Originally Posted by mwl001
Thanks TomCat -- my thoughts with the hi VHF are, clearly in my attic I have trouble pulling in only those signals, so if I go with something OTHER than the 4228, what level of improvement do those tests on HDTVprimer give me? All I've used besides the Silver Sensor were a couple of loop/rabbit ear $15 cheap indoor antennas, and with my old TV I was even able to pick up channel 6 PBS out of Tucson most of the time. So the signals are there, and I'm pretty sure if there was some way I could stick an indoor antenna outside I could probably get everything no problem. HOWEVER, as you noted correctly I would only want to do an outdoor install once, and also the better antenna I get the better chance I have that the attic install will be successful, which I think both lead me back to the 4228. However based on this if you think there's a cheaper alternative or two that could work based on my situation I would be willing to give one a try in my attic.
You seem to be thinking this through properly.
The fact that signals are marginal with small UHF antennae makes me suspect that it would not take much improvement to solve your issues. If you are at 14 miles and are relatively unblocked for LOS, often an attic setup will be just fine. It could even be that ANY antenna also capable of Hi-V would solve these issues. I would avoid a yagi, because the booms are pretty big, and they are difficult to put in an attic.
But improvements are basically on a sliding scale. Putting a CM4228 up on the roof is somewhat at the other end of the scale, and I don't think you really need that.
The problem is that you never really will know what will actually work until you try it, because every location is different, especially in how much multipath there is. You can make general guesses about how deep you want to dig, which is sort of what I am trying to lead you to, or you can just go whole hog. Going whole hog has the best odds of success, but everyone has a budget and everyone has only so much time to devote to fixing this issue, so all of that is on that sliding scale too. But then the more aggressive you are in attacking this problem and the more assets you direct at it, the better your chances of success. Other that adding amps, you really can't do too much that will degrade performance; nearly everything will be an improvement.
I think putting an INTERNAL antenna outside
might not be the best thing. I would rather place an EXTERNAL antenna inside
. That is much easier.
FInd something that is UHF-VHF and fits your budget, and just give it a try, in the attic. Use the guidelines we have given you to make informed decisions regarding how you approach this (the HDTVPrimer stuff will give you a general idea what antennae might be best for your situation, for instance), and be sure you can return an antenna that might turn out to not be as effective as hoped. Or, just spend the dough, get the CM4228, put that in, and expect a good outcome.
I always suggest placing an FM trap in line also, as there are 18 powerful FM stations coming from S. Mt, and while they are not at the same frequency as TV, they can still interfere by swamping the AGC in the tuner. I get signal quality 5 clicks higher with the FM trap, which is an $8 item from RatShack.
Keep us posted as to how things go.