Originally Posted by adream8
Could use some help.
I posted a while back. Quoted my original post here. Read it if you like.
Long and short of it:
I get these stations in only occasionally and weakly:
28 KCET PBS
34 KMEX Univision (Bounce, Justice)
46 KFTR UniMás (getTV, Escape, Grit, Quest)
50 KOCE PBS SoCal
54 KAZA (MeTV, Decades)
58 KLCS PBS
Because I do occasionally get them in, that leads me to believe that I may be able to get them in consistently if I strengthened their signals. I'm trying to figured out how to do this without overdriving and blowing out the stronger signals I already get in solidly.
Most all signals coming from same peak on Mt. Wilson.
RCA ANT751E Yagi antenna on the roof pointed right at it (64*).
Using the newer dual tuner AirTV black box as tuner.
Tried Winegard LNA-200 preamp, but I always scan less channels when it's connected, so it doesn't seem to be helping. I receive more channels without it.
My antenna has about a 6db gain on it's own, and I'm running a 100ft RG6 copper coated coax (but I'm going to switch to a 100ft solid copper coax because I read that it will carry the preamp power better), so I probably lose roughly that same 6db over the length of the cable.
From my TV Fool chart, it looks like most of my problem channels are in the 0-8db NM range.
Should I try..
1) a 6-12db attenuator with the LNA-200 preamp, since it's pushing about a 16db gain which is probably too much?
2) another preamp that is lower gain or adjustable?
3) something else?
I feel like I maybe only need about 6-12db more at most to get those weaker signals, but it seems like most non-variable preamps available push much more than this.
I'm new to this, so insights are appreciated. Thanks again! - Anthony
Are you certain all the stations you are trying to get are on Mt. Wilson. I seem to remember many of those stations being on Mt. Harvard (KAZA for one, I think), just down the road from Mt. Wilson, but Mt. Harvard is at a lower elevation and from your location, it could be in the shadow of Mt. Wilson. From my local I am due south, so I have enough heigth to receive all of Wilson and Harvard at their repective elevations, but Mt. Harvard transmitters are cutting close to being in the shadow of some hills just noth of me.
FWIW, my humble opinion: for your OTA antennas HEIGHTH
is almost EVERYTHING
. A great many problems are solved with your OTA antenna being as HIGH as possible. I don't know how practical that is for you to do, as in home owner or apartment dweller, and the higher you go, the more need for securing the antenna.
I do have a back-up solution if you are willing since you already know about Slingbox: if you can't get those channels you really love using your OTA antenna, consider putting a Slingbox at a family or freinds's location and either accessing their cable or satellite client device (offer to pay the monthly charge for such a device IF you want it dedicated to your exclusive use, usually like $7 per month) for viewing those channels you can't get, but really want. Or you could even install a TiVo (like the one-time, lower total price that includes lifetime service TiVo OTA
box) connected to an OTA antenna (if they have one) at no cost to them that will allow you to view the OTA chanels you want. If you do that, I would recommend viewing on the Fire TV that has the free SlingPlayer App because it is more straight forward and requires no mobile device to initiate and control like the lousy Roku solution. SlingPlayer on Fire TV is the best and easist way to view a Slingbox. You may already know, but I would stick to the Slingbox 500 or M2 because they were the last models and will work with the SlingPlayer on desktop, as well.
Let us know of your solutions. Good luck.