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Place the indoor RCA antenna in/at the inside of the of the patio window - door window.
Aim the RCA indoor type antenna at about 348 degree magnetic compass direction.
Here is how to aim indoor and outdoor type antennas.
www.kyes.com/antenna/pointing/pointing.html
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Can also Test reception out on the patio with the RCA indoor type antenna.
The RCA indoor type antenna can be installed out on the patio.
If reception is good on the patio and you will like to continue reception with the indoor type antenna out on the patio , the indoor type antenna is not designed to deal well with weather/water and will quickly corrode.
Put the RCA indoor type antenna in a big plastic bag out on the patio.
A plastic garment bag is big. Or can use some other big plastic bag.
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Can also install a ,
www.antennacraft.net , HBU11K antenna , or , AC9 , antenna out on the patio.
Aim antennas at about 348 degree magnetic compass direction.
You can drill a hole through the wall to get the coax from the patio into the apartment.
Or
www.hollandelectronics.com has a Flat Coax that will install as a pass through in a window or door.
Model number , 144823
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Also , Digital Tuners can develop -Digital Glitches- that are not cleared out with simple channel scans.
To clear tuner do Double Rescan.
www.wchstv.com/DoubleReScanAlert.pdf