you start splitting over the air signals. Especially other devices with Built-in tuners like VCR's and that such. Sometimes you may not see the RF interference on the screen but internally the oscillation duty cycles are changing within the signals being said to the 75ohm coax.

              I guess one could sum it up to what happens when a microwave is on near a television
              Last edited by freakaftr8; 01-23-2018, 12:01 PM.
              Did I leave the soldering iron on?

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Help solving a mystery?

                  Make sure antenna power is turned OFF on all of the TVs, if it is a supported feature.
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                    Comment

                    • ivtec
                      Badcaps Legend
                      • Dec 2008
                      • 1967
                      • USA
                      #6
                      Re: Help solving a mystery?

                      Originally posted by tom66
                      Make sure antenna power is turned OFF on all of the TVs, if it is a supported feature.
                      Thanks tom66; i don't think any of my old LCd tvs have any antenna power function.

                        Comment

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