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#1
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Modulators are great ways to enjoy your sets. The reasonably priced ones are Blonder-tongue BAVM Z series https://www.ebay.com/itm/30354393616...Cclp%3A2047675, but need to be on a channel that both your TV receives and one not being used in your area. The ones in that link you may consider are the channel 3 or 9, NOT channels 28 and 36, which are not UHF but cable super band. Connect a DT box, DVD, VCR to composite A-V inputs. On the output, a single wire is enough antenna to broadcast all over the house with any TV needing only a set of rabbit ears. I have a superband BAVM that was a cable channel but ALSO corresponds to UHF-45, which is perfect for my sets with UHF. I also b-cast 3-7-11 which are not active in this area, from my outbuilding that has the video sources, rack mounted modulators and antennas for each channel up in a loft. The reception in the house is good but requires adjusting the antenna to reduce snow just like analog days. Way more than if I was using a TV in that same outbuilding.
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"When resistors increase in value, they're worthless" -Dave G Last edited by DavGoodlin; 05-20-2021 at 02:43 PM. |
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#2
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Without seeing your set or schematic I would guess.......
The AM radio uses an internal ferrite loop stick antenna. Just like almost all AM radios. Sometimes they provide an input for a random length wire. FM starts just above Ch 6. On most sets you can fine tune the TV & start getting FM. To my knowledge olden days antennas were not designed to reject FM so everything can come in together. Newer antennas, at least the Jerrolds I used had break off elements to reject FM. This was done to better get Ch6 if it were fringe. Bottom line is use a 75 to 300 ohm adapter to hook up FM & TV. Be sure its rated to pass up to 800 MHZ. For AM to add an external ant is involved You would have to couple it to the loopstick by adding a winding. Hope that all helps. 73 Zeno ![]() LFOD ! |
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