It's time to dump a little rain on this parade:
Originally Posted by LenL
Or you can accept the fact that your reception is very good as it is and you are probably losing some signal because of the long cable run you have.
His reception is NOT very good as it is. Every one of those channels are full-power (except WASA-LD Port Jervis which has been known to be receivable by merely sticking a paper clip into the Antenna In jack) and most of them transmit from ESB. Even worse, full-power WFUT Newark is M.I.A., unless that omission was an oversight. Also missing is WFME-TV West Milford, which is even receivable in NYC's outer boroughs. And neither WNJN Montclair nor WNJB-TV New Brunswick are on the list. The signal strengths of the channels he can receive are respectable, but not thrilling.
The biggest "surprise" fooling some into thinking his reception is all that and a bag of chips is the WKOB-LD New York pickup. But that is likely due to correct positioning and that moderately-sized VHF-Lo element sitting ostracized from it's VHF-Hi and UHF neighbors.
Denny's advertises that this antenna provides "Reliable uninertrupted reception to 50 miles". Considering all known factors, I think the antenna is doing that job. One thing to understand when choosing an antenna: Usage in urban areas will often shorten the manufacturers' predicted range. BTW, the poor spelling was Denny's, not mine.
Originally Posted by LenL
So your actual task may be NOT to move you antenna as some have suggested but to simply add a good powered preamp (channel master 7777 or 7778) to prevent signal loss from the long cable run. I have found it made a dramatic difference for me. With a preamp you might see signals closer to 100% across most of your stations where it is in the 70's and 80's.
Just another suggestion/alternative to consider.
Or a preamp could raise the noise levels on some stations pushing them over the dreaded digital cliff. A long cable run does not necessarily deplete signal strength. In fact, my experience has shown it is better to have too much cable than not enough. A short cable is often subjected to more tensions and that alone could negatively impact reception.
Look again at the list he provided:
Originally Posted by cjvnyc
So, apples to apples, today, mid summer, mid afternoon, sunny:
Channel Strength (Sharp TV metric)
(gap, incl missing 23.1 ...)
42.1 40 (bad) (42.2 - 42.5 seem fine) 42.6 40 (bad)
46.1, 47.1 (TV "detected" them but blank)
63.1-63.3 (same, detected but blank) 63.7 23 (bad)
For most of these with the .1 reported, I scrolled thru the .2-.4 range and they looked fine Lots of alternate language/religion channels. Image and audio fine.
Here shows what the signal must pass thru (antenna to right, note these trees are taller than they look)
I can gain 10+ feet in elevation by using the chimney, but I'd have to get a permit
This list shows excellent reception for a location in Sussex or Hunterdon Counties in New Jersey, not so much for a suburban municipality of Essex County, NJ.
Here's my analysis: Our new friend here on the New York AVS Forum is presently receiving respectable signals transmitted from New York City at his location in Maplewood, NJ. He is utilizing a budget outdoor antenna which is mounted very well to his house, but situated at a level below the apex of the main roofline. The East wall of the house and the roof deck are presenting opportunities for signal refraction. The aluminum gutter and leader are presenting opportunities for signal absorption. The antenna is rated for 50 miles, not full-sized, and is deficient for VHF-Hi reception in urban areas. There are numerous mature trees off-site south and east of his property, at least two of which are evergreens. This foliage directly obstructs the direction from which he expects to receive the majority of available signals. This obstruction will both impede and refract predicted reception.
In my view, the only way to deal with this situation is with absolute aggression. I recommend obtaining a significantly larger outdoor antenna and situating it upon a ten-foot mast attached preferably to a wooden crossmount just below the main roof apex, the chimney or upon the main roof. The antenna should be oriented accordingly. It should be guyed, if necessary, and grounded in the usual fashion. The antenna wire's point-of-entry is fine and reusing the existing cable is also fine provided it is long enough and in good shape without any evidence of fraying or leakage at either end.