Quote:
Originally Posted by JET4
no amp. new roof was just put on regular shingles.
|
Were you using the attic antenna before the new roof? If you were, was there any change in reception after the new roof?
If the attenuator doesn't help, I suggest you try a preamp that is resistant to overload since the attenuation from the trees and the attic might be more than we thought.
For preamps consider the Channel Master 7778, the Antennas Direct Juice with an FM filter added, or the RCA TVPRAMP1R. The CM and the RCA have internal FM filters. The AD Juice does not have an internal FM filter, but it does have a 4G-LTE filter to reject cell phone transmissions. The RCA is inexpensive, but has a history of quality control problems.
Attic antennas are not required to be grounded, but it would be a good idea to ground the coax shield with a grounding block to reject interference from strong local FM signals.
http://www.fmfool.com/modeling/tmp/6...e/Radar-FM.png