Greetings Comenius,
Welcome to the forum. You are no doubt experiencing two things, the first, the challenges of an attic install and second, an antenna that is not fully ideal for your conditions.
First, as teleview pointed out, reliable reception has the best chance with an antenna outdoors with as few obstructions as possible between receiving antenna and the transmitter. Attic installs are fraught with wildcards due to making the TV signals pass through solid materials to get to your antenna. Even with excellent signals, you can still get drop outs in these scenarios. Further complicating matters is your 1 and 2 edge signals. Since you don't have line of sight, giving your antenna every chance to receive these signals that are being subjected to terrain puts you at a disadvantage.
If the attic install is your intent, let's set some expectations. The red weaker signals are going to be largely hit and miss, trending more towards miss. Second, your moderate signals starting about 25-20db signal strength and down may be more erratic and/or not show up at all. This is due to passing through solid material. You may have erratic problems with strong signals too.
GroundUrMast's suggestion of adding VHF capability is spot on. Since the CS2V is a UHF design, you need to add H-VHF (7-13) to target KGO RF 7 and KNTV RF 12 for improved reception. I like the idea of the Y5-7-13 if you can swing it. Amazon has it for 13 bucks at the moment. Test with and without preamp to see which performance is better.
As to KTSF and KAXT, you want those signals, go on your roof with the antenna. That's about it. Why? Signal strengths are in the upper teens db to approaching 10 db. There just isn't enough signal to "punch" through your roof to get to the CS2V.
At this point, I just want to have reasonable expectations of performance. For the asthetic appeal, comes a trade off.
Edit: I would not have recommended the RCA ANT751 to you. I am not surprised it didn't perform as well as the CS2V for you. The 751, while a great little local to suburban antenna, it does best in line of sight applications with excellent to moderate signal strengths. Your attic install combined with 1 and 2 edge terrain issues on the signals was asking too much of it as you found out. For your situation, you needed more horsepower.
Good luck!
SS
Quote:
Originally Posted by Comenius
Hello Folks,
NBC (VHF 11) is weird, and the station I'd most like to improve. Sometimes it comes in clear as a bell, sometimes with a lot of stuttering and dropouts, and sometimes it's completely gone. Without the FM Trap this station doesn't come in at all. Anything I can do to improve its reliability?
Also, there are two UHF stations that TV Fool says I should receive that don't show up at all during a channel scan, KTSF (UHF 27) and KAXT (UHF 42). While I'm not hugely attached to getting either of these, are there any thoughts on how I can get them? Or any of the other stations I'm not currently receiving?
I tried the ANT751R \
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