Hello.

My place was remodelled recently. I noticed if the room's new glass window is closed, my DB2 bowtie antenna sometimes can't get a signal lock or get low signals.

It is like 9 PM PST hour right now, and I can't get anything from KABC7 (not even a signal lock) with my room's window closed. I noticed if I leave over halfway opened (slide left), then I can get my signal (60%-70%). 1/4th opened is like halfway (30%).

I did some experiments with analog feeds with the same DB2 bowtie antenna (splitter). I do not see any quality change on KABC7.

Is there a way to improve this beside moving it outside which I can't do? I am located on the second floor (upstair). :( Most transmitters are 323-324 degrees heading on compass and under 20 miles (KABC7 is this direction). Others are 79 and 61 degrees at 38 and 54 miles (don't care for these) according to antennaweb and tvfool.

Or do I have to watch digital KABC7 with my window opened no matter what? :(

Thank you in advance. :)

Anything (including glass) added between the transmitter and the antenna will usually negatively affect the signals. The analog signal is probably less affected because it's VHF vs. the usually UHF DT version which is much more influenced by things in the line of sight.

20 miles is already iffy with an indoor antenna - you'll either need to move it around to see if you can find a better spot, try another antenna or move it outside somehow. If KABC moves to VHF after Feb you might get better signals then.

Sounds like your window has a metal-based tint or other coating on the glass. You'll have to move the antenna to find another location that works, either outside, in the attic, or perhaps pointed through the wall. However, going through a wall is likely to have the same problem if the exterior is brick, stucco, or aluminum siding.

Sounds like your window has a metal-based tint or other coating on the glass. You'll have to move the antenna to find another location that works, either outside, in the attic, or perhaps pointed through the wall. However, going through a wall is likely to have the same problem if the exterior is brick, stucco, or aluminum siding.
It has that blueish and greenish colors in the glass windows. Walls are wooden. I don't know if roof matters (brick to avoid fires that happen once in a while during bad weathers).

However, I tried moving my antenna farther away from the window and pointing at the wall instead of the closed window. Much better. now, I can get 70%-80% range for KABC7 Even my analog channels were better (KCBS2 and KNBC are still fussy, but KTLA 5 got really clear unlike before). I hope this is a perfect spot since I can't go farther anymore (coax cables aren't long enough from my computer and 15 years old 21" CRT TV). Height remains the same too.