How Much Signal Block From Anenna In The Attic

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How much signal block from anenna in the attic.

Attic antenna attic mount loss is at least 3 db for a 3 4 inch plywood roof covered with roofing paper and one layer of 3 tab asphalt shingles. What is the typical signal propagation loss to be expected from a 2 meter 70cm j pole antenna mounted in an attic where the roofing material is the common 5 8 plywood and asphalt shingles compared to the same antenna mounted outside at the same height. The only concern with attic mounted antennas is the space available to you for mounting. The effective range of most antennas is lowered by 10 15 miles with an attic installation so you may consider getting a more powerful antenna than you would typically need with an outdoor antenna.

Is it of the magnitude of reaching only half the distance or is the loss less significant. Improving an attic shortwave antenna a case study. The description he gave of his installation revealed several shortcomings that could easily be remedied. This antenna has all the reception power of an outdoor antenna but features a curved metal frame of reflectors that are designed for fitting easily into smaller attic spaces.

Investing in a low noise pre amplifier can also improve the signal levels. How much loss can be expected. The ge 33692 attic mount hd antenna is a notable example of an antenna specially designed for placement in the attic. The kb9vbr 2 meter j pole antenna is 69 inches tall overall.